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Technology

Better organic compound developed for thermoelectric devices

By mixing two polymers used in L.E.D.s and solar cells, researchers from the University of Michigan have developed a better thermoelectric material. Thermoelectric materials can turn heat into electricity and are being looked at as a way to harness waste heat from industrial processes or even automobiles as a source of power. Most efficient thermoelectric materials are made of rare inorganic semiconductors...

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Low-cost flow batteries for effective grid energy storage

In order for renewable energy sources to be completely integrated into the power grid, there has to be a way to store and release quantities of renewable energy into the grid as needed. A low-cost, long-life battery is needed to incorporate more solar and wind in the grid as it cannot tolerate large and sudden power fluctuations caused by a decrease or increase in power produced. When talking...

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Lower-quality silicon can produce more efficient solar cells – U.N.S.W.

Controlling the hydrogen atoms in low-grade silicon could enable the creation of more efficient, less costly solar panels. Solar engineers from the University of New South Wales have developed a patented technique to improve the quality of low-grade silicon. “The process will allow lower-quality silicon to outperform solar cells made from better-quality materials,” said Scientia Professor Stuart Wenham...

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Meeting a community’s power needs with battery-based energy storage systems

A reliable energy storage system – enough to power homes and buildings for a given time – is considered crucial to developing more energy efficient green communities. A good energy storage system could facilitate the integration of more renewable power generation into the grid, as it could store energy that could be used when gaps arise due to the sun going down or the wind blowing soft. Community energy storage...

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Sponge-like foam allows for better exhaust gas clean-up

A new catalytic substrate made of ceramic foam allows for cheap and efficient clean-up of exhaust gases from diesel vehicles. Empa has developed the catalytic substrate which has an irregular structure, much like a sponge, which allows it to better filter the exhaust gases while using less material then the exhaust filters currently in used. In a basic exhaust cleaning unit, a catalytically active layer...

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Boeing, U.N.S.W. getting hopes up for lighter-weight, more fuel efficient aircraft

Stronger and more lightweight materials could result into more fuel efficient aircraft. With the rising concern over aviation industry’s emissions, many major air carriers are seeking to reduce their fossil fuel use – either through the development of alternative fuels or more fuel-efficient aircraft. To this extent, air carrier Boeing is looking into new, lighter-weight materials for their aircraft. Boeing Research and...

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Reducing xylan for better biofuels

Researchers at the United States Department of Energy’s Joint BioEnergy Institute have engineered plants with higher, easily accessible sugar content for biofuels. The engineered plants had a lower amount of xylan in their cell walls. Xylan composes a large part of plant cell walls and can make it difficult to extract the sugars in cellulose. “We’ve shown that it is possible to obtain plants that...

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Plant sugars, enzyme cocktails for clean and green hydrogen fuel

Hydrogen fuel just got greener, with a new environmentally friendly method of generating hydrogen from a plant material developed by researchers from Virginia Tech. According to the United States’ Department of Energy, hydrogen fuel could dramatically reduce reliance on fossil fuels since vehicles that run on such cells produce no pollutants as their only emission is water vapor. Using hydrogen for most of...

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Electricity producing bacteria to create bio-battery

Bacteria that can produce an electric current upon contact with metal could form the basis of a clean energy bio-battery. Scientists at the University of East Anglia have found that it is possible for bacteria to lie directly on the surface of a metal or mineral and transfer an electrical charge through their cell membranes. “We knew that bacteria can transfer electricity into metals and minerals, and that the interaction...

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Ribbons of material create better cathode for lithium-ion batteries

Combining vanadium oxide with graphene could create a superior cathode for high-power lithium-ion batteries. Rice University materials scientist Pulickel Ajayan worked with hybrid ribbons of the two materials that – though they are thinner than a sheet of paper – have a potential that far outweighs current cathode materials. The cathodes built at Rice for testing could fully charge and discharge in 20 seconds...

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