Cell stack design with bi-directionally wound slotted electrodes and method for making
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United States of America Patent
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Jul 23, 2002
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app pub date -
Oct 11, 2001
filing date -
Mar 4, 1999
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Abstract
An electrochemical cell comprising an electrode assembly in which opposite polarity electrodes are wound together in a bi-directional fashion yielding a high energy density cell stack with low internal impedance is described. Each electrodes is constructed having a slot provided into its width at about a midportion thereof. The slots are brought into registry with each other to form a collapsible X-shaped electrode assembly, which is then bi-directionally folded to provide a wound electrode assembly.
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