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ScienceDaily: Battery News (100 unread)

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New battery system could reduce buildings' electric bills

Posted: May 8th, 2012, 5:28pm CEST

The team of scientists who has been developing innovative low-cost batteries that are safe, non-toxic, and reliable with fast discharge rates and high energy densities, announced that it has built an operating prototype zinc anode battery system. The large-scale commercialization of the battery would start later this year.
Nature's billion-year-old battery key to storing energy

Posted: April 18th, 2012, 8:37pm CEST

New research is bringing us one step closer to clean energy. It is possible to extend the length of time a battery-like enzyme can store energy from seconds to hours, a new study shows.
Power without the cord for small devices

Posted: April 11th, 2012, 2:40pm CEST

Cell phones and flashlights operate by battery without trouble. Yet because of the limited lifespan, battery power is not a feasible option for many applications in the fields of medicine or test engineering, such as implants or probes. Researchers have now developed a process that supplies these systems with power and without the power cord.
Sulfur in every pore: Improved batteries with carbon nanoparticles

Posted: April 10th, 2012, 7:07pm CEST

Lithium-sulfur batteries may be the power storage devices of the future. Newly developed porous nanoparticles containing sulfur deliver optimized battery performance.
Free apps drain smartphone energy on 'advertising modules'

Posted: April 4th, 2012, 8:43pm CEST

Researchers have shown that popular free smartphone apps spend up to 75 percent of their energy tracking the user's geographical location, sending information about the user to advertisers and downloading ads.
Electricity and carbon dioxide used to generate alternative fuel

Posted: March 29th, 2012, 11:16pm CEST

Imagine being able to use electricity to power your car and it's not an electric vehicle. Researchers have for the first time demonstrated a method for converting carbon dioxide into liquid fuel isobutanol using electricity.
Brown liquor and solar cells to provide sustainable electricity

Posted: March 22nd, 2012, 7:21pm CET

A breakthrough for inexpensive electricity from solar cells, and a massive investment in wind power, will mean a need to store energy in an intelligent way. According to new research batteries of biological waste products from pulp mills could provide the solution.
Nanopower: Avoiding electrolyte failure in nanoscale lithum batteries

Posted: March 21st, 2012, 6:20pm CET

It turns out you can be too thin -- especially if you're a nanoscale battery. Researchers have built a series of nanowire batteries to demonstrate that the thickness of the electrolyte layer can dramatically affect the performance of the battery, effectively setting a lower limit to the size of the tiny power sources.
Silicon-carbon electrodes snap, swell, don't pop

Posted: March 14th, 2012, 11:33pm CET

A new study that examines a new type of silicon-carbon nanocomposite electrode reveals details of how they function and how repeated use could wear them down. The study also provides clues to why this material performs better than silicon alone.
Silicon-carbon electrodes snap, swell, don't pop

Posted: March 14th, 2012, 11:33pm CET

A new study that examines a new type of silicon-carbon nanocomposite electrode reveals details of how they function and how repeated use could wear them down. The study also provides clues to why this material performs better than silicon alone.
Origami-inspired paper sensor could test for malaria and HIV for less than 10 cents, report chemists

Posted: March 8th, 2012, 6:00pm CET

Inspired by the paper-folding art of origami, chemists have developed a 3-D paper sensor that may be able to test for diseases such as malaria and HIV for less than 10 cents a pop. The sensors can be printed out on an office printer, and take less than a minute to assemble.
Less is more in piezoelectric energy harvesting: Piezoelectric materials convert electrical energy into strain, or vice versa

Posted: March 2nd, 2012, 4:18pm CET

Piezoelectric materials convert electrical energy into strain, or vice versa. These materials are used to harvest energy from everyday mechanical vibrations -- such as an air conditioning unit rattling, or a footbridge vibrating as pedestrians walk across it.
Alternative fuels expert plans coast-to-coast U.S. trip on 10 gallons of gas or less

Posted: March 1st, 2012, 4:27pm CET

An alternative fuels expert firmly believes he can go coast-to-coast on l0 gallons of gasoline or less. His attempts will be March 3-8, 2012, and in 2013.
Recharge your cell phone with a touch? New nanotechnology converts body heat into power

