Text 17831, 33 rader
Skriven 2007-05-09 11:20:10 av Rich Gauszka (1:379/45)
Ärende: double the capacity of lithium batteries?
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From: "Rich Gauszka" <gauszka@dontspamhotmail.com>

But will they explode as well in a laptop as previous batteries? <g>

http://www.tgdaily.com/content/view/31939/113/

Researchers of the Department of Energy's Argonne National Laboratory claim to
have developed an enhanced approach to building of rechargeable lithium-ion
batteries.

Scheduled for an unveiling at the meeting of the Electrochemical Society today,
the new technology is based on a "manganese-rich" nano-crystalline,
layered-composite structure that is used as material for the positive
electrode. According to an early announcement, the researchers are using a uses
a two-component "composite" structure: An active component for charge storage
is embedded in an inactive component that stabilizes the structure.

First test results are promising: The scientists claim that the new materials
yielded record charge-storage capacities of more than 250 mAh/g or more than
twice the capacity of materials used in rechargeable lithium batteries today. 
In addition to the capacity advantage, the presenters also say that
manganese-rich systems are cheaper to manufacture than today's cobalt and
nickel versions of lithium batteries.

According to a press release, the technology could be used in virtually all
lithium-based rechargeable batteries - and improve the battery life for example
in consumer electronics, laptops, medical devices and even hybrid electric
vehicles.

It was unclear if and when the technology could go into mass production.

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