Title:
SECONDARY BATTERY POROUS MEMBRANE, SLURRY FOR SECONDARY BATTERY POROUS MEMBRANE, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2012/011555
Kind Code:
A1
Abstract:
[Problem] To provide: a porous membrane which is produced using a slurry for a porous membrane having excellent long-term storage stability and which is capable of improving safety and high-temperature cycle characteristics of a secondary battery that is obtained using the porous membrane; and a secondary battery using the porous membrane.
[Solution] A porous membrane of the present invention is characterized by containing: a binder that contains a polymerization unit composed of a (meth)acrylate ester monomer, a polymerization unit composed of a vinyl monomer having an acidic group and a polymerization unit composed of an α,β-unsaturated nitrile monomer; non-conductive particles; an isothiazoline compound; and a chelate compound. This porous membrane is also characterized in that the content of the isothiazoline compound is 0.001-1.0 part by mass relative to 100 parts by mass of the binder and the content of the chelate compound is 0.001-1.0 part by mass relative to 100 parts by mass of the binder.
Inventors:
KAIHATSU, Nobukazu (6-2 Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 〒1008246, JP)
Application Number:
JP2011/066673
Publication Date:
January 26, 2012
Filing Date:
July 22, 2011
Export Citation:
Assignee:
ZEON CORPORATION (6-2 Marunouchi 1-chome, Chiyoda-ku Tokyo, 46, 〒1008246, JP)
日本ゼオン株式会社 (〒46 東京都千代田区丸の内一丁目６番２号 Tokyo, 〒1008246, JP)
日本ゼオン株式会社 (〒46 東京都千代田区丸の内一丁目６番２号 Tokyo, 〒1008246, JP)
International Classes:
H01M4/02; H01M2/16; H01M4/04; H01M4/13; H01M4/139
Attorney, Agent or Firm:
MAEDA, Hitoshi et al. (MAEDA & SUZUKI, 2F Tokyodo Jinboucho 3rd Bldg., 1-17, Kandajinboucho 1-chome, Chiyoda-k, Tokyo 51, 〒1010051, JP)
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Claims: