
US Patent No: 6,001,139
Number of patents in Portfolio can not be more than 2000
Nonaqueous secondary battery having multiple-layered negative electrode
Stats
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Dec 14, 1999
Issued date -
Jul 10, 1997
filing date -
08/860,804
serial no -
In Force
status
Importance
Abstract
This invention provides a cylinder type nonaqueous secondary battery which comprises a positive electrode active material comprising a lithium-containing transition metal oxide, a composite oxide or composite chalcogen negative electrode material capable of intercalating and deintercalating lithium and a nonaqueous electrolyte containing a lithium metal salt, wherein high discharging capacity and excellent charge and discharge cycle characteristics are obtained by mounting a metal foil mainly comprising lithium in advance in a coiled group in which a current collector sheet coated with the positive electrode active material (positive electrode sheet), another current collector sheet coated with the negative electrode material (negative electrode sheet) and a separator are coiled in a spiral form.
First Claim
Related Publications
International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,618,640 Nonaqueous secondary battery | 45 | 1994 | |