Linked by Jordan Spencer Cunningham on Tue 11th Aug 2009 23:52 UTC
Hardware, Embedded Systems "Sony has announced a new type of lithium ion rechargeable battery that combines high-power and long-life performance, using olivine-type lithium iron phosphate as the cathode material. The Olivine-type lithium iron phosphate used in this new battery is a perfect cathode material due to its robust crystal structure and stable performance, even at high temperatures. These bateries have a high power density of 1800W/kg, and [four times the] extended life span of [current Li-Ions, with] approximately 2,000 charge-discharge cycles. What’s most surprising is that the battery will keep an 80% charge retention after those 2,000 charge-discharge cycles, which is very impressive. This new battery is also able to charge rapidly (99% in 30 minutes)." These buckoes will debut in power tools originally, but they'll eventually cross over to be smiling up at you from your cell phone, lappy, and other consumer electronics.
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RE: nice evolution
by rexstuff on Wed 12th Aug 2009 04:31 UTC in reply to "nice evolution"
rexstuff
Member since:
2007-04-06

No drawback? I'm not so sure. For one thing, the energy density seems a bit on the low side for a LiIon, 95Wh/kg vs 150-200 Wh/kg for a regular (according to Wikipedia). Assuming similar densities, the Volumetric energy density would be similarly disproportionate. The upshot is that battery life would be about half that of regular LiIons, per both weight and size.

Also, the article doesn't indicate any sort of cost comparison. If these things are too much more expensive, it simply doesn't make any sense.

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