ALL SOLID STATE SECONDARY BATTERY AND METHOD FOR MANUFACTURING ALL SOLID STATE SECONDARY BATTERY

WIPO Patent Application WO/2011/105574

A1

Disclosed are: an all solid state secondary battery wherein a solid electrolyte layer can be formed thin and the internal resistance is low; a method for manufacturing an all solid state secondary battery, by which an extremely thin solid electrolyte layer can be formed; and a method for manufacturing an all solid state secondary battery, by which application unevenness of a slurry composition for a solid electrolyte layer is reduced and the internal resistance can be lowered. Specifically disclosed is an all solid state secondary battery which comprises a positive electrode that has a positive electrode active material layer, a negative electrode that has a negative electrode active material layer, and a solid electrolyte layer that is arranged between the positive and negative electrode active material layers. The all solid state secondary battery is characterized in that: the thickness of the solid electrolyte layer is 1-15 μm; the solid electrolyte layer contains solid electrolyte particles (A) that have an average particle diameter of 1.5 μm or less; the solid electrolyte particles (A) have a cumulative 90% particle diameter of 2.5 μm or less; the positive electrode active material layer and the negative electrode active material layer contain solid electrolyte particles (B); and the average particle diameter of the solid electrolyte particles (B) is smaller than the average particle diameter of the solid electrolyte particles (A), with the difference being 0.3-2.0 μm (inclusive).

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YOSHIDA NAOKI (JP)
YABUTA NAOHARU (JP)

PCT/JP2011/054369

September 01, 2011

February 25, 2011

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ZEON CORP (JP)
YOSHIDA NAOKI (JP)
YABUTA NAOHARU (JP)

H01M10/0562; H01M4/139; H01M4/62; H01M10/052; H01M10/0585; H01M50/403

JP2009211950A	2009-09-17
JP2004185862A	2004-07-02
JP2006086102A	2006-03-30
JP2010056093A	2010-03-11
JP2009181877A	2009-08-13
JP2008546135A	2008-12-18
JPH10195310A	1998-07-28
JP2009545128A	2009-12-17
JP2007141649A	2007-06-07
JP2005011540A	2005-01-13

MAEDA, Hitoshi et al. (JP)
Hitoshi Maeda (JP)

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