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02 Nov 2009 HEADLINE


Austrian University Develops Gel to Improve Lithium Battery Energy Density



Source: EE Times
Class: SYNDICATED NEWS

SYNOPSIS: Silicon-based gel reduces mechanical stresses on electrode in lithium-ion batteries

MUNICH, Germany -- In the quest for more powerful automotive batteries, researchers from the Technical University of Graz (Austria) have achieved significant progress: They have invented a gel that helps to increase the power density by a factor of two or more.

In today's lithium-ion batteries, one of the electrodes is typically made of graphite. If the electrode is coated with silicon, the lithium ion storage capability is increased by a factor of ten -- but the vapor deposition method to coat the electrode led to inadequate results since the silicon features volume changes over temperature.

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