Posted: February 22nd, 2012, 3:29pm CET

Never get stranded with a dead cell phone again. A promising new technology called Power Felt, a thermoelectric device that converts body heat into an electrical current, soon could create enough juice to make another call simply by touching it.
Stratospheric superbugs offer new source of power

Posted: February 22nd, 2012, 3:26am CET

Bacteria normally found 30 kilometers above Earth have been identified as highly efficient generators of electricity. Bacillus stratosphericus -- a microbe commonly found in high concentrations in the stratosphere -- is a key component of a new 'super' biofilm that has been engineered by a team of scientists from Newcastle University.
Tongue drive system goes inside the mouth to improve performance and user comfort

Posted: February 20th, 2012, 2:56pm CET

The Tongue Drive System is getting less conspicuous and more capable. The newest system prototype allows people with high-level spinal cord injuries to wear an inconspicuous dental retainer embedded with sensors to operate a computer and electric wheelchair simply by moving their tongues.
Researchers develop method to examine batteries -- from the inside

Posted: February 13th, 2012, 1:25am CET

Researchers have developed methodology, based on magnetic resonance imaging (MRI), to examine batteries without destroying them. Their technique creates the possibility of improving battery performance and safety by serving as a diagnostic of its internal workings.
New battery could lead to cheaper, more efficient solar energy

Posted: February 9th, 2012, 7:58pm CET

Scientists have found that a new type of battery has the potential to improve the efficiency and reduce the cost of solar power.
Powering pacemakers with heartbeat vibrations

Posted: February 2nd, 2012, 12:14am CET

Aerospace engineers have developed a prototype device that could power a pacemaker using a source that is surprisingly close to the heart of the matter: vibrations in the chest cavity that are due mainly to heartbeats.
Wireless power could revolutionize highway transportation

Posted: February 1st, 2012, 6:07pm CET

A research team has designed a high-efficiency charging system that uses magnetic fields to wirelessly transmit large electric currents between metal coils placed several feet apart. The long-term goal of the research is to develop an all-electric highway that wirelessly charges cars and trucks as they cruise down the road.
Mystery of car battery's current solved

Posted: December 21st, 2011, 1:33am CET

Chemists have solved the 150 year-old mystery of what gives the lead-acid battery, found under the bonnet of most cars, its unique ability to deliver a surge of current.
Self-healing electronics could work longer and reduce waste

Posted: December 20th, 2011, 7:39pm CET

Engineers have developed a self-healing system that restores electrical conductivity to a cracked circuit in less time than it takes to blink. As a crack propagates, microcapsules filled with liquid metal break open and the liquid fills the gap, restoring electrical flow. The technology is especially attractive for applications where repair is impossible, such as a battery, or finding the source of a failure is difficult, such as an air- or spacecraft.
New method significantly reduces production costs of fuel cells

Posted: December 20th, 2011, 7:37pm CET

Researchers have developed a new and significantly cheaper method of manufacturing fuel cells. A noble metal nanoparticle catalyst for fuel cells is prepared using atomic layer deposition.
The onset of electrical resistance

Posted: December 16th, 2011, 2:42pm CET

Researchers have observed the extremely fast onset of electrical resistance in a semiconductor by following electron motions in real-time.
Building a sustainable hydrogen economy

Posted: December 8th, 2011, 6:10pm CET

The concept of the hydrogen economy (HE), in which hydrogen would replace the carbon-based fossil fuels of the twentieth century was first mooted in the 1970s. Today, HE is seen as a potential solution to the dual global crises of climate change and dwindling oil reserves. A research article suggests that HE is wrong and SHE has the answer in the sustainable hydrogen economy.
Efficiency metrics for energy storage devices need standardization

Posted: November 30th, 2011, 12:59am CET

Solving the mystery of prematurely dead cell phone and laptop batteries may prove to be a vital step toward creating a sustainable energy grid according to researchers. Scientists now call for a new, standardized gauge of performance measurement for energy storage devices.
Nanoparticle electrode for batteries could make grid-scale power storage feasible

Posted: November 23rd, 2011, 9:19pm CET

Researchers have used nanoparticles of a copper compound to develop a high-power battery electrode that is so inexpensive to make, so efficient and so durable that it could be used to build batteries big enough for economical large-scale energy storage on the electrical grid -- something researchers have sought for years.
Insect cyborgs may become first responders: Search and monitor hazardous places

