Title:
LITHIUM SECONDARY BATTERY NEGATIVE ELECTRODE MEMBER AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP3716833
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lithium secondary battery capable of preventing a short circuit due to generation of dendrite from a lithium negative electrode, having high energy density and an excellent charge-discharge cycle characteristic, and high in stability and safety.
SOLUTION: This lithium secondary battery negative electrode member is so structured that a lithium film and an inorganic solid electrolyte film are formed on a substrate by stacking them. The lithium secondary battery negative electrode member is characterized by that the inorganic solid electrolyte contains lithium, phosphorous, sulfur and oxygen, and is expressed by a composition formula aLi-bP-cS-dO, wherein Li is lithium; P is phosphorous; S is sulfur; and O is oxygen; and composition ranges of the respective elements satisfy 0.20≤a≤0.45, 0.10≤b≤0.20, 0.35≤c≤0.60 and 0.03≤d≤0.13 (a+b+c+d=1). The lithium film preferably contains 1-10 atom% of oxygen.
Inventors:
Susumu Ota
Nobuyuki Okuda
Hiroyuki Ueki
Hirohiko Ihara
Nobuyuki Okuda
Hiroyuki Ueki
Hirohiko Ihara
Application Number:
JP2003006566A
Publication Date:
November 16, 2005
Filing Date:
January 15, 2003
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
C01D15/00; H01M4/134; H01M4/1395; H01M4/40; H01M10/05; H01M10/052; H01M10/0562; (IPC1-7): H01M4/02; C01D15/00; H01M4/04; H01M4/40; H01M10/40
Domestic Patent References:
| JP2002329524A | ||||
| JP4231346A | ||||
| JP4202024A | ||||
| JP6115911A | ||||
| JP5306119A | ||||
| JP4231346A | ||||
| JP2002319391A | ||||
| JP2002097564A | ||||
| JP2000340257A |
Attorney, Agent or Firm:
Masami Sakai
Norio Kagami
Jun Komatsu
Hidetake Komatsu
Norio Kagami
Jun Komatsu
Hidetake Komatsu
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