Title:
BINDER SOLUTION FOR BATTERY AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JP3966570
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it stable to nonaqueous electrolyte, and improve adhesive strength to a current collecting base body by containing a hydrofluoric acid by a specific quantity to weight of a vinylidene fluoride polymer dissolved in an organic solvent, and also adding an acid except for the hydrofluoric acid.
SOLUTION: A vinylidene fluoride polymer is dissolved in an organic solvent, and a nonaqueous battery forming binder solution is adjusted. A hydrofluoric acid of 400 to 20000ppm is contained to weight of a vinylidene fluoride polymer in this binder solution. An acid except for the hydrofluoric acid is also added. The formation of the hydrofluoric acid is promoted by heating a vinylidene fluoride solution or addition of alkali. An organic acid is used as the acid except for the hydrofluoric acid. Electrode mix slurry for a nonaqueous battery is obtained by dispersing a powdery electrode material in this vinylidene fluoride polymer binder solution. This slurry is applied on a current collecting base body, and is dried, and is formed as an electrode structure body having an electrode mix layer.
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Inventors:
Takumi Katsurao
Hiroshi Kitago
Ai Nagai
Hiroshi Kitago
Ai Nagai
Application Number:
JP7921297A
Publication Date:
August 29, 2007
Filing Date:
March 14, 1997
Export Citation:
Assignee:
Kureha Co., Ltd.
International Classes:
C08K3/16; H01M4/62; C08L27/16; H01M4/139; H01M10/05; H01M10/0566; (IPC1-7): H01M4/62; C08K3/16; C08L27/16; H01M4/02; H01M4/04; H01M10/40
Domestic Patent References:
| JP9129237A |
Attorney, Agent or Firm:
Akio Saruwatari
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