Title:
NON-AQUEOUS ELECTROLYTE SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2002/007239
Kind Code:
A1
Abstract:
A non-aqueous electrolyte secondary cell which has a negative electrode which comprises alloy particles comprising at least two selected from the group consisting of a metal element and a semi-metal element, oxygen and nitrogen, wherein the alloy particles have a A phase being capable of electrochemically occluding and releasing lithium ions and a B phase having permeability or conductivity for lithium ions. The B phase preferably contains both oxygen and nitrogen in more amounts than the B phase. The secondary cell can be used for solving problems that the alloy is likely to be pulverized during charge discharge cycle, and as a result, a cell using the alloy shows a short cycle life and not satisfactory discharge characteristics, which are accompanied by a conventional non-aqueous electrolyte secondary cell having a negative electrode comprising an alloy capable of occluding and releasing lithium.
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Inventors:
SATO TOSHITADA (JP)
BITO YASUHIKO (JP)
OKAMURA KAZUHIRO (JP)
NITTA YOSHIAKI (JP)
BITO YASUHIKO (JP)
OKAMURA KAZUHIRO (JP)
NITTA YOSHIAKI (JP)
Application Number:
PCT/JP2001/006189
Publication Date:
January 24, 2002
Filing Date:
July 17, 2001
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
SATO TOSHITADA (JP)
BITO YASUHIKO (JP)
OKAMURA KAZUHIRO (JP)
NITTA YOSHIAKI (JP)
SATO TOSHITADA (JP)
BITO YASUHIKO (JP)
OKAMURA KAZUHIRO (JP)
NITTA YOSHIAKI (JP)
International Classes:
C22C14/00; C22C1/04; C22C16/00; H01M4/02; H01M4/13; H01M4/36; H01M4/38; H01M10/05; B22F1/17; H01M4/40; H01M10/052; (IPC1-7): H01M4/38; H01M4/02; H01M10/40
Foreign References:
| JPH1186854A | 1999-03-30 | |||
| JPH1186853A | 1999-03-30 | |||
| JP2000173611A | 2000-06-23 |
Other References:
See also references of EP 1302994A4
Attorney, Agent or Firm:
Ishii, Kazuo (Kitahama 2-chome Chuo-ku Osaka-shi, Osaka, JP)
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