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Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2005011802
Kind Code:
A
Abstract:

To provide a nonaqueous electrolyte secondary battery which is excellent in charge-discharge cycle characteristics, more specifically, for example, a nonaqueous electrolyte secondary battery capable of suppressing the reduction in conductivity of a negative electrode due to charge-discharge cycle, and its manufacturing method.

The nonaqueous electrolyte secondary battery comprises a positive electrode and negative electrode 10 that can reversibly store and release lithium, and a nonaqueous electrolyte having lithium conductivity. The negative electrode includes a collector 11 and active material particles 13 arranged on the surface of the collector. The active material particles include at least one kind of element R selected from among Sn, In, Ga, Pb, and Bi, in addition to Si, and metal bonds 15 including the element R are formed between the active material particles.


Inventors:
SATO TOSHITADA
SHIMAMURA HARUNARI
OYAMA HIDEAKI
MIFUJI YASUHIKO
Application Number:
JP2004150624A
Publication Date:
January 13, 2005
Filing Date:
May 20, 2004
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
C22C28/00; B82Y99/00; H01M4/134; H01M4/1395; H01M4/36; H01M4/38; H01M4/62; H01M4/66; H01M4/80; H01M10/05; (IPC1-7): H01M4/02; C22C28/00; H01M4/04; H01M4/38; H01M4/62; H01M4/66; H01M4/80; H01M10/40
Domestic Patent References:
JP2004022306A2004-01-22
JP2002260637A2002-09-13
JP2004319457A2004-11-11
JP2004235057A2004-08-19
JP2004178922A2004-06-24
JP2002075332A2002-03-15
Foreign References:
WO2002021616A12002-03-14
WO2000024070A12000-04-27
Attorney, Agent or Firm:
Ikeuchi, Sato & Partners