Posted: November 23rd, 2011, 7:35pm CET

New developments may lead to insects monitoring hazardous situations before humans are sent in. The principal idea is to harvest the insect's biological energy from either its body heat or movements. The device converts the kinetic energy from wing movements of the insect into electricity, thus prolonging the battery life. The battery can be used to power small sensors implanted on the insect (such as a small camera, a microphone or a gas sensor) in order to gather vital information from hazardous environments.
Better batteries: New technology improves both energy capacity and charge rate in rechargeable batteries

Posted: November 14th, 2011, 8:20pm CET

Engineers have created an electrode for lithium-ion batteries that allows the rechargeable batteries to hold a charge up to 10 times greater than current technology. The batteries also can charge 10 times faster than current batteries. The researchers combined two chemical engineering approaches to address two major battery limitations -- energy capacity and charge rate -- in one fell swoop. The technology could pave the way for better batteries for cellphones, iPods and electric cars.
Fluoride shuttle increases storage capacity: Researchers develop new concept for rechargeable batteries

Posted: October 21st, 2011, 6:55pm CEST

Researchers have developed a new concept for rechargeable batteries. Based on a fluoride shuttle -- the transfer of fluoride anions between the electrodes -- it promises to enhance the storage capacity reached by lithium-ion batteries by several factors. Operational safety is also increased, as it can be done without lithium.
Electrically powered maneuverable public transportation with high capacity

Posted: October 17th, 2011, 6:43pm CEST

Electric and hybrid vehicles will be conquering the cities: cars, bicycles, buses and trains. This is why new ideas are in demand for individual and public transportation.
Lithium-ion batteries made faster with new process

Posted: October 17th, 2011, 4:26pm CEST

Engineers have been inspired by nature. To fill the porous electrodes of lithium-ion batteries more rapidly with liquid electrolyte, they are using a physico-chemical effect that also provides for transport in trees. The new process increases the throughput of battery production and reduces investment costs.
Redox flow batteries, a promising technology for renewable energies integration

Posted: October 14th, 2011, 2:00pm CEST

Today there is a wide variety of energy storage technologies at very different stages of development. Among them, the Redox Flow Battery (RFB) is an innovative solution based on the use of liquid electrolytes stored in tanks and pumped through a reactor to produce energy. Researchers are currently working in the development of high performance RFBs.
Researchers invent tiny artificial muscles with the strength, flexibility of elephant trunk

Posted: October 14th, 2011, 12:50am CEST

An international team of researchers has invented new artificial muscles strong enough to rotate objects a thousand times their own weight, but with the same flexibility of an elephant's trunk or octopus limbs.
Crash-safe battery protection for electric cars

Posted: October 5th, 2011, 5:04pm CEST

Engineers in Germany have replaced a battery box for lithium-ion batteries in electric cars with a lightweight component. Not only does the housing save weight and sustain no damage in an accident -- for the first time ever, it can also be mass-produced.
World's first energy-storage membrane devised

Posted: September 29th, 2011, 1:40pm CEST

Researchers in Singapore have developed a novel membrane with a performance that surpasses existing rechargeable batteries and supercapacitors, promising a low-cost, environmentally-friendly energy source.
Better lithium-ion batteries are on the way

Posted: September 23rd, 2011, 4:55pm CEST

Lithium-ion batteries power everything from smart phones to electric cars, but especially when it comes to lowering the cost and extending the range of all-electric vehicles, they need to store a lot more energy. The critical component for energy storage is the anode, and scientists have developed a new anode material that can absorb eight times the lithium and has far greater energy capacity than today's designs.
Reducing costs of electric vehicle batteries

Posted: September 9th, 2011, 5:16pm CEST

Costs of manufacture of batteries and power trains of electric vehicles can be halved by 2018, if the gaps in the innovation chain can be closed. For reaching this objective, scientists develop concrete, close-to-industry solutions for energy stores and power trains and combine them on the system level.
New material possible boon for lithium ion batteries

Posted: September 8th, 2011, 8:53pm CEST

Batteries could get a boost from a discovery that increases power, energy density and safety while dramatically reducing charge time.
Powered by seaweed: Polymer from algae may improve battery performance

