NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES AND LITHIUM ION SECONDARY BATTERY
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United States of America Patent
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Issued Date -
Mar 17, 2011
app pub date -
Sep 13, 2010
filing date -
Sep 14, 2009
priority date (Note) -
Abandoned
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Abstract
A negative electrode comprising (A) particles having Si dispersed in SiO, and (B) a polyamide-imide resin which contains amide and imide groups in an amide/imide ratio of 25/75 to 99/1 and has a weight average molecular weight of 10,000-200,000 is suited for nonaqueous electrolyte secondary batteries. The electrode exhibits a high 1st cycle charge/discharge efficiency and improved cycle performance while maintaining a high battery capacity and a low volume expansion.
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