Hasta La Gadget!

Is there anything lasers can’t do? We only ask because they seem to be improving everything from microphones to railroads, and now researchers from Purdue University have leveraged the power of light to better manufacture solar cells. Using an ultrashort (as in quadrillionths of a second) pulse laser to more precisely scribe the microchannels connecting thin-film solar cells — as compared to current mechanical stylus methods — the Boilermakers were able to improve energy transfer efficiency between cells and significantly reduce manufacturing time. Having demonstrated the process works, research continues to better understand and prepare it for use by manufacturers — sooner rather than later, we hope.

Purdue researchers make solar cell manufacturing cheaper, more efficient with lasers originally appeared on Engadget on Fri, 11 Mar 2011 07:17:00 EDT. Please see our terms for use of feeds.

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As the sustainable Juggernaut of fuel cell vehicles (FCV) powers ever forward, a group of scientists are cooking up ways to make the alternative energy source more durable and even cheaper. By combining graphene — think pencil lead — and indium tin oxide (ITO) nanoparticles, the team produced a catalytic material that is both stronger and more chemically active than the usual catalytic combo. Fuel cells typically use a chemical catalyst like platinum, sitting atop a base of black carbon or metal oxides, to break down oxygen and hydrogen gases, creating water in the process — thing is, carbon is easily eroded by the resulting water, and metal oxides, while more stable, are less conductive. Using graphene — which because of its porousness erodes less quickly — in combination with the stable ITO and platinum nanoparticles, researchers have created what could be referred to as a super fuel cell — a stronger, longer lasting, and potentially cheaper version of the alternative energy source. Unfortunately, without enough hydrogen filling stations, these super fuel cells won’t come to anyone’s rescue anytime soon.

Fuel cells get stronger, potentially cheaper with graphene, ITO originally appeared on Engadget on Wed, 16 Feb 2011 01:01:00 EDT. Please see our terms for use of feeds.

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Solar power is the most egalitarian of all energy sources, yet residents in many parts of the world still lack access to electricity. Three University of Michigan engineering students have created an affordable solution to this problem — to the delight of camping geeks everywhere — with the Emerald, a portable solar panel that does double duty as both a cellphone charger and personal light source. We’ve seen the personal solar panel idea before, but the price of entry made it an untenable solution for developing nations. Solar-powered light bulbs have been around for a while too, but the Emerald’s light lasts for eight hours on a charge (as opposed to the bulbs’ two to six hours), and it’s able to fully charge a phone in the same time it takes an outlet to do the job. They aim to sell the device for the low, low, price of under twenty bucks for customers in the developing world, which is 90 percent cheaper than other solutions and 100 percent more awesome.

Continue reading UM students make cheap and portable solar charger / light source for developing nations

UM students make cheap and portable solar charger / light source for developing nations originally appeared on Engadget on Mon, 31 Jan 2011 18:35:00 EDT. Please see our terms for use of feeds.

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Toyota wants to take your range anxiety out for a walk behind the woodshed and obliterate it from the known world. The means for doing this, the Japanese giant has revealed, might very well be contained in its new magnesium-sulfur batteries, which promise to double the energy density of the current industry-best lithium ion cells. Of course, the catch here is that the new magnesium goodness is nowhere near ready and is projected to come in 2020 at the earliest, but we’re gladdened to see a long-term view being taken by car manufacturers with regard to powering vehicles electrically. Alternative methodologies currently under review in Toyota’s labs also include aluminum and calcium materials, showing that there is indeed no lack of ambition for making plug-ins respectable road warriors.

Toyota working on magnesium batteries for PHEVs of the not so near future originally appeared on Engadget on Fri, 14 Jan 2011 08:53:00 EDT. Please see our terms for use of feeds.

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We’re hesitant to file this one in the folder marked “Awesome Things That’ll Never Happen,” but it’s definitely on the watch list. A new prototype solar device has been concocted to convert sunlight into fuel, much in the same way a plant does. Eco-minded folks will probably understand that conventional photovoltaic panels “must use the electricity they generate in situ,” and thus, cannot deliver energy at night; this here device takes a rather unorthodox approach, using the sun’s rays along with ceria (a magical, marvelous metal oxide) to “break down carbon dioxide or water into fuels which can be stored and transported.” In theory, at least, the device could be used to create hydrogen and / or carbon monoxide, with the former being obviously useful for fueling up hydrogen-based cars of the future. Sadly, the existing prototype is horribly inefficient — only around 0.7 percent of the solar energy can be converted into fuel — but researchers are adamant that they can boost that to nearly 20 percent in time. We’ll check back in a decade or so to see how things are progressing.

New solar machine could generate hydrogen fuel, food for your future vehicle originally appeared on Engadget on Sun, 26 Dec 2010 02:18:00 EDT. Please see our terms for use of feeds.

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