Latest Technology News


Bacteria can use magnetic particles to create a 'natural battery'

Thu, 26 Mar 2015 15:16:54 EDT

New research shows bacteria can use tiny magnetic particles to effectively create a 'natural battery.' According to new work, the bacteria can load electrons onto and discharge electrons from microscopic particles of magnetite. This discovery holds out the potential of using this mechanism to help clean up environmental pollution, and other bioengineering applications.<img src="//" height="1" width="1" alt=""/>
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Mobile battery life can be prolonged with system settings

Wed, 25 Mar 2015 11:07:29 EDT

By using crowdsourced measurements researchers explain the energy impact of smartphone system settings, and their results show how to improve a mobile device's battery lifetime by adjusting the settings. Researchers have studied how the impact of different settings on battery lifetime can be estimated using crowdsourced measurements from a large community of devices.<img src="//" height="1" width="1" alt=""/>
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New processing technology converts used packing peanuts to battery components

Sun, 22 Mar 2015 08:03:09 EDT

Researchers have shown how to convert waste packing peanuts into high-performance carbon electrodes for rechargeable lithium-ion batteries that outperform conventional graphite electrodes, representing an environmentally friendly approach to reuse the waste.<img src="//" height="1" width="1" alt=""/>
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'Green' batteries made to last: Oxide/carbon composite outperforms expensive platinum composites

Thu, 19 Mar 2015 19:31:16 EDT

An oxide/carbon composite outperforms expensive platinum composites in oxygen chemical reactions for green energy devices. Electrochemical devices are crucial to a green energy revolution in which clean alternatives replace carbon-based fuels. This revolution requires conversion systems that produce hydrogen from water or rechargeable batteries that can store clean energy in cars. Now, Singapore-based researchers have developed improved catalysts as electrodes for efficient and more durable green energy devices.<img src="//" height="1" width="1" alt=""/>
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Quantum dots 'breathe' in response to stress

Thu, 19 Mar 2015 09:19:42 EDT

Researchers have watched nanoscale semiconductor crystals expand and shrink in response to powerful pulses of laser light. This ultrafast "breathing" provides new insight about how such tiny structures change shape as they start to melt -- information that can help guide researchers in tailoring their use for a range of applications.<img src="//" height="1" width="1" alt=""/>
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Human brain inspires wearable micro-sensors

Wed, 18 Mar 2015 07:40:56 EDT

An electrical and computer engineer is taking a cue from nature to devise the next generation of integrated low-power, wearable micro-devices.<img src="//" height="1" width="1" alt=""/>
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Materials research could unlock potential of lithium-sulfur batteries

Tue, 17 Mar 2015 10:39:08 EDT

Scientists have discovered a high performance cathode material with great promise for use in next generation lithium-sulfur batteries that could one day be used to power mobile devices and electric cars.<img src="//" height="1" width="1" alt=""/>
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Density of lithium storage materials increased

Mon, 16 Mar 2015 11:34:24 EDT

Scientists have pushed the limits to further development of lithium ion batteries: The researchers developed a new cathode material based on a new storage principle, as a result of which energy storage densities can be increased beyond those of systems known so far.<img src="//" height="1" width="1" alt=""/>
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High power and high safety oxide-based negative electrode materials for Li-ion battery

Fri, 13 Mar 2015 09:45:59 EDT

Researchers have shown electrochemical Li insertion and deinsertion property of Ti-Nb mixed oxide Ti2Nb10O29 (TNO) at high current rate is greatly improved by vacuum annealing. This is mainly attributed to enhancement of intrinsic electronic conductivity of TNO by introducing oxygen vacancy. Vacuum-annealed TNO is promising negative electrode material of high power and high safety Li-ion battery for large scale application.<img src="//" height="1" width="1" alt=""/>
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Silk could be new 'green' material for next-generation batteries

Wed, 11 Mar 2015 12:44:31 EDT

Lithium-ion batteries have enabled many of today's electronics, from portable gadgets to electric cars. But much to the frustration of consumers, none of these batteries last long without a recharge. Now scientists report the development of a new, 'green' way to boost the performance of these batteries -- with a material derived from silk.<img src="//" height="1" width="1" alt=""/>
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Longer life cycle for lithium-ion batteries?

Fri, 06 Mar 2015 18:17:38 EST

Lithium-ion batteries are common in consumer electronics. They are one of the most popular types of rechargeable batteries for portable electronics, with a high energy density, no memory effect and only a slow loss of charge when not in use. Beyond consumer electronics, lithium-ion batteries have also grown in popularity for military, electric vehicle and aerospace applications. Researchers are exploring new energy storage technology that could give the battery an even longer life cycle.<img src="//" height="1" width="1" alt=""/>
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Microscopy directly images problematic lithium dendrites in batteries

Fri, 06 Mar 2015 10:23:51 EST

Scientists have captured the first real-time nanoscale images of lithium dendrite structures known to degrade lithium-ion batteries. Dendrites form when metallic lithium takes root on a battery's anode and begins growing haphazardly. If the dendrites grow too large, they can puncture the divider between the electrodes and short-circuit the cell, resulting in catastrophic battery failure.<img src="//" height="1" width="1" alt=""/>
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Big box stores could ditch the grid, use natural gas fuel cells instead

Wed, 04 Mar 2015 19:02:32 EST

Natural gas powered solid oxide fuel cells, located at the point of use to produce electricity for facilities the size of big box stores, could provide economic and environmental benefits, with additional research, according to new study.<img src="//" height="1" width="1" alt=""/>
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Understanding electric car 'range anxiety' could be key to wider acceptance

