NONAQUEOUS ELECTROLYTE BATTERY AND METHOD FOR PRODUCING SAME

Title:

NONAQUEOUS ELECTROLYTE BATTERY AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2011/148824

Kind Code:

A1

Abstract:

Disclosed are: a nonaqueous electrolyte battery, which is produced by bonding electrode bodies that are produced individually, and in which a short circuit between a positive electrode layer and a negative electrode layer can be more reliably prevented; and a method for producing the nonaqueous electrolyte battery. Specifically disclosed is an Li ion battery (nonaqueous electrolyte battery) (100) which comprises a positive electrode active material layer (12), a negative electrode active material layer (22), and a sulfide solid electrolyte layer (40) that is disposed between the active material layers (12, 22). The sulfide solid electrolyte layer (40) comprises a sulfur-added layer (43) in the center of the thickness direction thereof, and the sulfur-added layer (43) has a higher elemental sulfur content than the other portions of the sulfide solid electrolyte layer (40). The sulfur-added layer (43) has substantially no pin holes. The sulfur-added layer (43) is formed by combining a positive electrode body (1) and a negative electrode body (2), which are individually produced, with each other and then subjecting the electrode bodies to a heat treatment, thereby softening and integrating a positive electrode-side sulfur-added layer (14) of the positive electrode body (1) and a negative electrode-side sulfur-added layer (24) of the negative electrode body (2).

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Inventors:

OGAWA MITSUYASU (JP)
YOSHIDA KENTARO (JP)
OTA NOBUHIRO (JP)
GOTO KAZUHIRO (JP)

Application Number:

PCT/JP2011/061277

Publication Date:

December 01, 2011

Filing Date:

May 17, 2011

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)
OGAWA MITSUYASU (JP)
YOSHIDA KENTARO (JP)
OTA NOBUHIRO (JP)
GOTO KAZUHIRO (JP)

International Classes:

H01M10/0562; H01M10/0585

Domestic Patent References:

WO2011010552A1

2011-01-27

Foreign References:

JP2009004133A	2009-01-08
JP2009093995A	2009-04-30
JP2005032731A	2005-02-03
JP2009054484A	2009-03-12

Attorney, Agent or Firm:

NAKATA, Motomi et al. (JP)
Nakada Motoki (JP)

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Claims:

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