Title:
銅被覆鋼箔、負極用電極及び電池
Document Type and Number:
Japanese Patent JP5306418
Kind Code:
B2
Abstract:
A negative electrode collector using a copper-covered steel foil for carrying a negative electrode active material for lithium ion secondary batteries has a steel sheet as the core material thereof and has, on both surfaces thereof, a copper covering layer having a mean thickness tCu of from 0.02 to 5.0 μm on each surface, and of which the total mean thickness, t, including the copper covering layer 7 is from 3 to 100 μm with tCu/t of at most 0.3. The steel sheet can be common steel, austenitic stainless steel, or ferritic stainless steel. The copper covering layer can be a copper electroplating layer (including one rolled after plating). On the surface of the copper covering layer, for example, a carbon-based active material layer that has been densified through strong roll pressing is formed, and the copper-covered steel foil and the carbon-based active material layer constitute the negative electrode collector.
Inventors:
Mashima
Takao Tsujimura
Takeshi Shimizu
Yoshikazu Morita
Takahiro Fujii
Norihiro Ima
Yoshida Yoshie
Takao Tsujimura
Takeshi Shimizu
Yoshikazu Morita
Takahiro Fujii
Norihiro Ima
Yoshida Yoshie
Application Number:
JP2011133556A
Publication Date:
October 02, 2013
Filing Date:
June 15, 2011
Export Citation:
Assignee:
Nisshin Steel Co., Ltd.
International Classes:
H01M4/66; C22C38/00; C22C38/50; C22C38/58; C22C38/60; H01M4/133; H01M4/1393; C21D9/46
Domestic Patent References:
| JP2008098157A | ||||
| JP2000048823A | ||||
| JP2008293716A | ||||
| JP2008016456A |
Attorney, Agent or Firm:
Komatsu Taka
Kenji Wada
Kenji Wada
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