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technologies – renewables, energy savings, fuel cells

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Highest efficiency hydrogen production under natural sunlight

Researchers have produced hydrogen under natural sunlight at an energy conversion efficiency of 24.4%, the highest ever achieved, using high efficiency solar cells to power water electrolysis. This is a significant step toward the substitution of fossil fuels with solar hydrogen.

Posted: Sep 30th, 2015

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Green storage for green energy grows cleaner (w/video)

A team of scientists and engineers has demonstrated a rechargeable battery that could make storing electricity from intermittently available energy sources, like sun and wind, safe and cost-effective for both residential and commercial use.

Posted: Sep 25th, 2015

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Small-scale nuclear fusion may be a new energy source

Fusion energy may soon be used in small-scale power stations. This means producing environmentally friendly heating and electricity at a low cost from fuel found in water. Both heating generators and generators for electricity could be developed within a few years.

Posted: Sep 25th, 2015

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Inspired by art, lightweight solar cells track the sun

Solar cells capture up to 40 percent more energy when they can track the sun across the sky, but conventional, motorized trackers are too heavy and bulky for pitched rooftops and vehicle surfaces. Now, by borrowing from kirigami, the ancient Japanese art of paper cutting, researchers have developed solar cells that can have it both ways.

Posted: Sep 8th, 2015

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Wireless charging and discharging for electric vehicles

In the future, a wireless charging system will allow electric cars not only to charge their batteries, but also to feed energy back into the power grid, helping to stabilize it. The cost-effective charging system achieves high levels of efficiency across the whole power range, from 400 watts to 3.6 kilowatts, while the car and the charging coil can be up to 20 centimeters apart.

Posted: Sep 1st, 2015

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