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Edison battery gets new take on life News in Science ABC Science
Old is totally new again Scientists have given a 21st-century makeover to the nickel-iron battery, a gadget conceived by Thomas Edison during the era from the steam engine.
The upgraded battery can be recharged in about 2 and half minutes,[url=http://woolrichschweizch.gengfl.com/][b]Woolrich Parka Winter Woolrich Online Shop Schweiz Sale Die Gute Qualität Woolrich[/b][/url], as opposed to several hours at present, and discharges in under 30 seconds.
Since it can store and release energy so quickly, the battery could be a boon for the renewable-energy industry and also help power cars as Edison originally envisaged, the researchers report in the journal Nature Communications.
Devised by Edison and fellow inventor Waldemar Jungner in 1902,[url=http://giuseppezanottisneakers.webmium.com/][b]giuseppe zanotti sneakers on sale[/b][/url], the nickel-iron battery comprises two electrodes,[url=http://monclerjackendeutschland.albirank.net/][b]http://monclerjackendeutschland.albirank.net/[/b][/url], one made of nickel and also the other of iron, which are immersed in an alkaline solution.
Its advantage is the fact that materials are abundant and cheap and also the solution is relatively harmless when compared with toxic lead-acid batteries.
Nickel-iron batteries were marketed for cars until the 1920s, but then dropped out of the picture because they were not as powerful as petrol and diesel fuel engines.
Another downside was they took a long time to recharge.
They remained a robust backup power source for railways, mines and other industries before falling out of favour in the mid-1970s. Today, only a handful of companies result in the batteries, mainly to keep surplus electricity from solar and wind turbines and release it during periods of peak demand.
Utilising nanotechnologyThe new-generation battery comes thanks to a team led by Hongjie Dai, a chemistry professor at Stanford University in California.
They've bonded the electrodes to carbon nanotubes and also to graphene,[url=http://monclerjackendeutschland.albirank.net/][b]Moncler Jacken Günstig online Deutschland Moncler Jacke Herren Outlet Shop[/b][/url], a super-material made of carbon only one atom thick, gaining a dramatic boost in conductivity.
"Coupling the nickel and iron particles towards the carbon substrate allows electrical charges to move quickly between your electrodes and also the outside circuit," says Dai.
"The result is an ultra-fast version of the nickel-iron battery that's capable of charging and discharging in seconds,[url=http://peutereyjacketsuppliers.webmium.com/][b]Peuterey men[/b][/url]."
To date, Dai's lab has made a little one-volt prototype that may attempt a flashlight. Size for size,[url=http://peutereyjacketsuppliers.webmium.com/][b]http://peutereyjacketsuppliers.webmium.com/[/b][/url], it has nearly 1000 times the density energy of traditional nickel-iron batteries.
Well suited for fast accelerationScaling up the lab gadget to bigger applications should not be problem,[url=http://duveticadoudoune.halod.com/][b]Doudoune Duvetica[/b][/url], also it should find a ready outlet in situations where a quick jolt is needed from a power source that's easily replenished.
"Our battery probably won't be able to power an electrical car alone, because the energy density isn't ideal,[url=http://woolrichdeutschlandarcticparka.albirank.net/][b]woolrich outlet[/b][/url]," says researcher Hailiang Wang.
"But it could assist lithium-ion batteries (in cars) giving them a real power boost for faster acceleration." Battery could then be replenished from regenerative braking.
The chemical mix used in the battery is water with potassium hydroxide, that is stable, cheap and safe,[url=http://peutereyjacketsuppliers.webmium.com/][b]Peuterey Jacket online[/b][/url], he adds.
The prototype comes with a hitch, in that after plenty of cycles of recharging, it no more supports the charge so well. After 800 cycles, the charge decays by in regards to a fifth,[url=http://monclerjacketsformenssale.albirank.net/][b]http://monclerjacketsformenssale.albirank.net/[/b][/url], an issue the Stanford team hopes to fix.
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