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Title:
SOLID ELECTROLYTE COMPOSITION, SOLID ELECTROLYTE, LITHIUM ION SECONDARY BATTERY, AND METHOD FOR PRODUCING LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2011/099497
Kind Code:
A1
Abstract:
Provided are a solid electrolyte composition and a solid electrolyte which exert excellent lithium ion conductivity and strength at low temperatures. Also provided are a lithium ion secondary battery and a method for producing a lithium ion battery in which the charging/discharging performance and the strength of the solid electrolyte layer are improved at low temperatures. The matrix of a solid electrolyte has a nanostructure in which a nonreactive polyalkylene glycol is held onto a co-crosslinked product in which a highly branched polymer and a crosslinkable ethylene oxide multicomponent copolymer are chemically crosslinked. A lithium salt is dissolved in the matrix. A negative electrode active material layer is formed by dispersing a negative electrode active material and a conductive assistant in a lithium ion conductive solid electrolyte. A positive electrode active material layer is formed by dispersing a positive electrode active material and a conductive assistant in a lithium ion conductive solid electrolyte.

Inventors:
ITOH TAKAHITO (JP)
UNO TAKAHIRO (JP)
TAKEDA YASUO (JP)
IMANISHI NOBUYUKI (JP)
ITSUBO AKIRA (JP)
NOMURA EIICHI (JP)
KATOH SHIGEMITSU (JP)
OKUDA SEIJI (JP)
Application Number:
JP2011/052694
Publication Date:
August 18, 2011
Filing Date:
February 09, 2011
Export Citation:
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Assignee:
UNIV MIE (JP)
ITOH TAKAHITO (JP)
UNO TAKAHIRO (JP)
TAKEDA YASUO (JP)
IMANISHI NOBUYUKI (JP)
ITSUBO AKIRA (JP)
NOMURA EIICHI (JP)
KATOH SHIGEMITSU (JP)
OKUDA SEIJI (JP)
International Classes:
H01M10/0565; C08F299/00; C08K3/10; C08L71/02; H01B1/06
Foreign References:
JP2003187637A2003-07-04
JP2005347048A2005-12-15
JP2004071405A2004-03-04
JP2008130529A2008-06-05
JP2006344504A2006-12-21
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
Hidetoshi Yoshitake (JP)
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Claims: