Latest Technology News


'Holy grail' of battery design achieved: Stable lithium anode

Sun, 27 Jul 2014 16:57:08 EDT

Researchers report that they have taken a big step toward accomplishing what battery designers have been trying to do for decades -- design a pure lithium anode. All batteries have three basic components: an electrolyte to provide electrons, an anode to discharge those electrons, and a cathode to receive them. The nanosphere layer of a newly created battery design resembles a honeycomb: it creates a flexible, uniform and non-reactive film that protects the unstable lithium from the drawbacks that have made it such a challenge.<img src="" height="1" width="1"/>
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Cost-effective, solvothermal synthesis of heteroatom (S or N)-doped graphene developed

Thu, 24 Jul 2014 10:42:24 EDT

A research team has developed cost-effective technology to synthesize sulfur-doped and nitrogen-doped graphenes which can be applied as high performance electrodes for secondary batteries and fuel cells.<img src="" height="1" width="1"/>
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Nano-supercapacitors for electric cars

Thu, 24 Jul 2014 09:40:19 EDT

Innovative nano-material based supercapacitors are set to bring mass market appeal a good step closer to the lukewarm public interest in Germany. This movement is currently being motivated by the advancements in the state-of-the-art of this device.<img src="" height="1" width="1"/>
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Labs characterize carbon for lithion-ion batteries

Mon, 14 Jul 2014 18:24:10 EDT

Researchers have found a universal descriptor of charge-transfer binding properties for carbon-based lithium-ion batteries. The model is based on intrinsic electronic characteristics of materials used as battery anodes. These include the material's quantum capacitance (the ability of the material to absorb charge) and the material's absolute Fermi level, which determines how many lithium ions may bond to the electrodes.<img src="" height="1" width="1"/>
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Nano-sized silicon oxide electrode for the next generation lithium ion batteries

Mon, 14 Jul 2014 10:57:42 EDT

A new article reports on an approach with industrial potential to produce nano-sized composite silicon-based powders as negative electrodes for the next generation lithium ion batteries.<img src="" height="1" width="1"/>
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Using sand to improve battery performance

Tue, 08 Jul 2014 15:39:06 EDT

Researchers have created a lithium ion battery that outperforms the current industry standard by three times. The key material: sand. Yes, sand. Researchers are now focused on using silicon at the nanoscale, or billionths of a meter, level as a replacement for graphite.<img src="" height="1" width="1"/>
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Silicon sponge improves lithium-ion battery performance

Tue, 08 Jul 2014 09:29:20 EDT

A sponge-like silicon material could help lithium-ion batteries run longer on a single charge by giving the batteries' electrodes the space they need to expand without breaking.<img src="" height="1" width="1"/>
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Bolstering batteries with nanotubes

Tue, 01 Jul 2014 14:29:33 EDT

Researchers are turning to extremely tiny tubes and rods to boost power and durability in lithium-ion batteries, the energy sources for cell phones, laptops, and electric vehicles. If successful, the batteries will last longer and perform better, leading to a cost advantage for electric vehicles.<img src="" height="1" width="1"/>
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Energy storage technology: More pores for more power

Mon, 30 Jun 2014 12:43:35 EDT

When can we expect to drive the length of Germany in an electric car without having to top up the battery? Chemists have now synthesized a new material that could show the way forward to state-of-the-art lithium-sulfur batteries.<img src="" height="1" width="1"/>
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Scientists create new battery that's cheap, clean, rechargeable ... and organic

Wed, 25 Jun 2014 13:26:27 EDT

Scientists have developed a rechargeable battery that is all organic and could be scaled up easily for use in power plants where it can make the energy grid more resilient and efficient by creating a large-scale means to store energy for use as needed. The batteries could pave the way for renewable energy sources to make up a greater share of the nation's energy generation.<img src="" height="1" width="1"/>
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Fuel cells developed for increased airplane efficiency

Mon, 16 Jun 2014 14:15:43 EDT

Researchers have developed the first fuel cell that can directly convert fuels, such as jet fuel or gasoline, to electricity, providing a dramatically more energy-efficient way to create electric power for planes or cars.<img src="" height="1" width="1"/>
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Lighter cars with new robotic welding method