Tue, 03 Mar 2015 12:39:25 EST

Drivers have been slow to adopt electric vehicles due to 'range anxiety,' the fear of becoming stranded with an empty battery. This phenomenon was recently addressed in a study that aims to explain range anxiety and determine whether hands-on experience can reduce drivers' stress.<img src="//" height="1" width="1" alt=""/>
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Glass coating improves battery performance

Mon, 02 Mar 2015 15:08:25 EST

Researchers have investigated a strategy to prevent this 'polysulfide shuttling' phenomenon by creating nano-sized sulfur particles, and coating them in silica, otherwise known as glass.<img src="//" height="1" width="1" alt=""/>
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Lithium from the coal in China

Thu, 26 Feb 2015 10:16:27 EST

Coal from China could become a major source of the metal lithium, according to a review of the geochemistry. Lithium is an essential component of rechargeable batteries used almost ubiquitously in mobile gadgets such as phones, laptops, tablet computers and in many electric vehicles.<img src="//" height="1" width="1" alt=""/>
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New flow battery to keep big cities lit, green and safe

Wed, 25 Feb 2015 12:27:41 EST

The new zinc-polyiodide redox flow battery uses an electrolyte that has more than two times the energy density of the next-best flow battery used to store renewable energy and support the power grid. It's high energy density, and resulting lower cost, make it ideal for large cities where space is at a premium.<img src="//" height="1" width="1" alt=""/>
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Electric-car driving range and emissions depend on where you live

Wed, 25 Feb 2015 11:43:25 EST

Many car buyers weighing whether they should go all electric to help the planet have at least one new factor to consider before making the switch: geography. Based on a study of a commercially available electric car, scientists report that emissions and driving range can vary greatly depending on regional energy sources and climate.<img src="//" height="1" width="1" alt=""/>
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In quest for better lithium-air batteries, chemists boost carbon's stability

Wed, 25 Feb 2015 09:43:17 EST

Chemists report nano-coatings increased the stability of a unique form of carbon, yielding performance gains focused on next generation lithium-air batteries.<img src="//" height="1" width="1" alt=""/>
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Dendrite eraser: New electrolyte rids batteries of short-circuiting fibers

Tue, 24 Feb 2015 14:31:12 EST

A new electrolyte allows rechargeable batteries to operate well without growing dendrites, tiny pin-like fibers that short-circuit rechargeable batteries.<img src="//" height="1" width="1" alt=""/>
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Using 'fuzzy logic' to optimize hybrid solar/battery systems

Tue, 24 Feb 2015 11:29:29 EST

A group of researchers in Tunisia and Algeria show how fuzzy logic has helped them create an ideal photovoltaic system that obeys the supply-and-demand principle and its delicate balance. They have now described this new sizing system of a solar array and a battery in a standalone photovoltaic system.<img src="//" height="1" width="1" alt=""/>
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Radio chip for the 'Internet of things'

Mon, 23 Feb 2015 12:26:53 EST

A circuit that reduces power leakage when transmitters are idle could greatly extend battery life.<img src="//" height="1" width="1" alt=""/>
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New paper-like material could boost electric vehicle batteries

Wed, 18 Feb 2015 16:58:30 EST

Researchers have developed a novel paper-like material for lithium-ion batteries. It has the potential to boost by several times the specific energy, or amount of energy that can be delivered per unit weight of the battery.<img src="//" height="1" width="1" alt=""/>
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Better batteries inspired by lowly snail shells

Wed, 11 Feb 2015 12:25:27 EST

Researchers have isolated a peptide, a type of biological molecule, which binds strongly to lithium manganese nickel oxide (LMNO), a material that can be used to make the cathode in high performance batteries. The peptide can latch onto nanosized particles of LMNO and connect them to conductive components of a battery electrode, improving the potential power and stability of the electrode.<img src="//" height="1" width="1" alt=""/>
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To reassure electric car buyers, combine battery leasing with better charging

Wed, 28 Jan 2015 15:22:03 EST

A proper choice of business model plays a critical role in electric vehicle industry where many consumers are subject to range and resale anxieties. In particular, a combination of owning or leasing electric batteries and improving charging technology can reassure such skeptics and help increase the electric vehicle adoption, according to a new study.<img src="//" height="1" width="1" alt=""/>
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'Bulletproof' Battery: Kevlar Membrane for Safer, Thinner Lithium Rechargeables

Tue, 27 Jan 2015 09:59:25 EST

New battery technology should be able to prevent the kind of fires that grounded Boeing 787 Dreamliners in 2013. The innovation is an advanced barrier between the electrodes in a lithium-ion battery.<img src="//" height="1" width="1" alt=""/>
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First public lighting system that runs on solar and wind energy

Tue, 20 Jan 2015 08:58:19 EST

Scientists have developed the first autonomous industrialized public lighting system that works with solar and wind energy.<img src="//" height="1" width="1" alt=""/>
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Glass for battery electrodes

Tue, 13 Jan 2015 11:15:33 EST

Today's lithium-ion batteries are good, but not good enough if our future energy system is to rely on electrical power. Chemists and materials scientists have now developed a type of glass that can be used as an electrode material in lithium-ion batteries -- likely making a vast improvement in these batteries' capacity and energy density.<img src="//" height="1" width="1" alt=""/>
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Chemist one step closer to a new generation of electric car battery

Mon, 12 Jan 2015 13:55:31 EST

An ultra-thin nanomaterial is at the heart of a major breakthrough by scientists who are in a global race to invent a cheaper, lighter and more powerful rechargeable battery for electric vehicles.<img src="//" height="1" width="1" alt=""/>
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Compact batteries enhanced by spontaneous silver matrix formations

Thu, 08 Jan 2015 14:13:13 EST

A conductive silver matrix forming inside an otherwise poorly performing battery enhances its efficiency and potential applications. X-rays revealed where, when, and how these nanoscale "bridges" emerge.<img src="//" height="1" width="1" alt=""/>
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