Title:
非水溶媒二次電池の負極集電体用銅箔
Document Type and Number:
Japanese Patent JP3581784
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide copper foil for the negative electrode current collector of a nonaqueous solvent secondary battery having a large battery capacity when discharged for the first time and being excellent in charge/discharge cycle life, particularly an Li ion secondary battery, and a method for manufacturing the same. SOLUTION: This copper foil has the inverse number (1/C) of an electric double layer capacity on at least one side of the copper foil being 0.1 to 0.3 cm<2> /μF, and is manufactured by dipping either degreased rolled copper coil or electrolytic copper foil, which is water washed and dried after electrolytic foiling, either in a solution obtained by dissolving at least triazoles in a solvent or in an aqueous solution obtained by dissolving in water at least one kind selected from the group consisting of chromium trioxide, chromates, and bichromates.
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Inventors:
Toshio Tani
Ryoichi Oguro
Ryoichi Oguro
Application Number:
JP7062098A
Publication Date:
October 27, 2004
Filing Date:
March 19, 1998
Export Citation:
Assignee:
THE FURUKAW ELECTRIC CO.,LTD.
Furukawa Circuit Foil Co., Ltd.
Furukawa Circuit Foil Co., Ltd.
International Classes:
H01M4/02; H01M4/64; H01M4/66; (IPC1-7): H01M4/64; H01M4/66
Domestic Patent References:
| JP10021928A | ||||
| JP9306504A | ||||
| JP2008373A | ||||
| JP11158652A |
Other References:
日本プレーティング協会編,現場技術者のための実用めっき(I),日本,槇書店,1989年 7月10日,P308
Attorney, Agent or Firm:
山▲崎▼ 京介