Posted: September 8th, 2011, 8:51pm CEST

By looking to Mother Nature for solutions, researchers have identified a promising new binder material for lithium-ion battery electrodes that could not only boost energy storage, but also eliminate the use of toxic compounds now used in manufacturing the components. Known as alginate, the material is extracted from common, fast-growing brown algae.
Solar industry responsible for lead emissions in developing countries, research finds

Posted: August 31st, 2011, 5:59pm CEST

Solar power heavily reliant on lead batteries has the potential to release more than 2.4 million tons of lead pollution in China and India, according to new research.
Hydrogen powered prototype vessel for inland waterways: Canal boat runs on fuel cell drive

Posted: August 31st, 2011, 3:39pm CEST

Researchers have been operating a canal boat with a fuel cell drive for three years now. In the world of shipbuilding, however, different rules apply than those in the automobile manufacturing industries. Weight is of practically no significance, but the propulsion plant must have an operating lifetime as long as that of the boat itself. The hydride storage system -- the hydrogen tank -- must meet this challenging requirement.
Human gait could soon power portable electronics

Posted: August 23rd, 2011, 5:51pm CEST

In a new paper, researchers describe a new energy-harvesting technology that promises to dramatically reduce our dependence on batteries and instead capture the energy of human motion to power portable electronics.
Nano bundles pack a powerful punch: Solid-state energy storage takes a leap forward

Posted: August 22nd, 2011, 9:25pm CEST

Researchers have created a solid-state, nanotube-based supercapacitor that promises to combine the best qualities of high-energy batteries and fast-charging capacitors in a device suitable for extreme environments.
Working towards replacing platinum in fuel cells: Performance of iron-based catalysts improved

Posted: August 10th, 2011, 7:31pm CEST

Researchers have developed a new and improved iron-based catalyst capable of generating even more electric power in fuel cells for transportation applications. Previously, only platinum-based catalysts could produce similar performance.
Hybrid solar system makes rooftop hydrogen

Posted: August 9th, 2011, 7:22pm CEST

While roofs across the world sport photovoltaic solar panels to convert sunlight into electricity, an engineer believes a novel hybrid system can wring even more useful energy out of the sun's rays. Instead of systems based on standard solar panels, an engineer proposes a hybrid option in which sunlight heats a combination of water and methanol in a maze of glass tubes on a rooftop. After two catalytic reactions, the system produces hydrogen much more efficiently than current technology without significant impurities. The resulting hydrogen can be stored and used on demand in fuel cells.
Sun-free photovoltaics: Materials engineered to give off precisely tuned wavelengths of light when heated

Posted: July 31st, 2011, 12:02am CEST

A new photovoltaic energy-conversion system can be powered solely by heat, generating electricity with no sunlight at all. While the principle involved is not new, a novel way of engineering the surface of a material to convert heat into precisely tuned wavelengths of light -- selected to match the wavelengths that photovoltaic cells can best convert to electricity -- makes the new system much more efficient than previous versions.
Scientists build battery in a nanowire: Hybrid energy storage device is as small as it can possibly get

Posted: July 29th, 2011, 11:56pm CEST

Scientists have packed an entire lithium ion energy storage device into a single nanowire. The researchers believe their creation is as small as such devices can possibly get, and could be valuable as a rechargeable power source for new generations of nanoelectronics.
Graphene nanocomposite a bridge to better batteries

Posted: July 27th, 2011, 11:15pm CEST

Researchers have built a high-capacity energy storage device for lithium ion batteries by constructing a unique nanoscale sandwich of graphene and tin. The device is engineered to improve electrochemical cycling of the battery, which reduces charging time and allows repeated recharging without degrading battery performance.
Ohio Supercomputer Center lifts land speed racer toward 400-mph goal

Posted: July 21st, 2011, 9:04pm CEST

A team of engineering students at the Ohio State University's Center for Automotive Research recently began running aerodynamics simulations at the Ohio Supercomputer Center, one of the first steps in the long and careful process of researching, designing, building and racing the fourth iteration of their record-breaking, alternative-fuel streamliner. In partnership with Venturi and A123 Systems, the team began the development process for a completely re-engineered test vehicle designed to break the 400-mph mark.
New way to store sun's heat

