"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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2005-06-29
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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.
Member since:
2005-06-30
I'm assuming there has to be some reason for this tech to go into power tools first, and my guess has to be form factor. Size and shape aren't as critical for power tools as they would be in a cell phone.
When I first read it, I was very surprised that Sony wouldn't be putting this into one of their products first.
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2009-02-19
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2008-05-26
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2005-11-15
These cells http://www.a123systems.com/products have been around for more than 2 years and pack more power due to their higher discharge rate.
They are widely used in model planes and helicopters.
The thing is, they should make cells with a rectangular section, as with regular LiPo, instead of round. This way, they'd increase the power density.
Member since:
2007-03-30
these are not interesting for "cell phone, lappy, and other consumer electronics" because they are low energy density, high amperage cells.
Normal high end li-ions are like 2900mah and 3A draw, whereas these sony cells are 1100mah and 20A draw. Which is why they are mentioned as being used in power tools and... nothing else
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2005-09-21