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1. (WO2018034184) COPPER ALLOY FOIL

Pub. No.:    WO/2018/034184    International Application No.:    PCT/JP2017/028576
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Tue Aug 08 01:59:59 CEST 2017
IPC: C22C 9/02
H01M 4/66
C22F 1/00
C22F 1/02
C22F 1/08
Applicants: FURUKAWA ELECTRIC CO., LTD.
古河電気工業株式会社
UACJ FOIL CORPORATION
株式会社UACJ製箔産業
Inventors: NAKANO Junsuke
中野 淳介
HOSHINO Toshiyuki
星野 敏之
Title: COPPER ALLOY FOIL
Abstract:
The purpose of the present invention is to address the problem set forth in the description, by providing a copper alloy foil that exhibits both electrical conductivity and heat resistance. The present invention also provides a copper alloy foil that, when used for the negative electrode current collector of a secondary battery, exhibits an improved adherence to the active substance layer. The copper alloy foil contains 0.005 to 0.015 wt% Sn and has an oxygen content of not more than 0.0020 wt% with the remainder comprising Cu and unavoidable impurities. An Sn-rich layer is formed in at least one of the surface layers of the copper alloy foil.