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allaboutsymbian
March 14th, 2010, 11:40
http://www.blogcdn.com/www.engadget.com/media/2010/03/li-s-battery-03122010-1268437253.jpg (http://pubs.acs.org/doi/pdf/10.1021/nl100504q?cookieSet=1)
Longer battery (http://www.engadget.com/tag/battery) life is high atop our list of gadget prayers (http://www.engadget.com/tag/religion), and the brainiacs at Stanford are one step closer to making our dreams come true with a new lithium-sulfur technology. Half of this trick lies in the silicon nanowire anode (http://www.engadget.com/2007/12/19/stanfords-nanowire-battery-leapfrogs-li-ion/) that the same team developed back in 2007, whereas the new cathode consists of a similarly commodious lithium sulfide nanostructure. Compared to present lithium-ion batteries, Stanford's design is "significantly safer (http://www.engadget.com/tag/battery%2Cexplosion)" and currently achieves 80 percent more capacity, but it's nowhere near commercial launch with just 40 to 50 charge cycles (Li-ion does "300 to 500") due to the compound's rapid degradation. That said, we're promised a theoretical quadruple boost in capacity as the technology matures, so until then we'll keep that hamster running in our backpack (http://www.engadget.com/2009/10/06/video-power-generating-backpack-is-a-gift-from-the-gadget-gods/).Stanford develops safer lithium-sulfur batteries with four times the charge of lithium-ion cells (http://www.engadget.com/2010/03/14/stanford-develops-safer-lithium-sulfur-batteries-with-four-times/) originally appeared on Engadget (http://www.engadget.com) on Sun, 14 Mar 2010 07:29:00 EST. Please see our terms for use of feeds (http://www.weblogsinc.com/feed-terms/).


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