Saturday, March 29, 2008

EEStor battery-ultracapacitor

ALT

EEStor

Valued at some $66 million after Zenn Motor invested $2.5 million for a 3.8% stake in 2007, EEStor aims to solve the renewable energy problem with its "battery-ultracapacitor" hybrid technology. While traditional batteries wear out and have to be thrown away, "ultracaps" can be used and recharged for decades with almost no degradation; the downside is that they tend to hold about 25 times less energy per pound than lithium ion batteries, meaning that they have to be recharged fairly often. EEStor says it solved that problem using a ceramic ultracapacitor with a barium-titanate insulator that can absorb higher amounts of energy per given unit of mass. While critics claim the ultracaps are too costly to manufacture, EEStor plans to hit the market later this year.

http://www.forbes.com/2008/02/27/battery-motorola-mit-ent-tech-cx_bn_0228battery_slide_3.html?thisSpeed=3000000

3 comments:

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