Posted: July 13th, 2011, 6:13pm CEST

A novel application of carbon nanotubes shows promise as an innovative approach to storing solar energy for use whenever it's needed. Storing the sun's heat in chemical form -- rather than converting it to electricity or storing the heat itself in a heavily insulated container -- has significant advantages, since in principle the chemical material can be stored for long periods of time without losing any of its stored energy. The problem with that approach has been that until now the chemicals needed to perform this conversion and storage either degraded within a few cycles, or included the element ruthenium, which is rare and expensive.
New electric concept car has excellent driving dynamics

Posted: July 13th, 2011, 4:19pm CEST

Following months of preliminary work on computer simulations, the first completed prototype of the new electric concept car showed in its first driving tests that it possesses excellent driving properties -- not only in theory, but also in practice.
Wireless power could cut cord for patients with implanted heart pumps

Posted: July 12th, 2011, 10:28pm CEST

A new system to send electricity over short distances has been shown to reliably power a mechanical heart pump. The system could free patients from being tethered to a battery or external power source, lowering their chance of infection and improving their quality of life.
Power from the air: Device captures ambient electromagnetic energy to drive small electronic devices

Posted: July 7th, 2011, 7:15pm CEST

Researchers have discovered a way to capture energy transmitted by such sources as radio and television transmitters and cell phone networks. By scavenging this ambient energy from the air around us, the technique could provide a new way to power networks of wireless sensors or other devices.
WiFi 'napping' doubles phone battery life

Posted: June 30th, 2011, 11:17pm CEST

A graduate student has found a way to double the battery life of mobile devices -- such as smartphones or laptop computers -- by making changes to WiFi technology.
New insights on an old material will enable design of better polymer batteries, water purification

Posted: June 19th, 2011, 7:35pm CEST

Scientists have devised a way to measure Nafion's internal structure and, in the process, have discovered how to manipulate this structure to enhance the material's applications.
Firefighters' communications: Wireless 'breadcrumbs' that won’t become toast when baked ... or soggy when hosed

Posted: June 17th, 2011, 1:39am CEST

When Hansel and Gretel ventured into the forest, they left a trail of breadcrumbs to find their way home. In today's world, digital signals connect us to friends, family, and colleagues and help us find our location and map our routes. Yet, with few exceptions, today's firefighters still rely on 20th century radios, whose outdated analog signals have trouble penetrating the modern forest.
First self-powered device with wireless data transmission

Posted: June 15th, 2011, 4:30pm CEST

Scientists are reporting development of the first self-powered nano-device that can transmit data wirelessly over long distances. Researchers say it proves the feasibility of a futuristic genre of tiny implantable medical sensors, airborne and stationary surveillance cameras and sensors, wearable personal electronics, and other devices that operate independently without batteries on energy collected from the environment.
New catalyst will allow commercialization of revolutionary fuel cells

Posted: June 15th, 2011, 12:22pm CEST

Cheap, much lighter than before and allowing for continuous operation – what traditional batteries can not offer – direct formic acid fuel cells can revolutionize the portable electronics market. A new catalyst will enable a widespread use of fuel cells, researchers say.
New method to make sodium ion-based battery cells could lead to better, cheaper batteries for the electrical grid

Posted: June 7th, 2011, 6:11pm CEST

By adding the right amount of heat, researchers have developed a method that improves the electrical capacity and recharging lifetime of sodium ion rechargeable batteries, which could be a cheaper alternative for large-scale uses such as storing energy on the electrical grid. Researchers have used nanomaterials to make electrodes that can work with sodium.
Clean energy technology: Direct methanol fuel cell system moves forward

Posted: May 31st, 2011, 10:07pm CEST

A team of scientists has developed a Direct Methanol Fuel Cell technology for future U.S. Department of Defense and commercial applications.
Stamping out low cost nanodevices

Posted: May 31st, 2011, 9:53pm CEST

A team of engineers has developed a rapid and low-cost imprinting process that can stamp out a variety of devices that have unique optical, electrical, chemical and mechanical properties.
Portable hydrogen reactor for fuel cells

Posted: May 23rd, 2011, 4:19pm CEST

Chemical engineering students have developed a portable microreactor that converts liquid fuels into hydrogen for fuel cell batteries.
What electric car convenience is worth

