Nonaqueous secondary battery and method for preparing same
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United States of America Patent
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Apr 16, 2002
Grant Date -
N/A
app pub date -
Aug 11, 1998
filing date -
Feb 16, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A nonaqueous secondary battery comprising a positive electrode sheet having a layer mainly comprising a lithium-containing metal oxide, a negative electrode sheet having a negative electrode material mixture layer mainly comprising a negative electrode material laminated with a metallic material mainly comprising lithium, a nonaqueous electrolytic solution containing a lithium salt, and a separator, wherein the nonaqueous secondary battery is prepared by a process which comprises winding the positive electrode sheet, negative electrode sheet and separator; inserting the elements thus wound into a battery can; injecting said electrolytic solution into the battery can, sealing the battery can, and then ageing the battery, whereby lithium is previously intercalated in the negative electrode sheet to provide a nonaqueous secondary battery having a high discharge capacity and good charge-discharge cycle characteristics.
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