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Title:
SEPARATOR AND NONAQUEOUS ELECTROLYTE BATTERY
Document Type and Number:
Japanese Patent JP2013137984
Kind Code:
A
Abstract:

To prevent electrodes from being damaged or broken by expansion of the electrodes.

A separator for a nonaqueous electrolyte battery includes: a base material having a porous film; and a porous surface layer which is formed on at least one surface of the base material, contains particles and a resin material, and has a rugged surface shape with an arithmetic mean surface roughness Sa from 1.0 μm to 4.0 μm inclusive. In the separator for a nonaqueous electrolyte battery, the surface layer preferably has a compression ratio B/A of 0.4 or greater, where A is the thickness of the surface layer under a load of 3.57 N/cm2 and B is the collapse amount of the surface layer under a load of 4000 N/cm2.


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Inventors:
KAJITA ATSUSHI
AOKI MANABU
HATTA KAZUTO
HAYASHI MASAYASU
FUJIMOTO YUKAKO
Application Number:
JP2012000095403
Publication Date:
July 11, 2013
Filing Date:
April 19, 2012
Export Citation:
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Assignee:
SONY CORP
International Classes:
H01M2/18; H01M2/16; H01M4/13; H01M4/134; H01M10/052; H01M10/0587
Domestic Patent References:
JP2011138761A2011-07-14
JP2007083542A2007-04-05
JP2010171006A2010-08-05
JP2011138762A2011-07-14
JP2009238752A2009-10-15
JPH1180395A1999-03-26
JP2007311264A2007-11-29
JP2006278143A2006-10-12
JP2009518809A2009-05-07
JP2010244875A2010-10-28
JP2011138761A2011-07-14
JP2007083542A2007-04-05
JP2010171006A2010-08-05
JP2011138762A2011-07-14
JP2009238752A2009-10-15
JPH1180395A1999-03-26
JP2007311264A2007-11-29
JP2006278143A2006-10-12
JP2009518809A2009-05-07
Foreign References:
US20100003588A12010-01-07
EP2111914A12009-10-28
US20110027658A12011-02-03
WO2008018584A12008-02-14
US3159507A1964-12-01
US20100003588A12010-01-07
EP2111914A12009-10-28
US20110027658A12011-02-03
WO2008018584A12008-02-14
US3159507A1964-12-01
Attorney, Agent or Firm:
Masatomo Sugiura
Takuma Sugiura



 
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