Posted: May 18th, 2011, 7:14pm CEST

A U.S. nationwide survey asked consumers what changes to the common complaints of charging time and limited range are worth. For longer range, they'd pay $35-$75/mile. For faster charging, they'd pay up to $3,250/hour. A second study showed longer range isn't absolutely necessary for many. The current 100-mile range could work for 32 percent of people.
Forklift trucks that run on a green charge

Posted: May 9th, 2011, 12:56pm CEST

The first forklift trucks in Europe that will run on fuel cells and with hydrogen in their tanks are on the way to the market. No fewer than 30 demonstration units are to be tested, and Norway is among the countries potentially involved in the trials.
Better glasses-free 3-D: Mew approach to make 3-D illusions more realistic

Posted: May 5th, 2011, 7:16pm CEST

Researchers have developed a fundamentally new approach to glasses-free 3-D, called HR3D, which they say could double the battery life of devices without compromising screen brightness or resolution. Among other advantages, the technique could also expand the viewing angle of a 3-D screen, making it practical for larger devices with multiple users, and it would maintain the 3-D effect even when the screen is rotated -- something that happens routinely with handheld devices.
Scientists focus on light ions for fast ignition of fusion fuels

Posted: April 26th, 2011, 3:11pm CEST

Scientists have demonstrated significant progress in the efficiency and cost effectiveness of light ions in the fast ignition of fusion targets. Light ions such as lithium or carbon are easier to produce technologically and the ion beam properties can be manipulated and tailored best to suit the necessary requirements for fast ignition.
Choosing the right electric vehicles batteries for the future

Posted: April 22nd, 2011, 3:02pm CEST

One of the most important decisions facing designers of plug-in electric or hybrid vehicles is related to battery choice. Now, researchers have used a life cycle analysis to examine three vehicle battery types to determine which does the best job of powering the vehicle while causing the least amount of environmental impact during its production.
Electric cars need night time charging, evidence suggests

Posted: April 19th, 2011, 2:17am CEST

Researchers in America have shown that ozone -- a known pollutant at low levels in Earth's atmosphere, causing harmful effects on the respiratory system and sensitive plants -- can be reduced, on average, when electric vehicle charging is done at night time.
Novel ionic liquid batteries

Posted: April 15th, 2011, 5:39pm CEST

Limits imposed by using corrosive electrolytes often result in severe restrictions to battery geometry and the need for special corrosive-resistant battery containers. The use of reactive ionic liquids in non-aqueous cells replace the more hazardous highly alkaline electrolytes.
Solar power without solar cells: A hidden magnetic effect of light could make it possible

Posted: April 14th, 2011, 10:14pm CEST

A dramatic and surprising magnetic effect of light discovered by researchers could lead to solar power without traditional semiconductor-based solar cells. The researchers found a way to make an "optical battery." In the process, they overturned a century-old tenet of physics.
Battery-less chemical detector developed

Posted: April 6th, 2011, 8:23pm CEST

Unlike many conventional chemical detectors that require an external power source, researchers have now developed a nanosensor that relies on semiconductor nanowires, rather than traditional batteries.
Replacing batteries may become a thing of the past, thanks to 'soft generators'

Posted: April 6th, 2011, 6:30pm CEST

Battery technology hasn't kept pace with advancements in portable electronics, but the race is on to fix this. One revolutionary concept being pursued involves creating "wearable energy harvesters" capable of converting movement from humans or found in nature into battery power.
Research into batteries will give electric cars the same range as gas cars, experts say

Posted: April 6th, 2011, 2:56pm CEST

Li-air batteries are a promising opportunity for electric cars. The Achilles' heel of the electric car is the limited energy density of the batteries, which will only provide short drives.
Giant batteries for green power

Posted: April 4th, 2011, 2:47pm CEST

In the future, the growing amounts of solar and wind energy will need to be stored for dark or low-wind periods. One solution is redox flow batteries that can supply current for up to 2000 households. Scientists are now working on these fluid batteries of the future.
Mobile with electricity

Posted: April 4th, 2011, 2:44pm CEST

Electric cars are cleaner, quieter and more efficient than gasoline- or diesel-powered vehicles. Even so, they have not yet caught on. Now, however, a new era is beginning: the era of electric mobility.
Fast-recharge, lithium-ion battery could be perfect for electric cars