Wed, 11 Jun 2014 09:34:49 EDT

A vehicle typically consists of several thousands of spot joints such as rivets, clinch joints or spot welds. They are used to bond together different parts of the vehicle. But the rivets are costly and do not have great strength. Moreover, spot joints require a certain sheet thickness to provide sufficient strength. Researchers in Sweden have now invented a welding tool that also functions as a temperature sensor.<img src="" height="1" width="1"/>
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Charging portable electronics in 10 minutes: New architecture for lithium-ion battery anodes far outperform the current standard

Tue, 10 Jun 2014 14:47:54 EDT

Researchers have developed a three-dimensional, silicon-decorated, cone-shaped carbon-nanotube cluster architecture for lithium ion battery anodes that could enable charging of portable electronics in 10 minutes, instead of hours.<img src="" height="1" width="1"/>
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Designing ion 'highway systems' for batteries

Mon, 09 Jun 2014 14:09:03 EDT

Researchers have married two traditional theories that advance the understanding of plastics for battery application. Since the early 1970s, lithium has been the most popular element for batteries: it's the lightest of all metals and has the greatest electrochemical potential. But a lithium-based battery has a major disadvantage: it's highly flammable, and when it overheats, it can burst into flames. For years, scientists have searched for safer battery materials that still have the same advantages as lithium.<img src="" height="1" width="1"/>
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Seeing how a lithium-ion battery works

Mon, 09 Jun 2014 11:34:00 EDT

The inner workings of a type of electrode widely used in lithium-ion batteries has been revealed through new observations by researchers. The new findings explain the unexpectedly high power and long cycle life of such batteries, the researchers say.<img src="" height="1" width="1"/>
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Battery design could reduce electric car weight

Wed, 04 Jun 2014 09:35:33 EDT

Battery weight has long vexed engineers designing electric cars for the mass market. Bigger batteries are needed to power a car for longer distances, but their weight in turn requires the car to expend more energy. But what if the body of the car itself was a battery?<img src="" height="1" width="1"/>
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Controlling thermal conductivities can improve energy storage

Tue, 03 Jun 2014 09:25:25 EDT

The thermal conductivity of lithium cobalt oxide, an important material for electrochemical energy storage, can be reversibly electrochemically modulated over a considerable range, researchers have experimentally shown for the first time. Controlling the flow of heat through materials is important for many technologies. While materials with high and low thermal conductivities are available, materials with variable and reversible thermal conductivities are rare.<img src="" height="1" width="1"/>
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Enhancing safety of domestic solar power storage

Tue, 03 Jun 2014 09:22:06 EDT

Lithium-ion battery-based energy storage systems have already demonstrated efficiency and reliability in commercial electric vehicles. These high standards now also have to be transferred to battery-based storage systems for private photovoltaics facilities.<img src="" height="1" width="1"/>
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Scientists Pinpoint the Creeping Nanocrystals Behind Lithium-Ion Battery Degradation

Thu, 29 May 2014 11:12:44 EDT

Batteries do not age gracefully. The lithium ions that power portable electronics cause lingering structural damage with each cycle of charge and discharge, making devices from smartphones to tablets tick toward zero faster and faster over time. To stop or slow this steady degradation, scientists must track and tweak the imperfect chemistry of lithium-ion batteries with nanoscale precision. Scientists have mapped the nanoscale dynamics of lithium-ion charge cycles and discovered never-before-seen evolution and degradation patterns in two key battery materials.<img src="" height="1" width="1"/>
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Diesel bus alternative: Electric school buses that power grid could save school districts millions

Thu, 29 May 2014 09:22:53 EDT

Electric school buses that feed the power grid could save school districts millions of dollars — and reduce children’s exposure to diesel fumes — based on recent research. A new study examines the cost-effectiveness of electric school buses that discharge their batteries into the electrical grid when not in use and get paid for the service. The technology, called vehicle-to-grid (V2G), was pioneered at UD and is being tested with electric cars in a pilot project.<img src="" height="1" width="1"/>
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A new way to harness waste heat: Electrochemical approach has potential to efficiently turn low-grade heat to electricity

