Carbonaceous insertion compounds and use as anodes in rechargeable batteries
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United States of America Patent
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Dec 16, 1997
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N/A
app pub date -
Jun 19, 1996
filing date -
Mar 3, 1995
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Expired
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Abstract
Carbonaceous insertion compounds and methods for preparation are described wherein the compounds comprise silicon and oxygen and are characterized by x-ray diffraction patterns that resemble that of amorphous silicon dioxide. The compounds can exhibit a large reversible capacity for lithium and can be prepared by simple pyrolysis of suitable polymer/s containing silicon, oxygen and carbon at an appropriate temperature. These insertion compounds may be suitable for use as high capacity anodes in lithium ion batteries.
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