Posted: March 31st, 2011, 3:47am CEST

The next-generation battery, like next-generation TV, may be 3-D, scientists say. They have described a new lithium-ion battery, already available in a prototype version, with a three-dimensional interior architecture that could be perfect for the electric cars now appearing in auto dealer showrooms.
River water and salty ocean water used to generate electricity

Posted: March 29th, 2011, 7:42pm CEST

Researchers have developed a rechargeable battery that uses freshwater and seawater to create electricity. Aided by nanotechnology, the battery employs the difference in salinity between fresh and saltwater to generate a current. A power station might be built wherever a river flows into the ocean.
Huge potential of nanocrystals to raise efficiency in fuel cells

Posted: March 28th, 2011, 3:30pm CEST

The addition of extremely small crystals to solid electrolyte material has the potential to considerably raise the efficiency of fuel cells.
Batteries charge quickly and retain capacity, thanks to new structure

Posted: March 20th, 2011, 9:42pm CET

Scientists have developed a three-dimensional nanostructure for battery cathodes that allows for dramatically faster charging and discharging without sacrificing energy storage capacity. Such batteries could be useful for quick-charge consumer electronics, electric vehicles, medical devices, lasers and military applications.
Electric grid reliability: Increasing energy storage in vanadium redox batteries by 70 percent

Posted: March 17th, 2011, 7:14pm CET

Researchers have discovered that the vanadium redox battery's performance can be significantly improved by modifying its electrolyte solution. The finding could improve the electric grid's reliability and help connect more wind turbines and solar panels to the grid.
Solar power systems could lighten the load for British soldiers

Posted: March 14th, 2011, 4:12pm CET

A revolutionary type of personal power pack now in development could help troops when they are engaged on the battlefield. With the aim of being up to 50 percent lighter than conventional chemical battery packs used by British infantry, the solar and thermoelectric-powered system could make an important contribution to future military operations.
Better batteries for electric cars

Posted: March 14th, 2011, 2:20pm CET

The breakthrough with electric cars is a long time coming -- not least on account of their key component, the battery. Lithium-ion batteries are still too expensive and their range too limited. New materials should pave the way for better batteries. Simulation software from researchers is helping speed up the development process.
Testing smart energy systems

Posted: March 14th, 2011, 2:19pm CET

The residential housing sector needs smart energy systems. And yet the potential for developing these kinds of systems remains largely untapped. Researchers are able to analyze, assess and develop almost any energy management system for controlling power and heat at a new lab.
New technology would dramatically extend battery life for mobile devices

Posted: March 10th, 2011, 8:14pm CET

Technophiles who have been dreaming of mobile devices that run longer on lighter, slimmer batteries may soon find their wish has been granted. Engineers have developed a form of ultra-low-power digital memory that is faster and uses 100 times less energy than similar available memory. The technology could give future portable devices much longer battery life between charges. The researchers use carbon nanotubes as electrodes and tiny amounts of phase-change material as the bit.
Affordability of batteries key to harnessing wind and solar power

Posted: March 7th, 2011, 3:30pm CET

Researchers say future batteries used by the energy grid to store power from the wind and the sun must be reliable, durable and safe, but affordability is key to widespread market deployment of these technologies.
New high-performance lithium-ion battery 'top candidate' for electric cars

Posted: February 23rd, 2011, 6:24pm CET

Scientists are reporting development of an advanced lithium-ion battery that is ideal for powering the electric vehicles now making their way into dealer showrooms. The new battery can store large amounts of energy in a small space and has a high rate capacity, meaning it can provide current even in extreme temperatures.
Toward computers that fit on a pen tip: New technologies usher in the millimeter-scale computing era

Posted: February 22nd, 2011, 6:19pm CET

A prototype implantable eye pressure monitor for glaucoma patients is believed to contain the first complete millimeter-scale computing system.
Alternative energy use at forward operating bases can save dollars, lives, say US military researchers

Posted: January 26th, 2011, 8:45pm CET

To cut down on convoys trucking fuel to forward operating bases, as well as implement the Department of the Navy's vision for energy efficiency, the Office of Naval Research and elements within the Marine Corps have successfully demonstrated their goal to reduce petroleum and energy usage in remote locations in Afghanistan.
How do you make lithium melt in the cold?