Wed, 21 May 2014 13:36:11 EDT

Vast amounts of excess heat are generated by industrial processes and by electric power plants; researchers around the world have spent decades seeking ways to harness some of this wasted energy. Now researchers have found a new alternative for low-temperature waste-heat conversion into electricity.<img src="" height="1" width="1"/>
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New lithium battery created

Tue, 20 May 2014 11:55:12 EDT

A team of researchers has created a new type of lithium ion conductor for future batteries that could be the basis for a whole new generation of solid-state batteries. It uses rock salt Lithium Borohydride (LiBH4), a well-known agent in organic chemistry laboratories that has been considered for batteries before, but up to now has only worked at high temperatures or pressures.<img src="" height="1" width="1"/>
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Electric vehicles: Mix of quick and conventional charging protects the battery

Tue, 20 May 2014 09:34:48 EDT

Interference-free charging is a major prerequisite for the economically efficient use of electric vehicles. After about 120,000 km driven electrically, a new project has demonstrated that a combination of quick and conventional charging is ideal for the battery performance: The controlled mix ensures a high utilization rate of the vehicles and protects the battery.<img src="" height="1" width="1"/>
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Improved supercapacitors for super batteries, electric vehicles

Mon, 19 May 2014 12:25:59 EDT

Researchers have developed a novel nanometer scale ruthenium oxide anchored nanocarbon graphene foam architecture that improves the performance of supercapacitors, a development that could mean faster acceleration in electric vehicles and longer battery life in portable electronics.<img src="" height="1" width="1"/>
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Liberating devices from their power cords

Mon, 19 May 2014 12:25:25 EDT

A new type of supercapacitor that can hold a charge when it takes a lickin’ has been developed. It is the first “multi-functional” energy storage device that can operate while subject to realistic static and dynamic loads – advancing the day when everything from cell phones to electric vehicles will no longer need separate batteries.<img src="" height="1" width="1"/>
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Hybrid electric vehicles: Logged driving route can reduce energy consumption by 10 percent

Mon, 19 May 2014 09:04:03 EDT

For long distance driving, plug-in hybrid electric vehicles use the internal combustion engine more than necessary. A new method has now been developed to make the car remember the commuter routes and thereby make optimal use of the battery. The strategy can reduce fuel consumption by up to 10 percent compared to conventional methods.<img src="" height="1" width="1"/>
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Silly Putty material inspires better batteries: Silicon dioxide used to make lithium-ion batteries that last three times longer

Thu, 15 May 2014 14:28:39 EDT

Using a material found in Silly Putty and surgical tubing, a group of researchers have developed a new way to make lithium-ion batteries that will last three times longer between charges compared to the current industry standard.<img src="" height="1" width="1"/>
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In the wake of high-profile battery fires, a safer approach emerges

Wed, 14 May 2014 11:17:50 EDT

As news reports of lithium-ion battery fires in Boeing Dreamliner planes and Tesla electric cars remind us, these batteries -- which are in everyday portable devices, like tablets and smartphones -- have their downsides. Now, scientists have designed a safer kind of lithium battery component that is far less likely to catch fire and still promises effective performance.<img src="" height="1" width="1"/>
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Flexible supercapacitor raises bar for volumetric energy density; Could be woven into clothes to power devices

Sun, 11 May 2014 16:55:11 EDT

Scientists have taken a large step toward making a fiber-like energy storage device that can be woven into clothing and power wearable medical monitors, communications equipment or other small electronics. Their supercapacitor packs an interconnected network of graphene and carbon nanotubes so tightly that it stores energy comparable to some thin-film lithium batteries.<img src="" height="1" width="1"/>
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New microscope sees what others can't

Thu, 08 May 2014 12:14:59 EDT

Microscopes don't exactly lie, but they have limitations. Scanning electron microscopes can't see electrical insulators, and their high energies can actually damage some types of samples. Researchers have now built the first low-energy focused ion beam (FIB) microscope using lithium. The team's new approach opens up the possibility of creating a whole category of FIBs using any one of up to 20 different elements, greatly increasing the options for imaging, sculpting or characterizing materials.<img src="" height="1" width="1"/>
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