Posted: January 10th, 2011, 6:17pm CET

Sophisticated tools allow scientists to subject the basic elements of matter to conditions drastic enough to modify their behavior. By doing this, they can expand our understanding of matter. A research team was able to demonstrate surprising properties of the element lithium under intense pressure and low temperatures.
Spinning the unspinnable: Superconducting, energy storing and catalytic yarns based on ancient types of spirals

Posted: January 6th, 2011, 8:45pm CET

Researchers found that by twisting nanotube sheets into various spirals, they absorb greater concentrations of embedded materials, while preserving the flexibility and strength of nanotube fibers.
'Nanoscoops' could spark new generation of electric automobile batteries

Posted: January 4th, 2011, 4:13pm CET

An entirely new type of nanomaterial could enable the next generation of high-power rechargeable lithium-ion batteries for electric automobiles, as well as batteries for laptop computers, mobile phones, and other portable devices. The new material, dubbed a "nanoscoop" because its shape resembles a cone with a scoop of ice cream on top, can withstand extremely high rates of charge and discharge that would cause conventional electrodes used in today's Li-ion batteries to rapidly deteriorate and fail.
Nanotechnology: Tiny channels carry big information

Posted: December 14th, 2010, 8:27pm CET

Researchers have been able to fabricate nanochannels that are only two nanometers in size, using standard semiconductor manufacturing processes. Already they've discovered that fluid mechanics for passages this small are significantly different not only from bulk-sized channels, but even from channels that are merely 10 nanometers in size.
World's smallest battery: Real-time observation of nanowire anode to help improve lithium batteries

Posted: December 9th, 2010, 9:27pm CET

A benchtop version of the world's smallest battery -- its anode a single nanowire one seven-thousandth the thickness of a human hair -- has been created by a team of researchers.
Contorting batteries: Charging makes nano-sized electrodes swell, elongate and spiral

Posted: December 9th, 2010, 8:11pm CET

New high-resolution images of electrode wires made from materials used in rechargeable lithium ion batteries shows them contorting as they become charged with electricity. The thin, nano-sized wires writhe and fatten as lithium ions flow in during charging. The work suggests how rechargeable batteries eventually give out and might offer insights for building better batteries.
Microbatteries with nanowire hearts

Posted: December 9th, 2010, 5:35pm CET

Researchers have moved a step closer to creating robust, three-dimensional microbatteries that would charge faster and hold other advantages over conventional lithium-ion batteries. They could power new generations of remote sensors, display screens, smart cards, flexible electronics and biomedical devices.
Social networking extends mobile battery life

Posted: November 17th, 2010, 5:30pm CET

A new approach to social networking for mobile devices, such as tablet PCs and smart phones could improve the user experience and boost battery life by up to 70% by exploiting shared data between users in the same location.
Scarcity of new energy minerals may trigger trade wars, expert suggests

Posted: November 1st, 2010, 1:31pm CET

It's not hard to argue in favor of alternatives to fossil fuels these days, but one popular argument -- domestic energy security -- may be standing on very shaky legs. A lot of rare metals are needed to make photovoltaic panels, rare earth magnets for wind generators, fuel cells and high-capacity batteries for hybrid and electric vehicles. But most industrialized nations, including the United States, are almost entirely dependent on foreign sources for those metals. The only way this is going to change is if there is more domestic exploration and mining, a leading expert says.
Stable way to store the sun's heat: Storing thermal energy in chemical could lead to advances in storage and portability

Posted: October 25th, 2010, 10:12pm CEST

Researchers have revealed exactly how a molecule called fulvalene diruthenium, which was discovered in 1996, works to store and release heat on demand. This understanding should make it possible to find similar chemicals based on more abundant, less expensive materials than ruthenium, and this could form the basis of a rechargeable battery to store heat rather than electricity.
How batteries grow old: Researchers build facility to put hybrid car batteries to the test

Posted: October 20th, 2010, 3:29am CEST

In a laboratory in Ohio, an ongoing experiment is looking at why batteries lose their ability to hold a charge as they age -- specifically lithium-ion batteries, which have generated a lot of buzz for their potential to power the electric cars of the future.

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