Title:
ELECTROLYTIC COPPER FOIL, AND LITHIUM ION SECONDARY BATTERY USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/078125
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an electrolytic copper foil suitable as a copper foil for lithium ion secondary batteries, which has high durability against stress associated with charging and discharging as in the case with lithium ion secondary batteries and which is required to have good battery characteristics. The electrolytic copper foil is characterized by having a tensile strength (Ts(50)) of 450 MPa or more at a rate of elongation of 50 mm/min under normal conditions, and a tensile strength (Ts(0.1)) of 400 MPa or more at a rate of elongation of 0.1 mm/min under normal conditions, and in that the ratio of the two tensile strengths, Ts(0.1)/Ts(50), is 0.70 or more.
Inventors:
SHINOZAKI JUN (JP)
EBISUGI MASATO (JP)
FUJISAWA KIMIKO (JP)
EBISUGI MASATO (JP)
FUJISAWA KIMIKO (JP)
Application Number:
PCT/JP2016/082761
Publication Date:
May 11, 2017
Filing Date:
November 04, 2016
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
C25D1/04; H01M4/66
Domestic Patent References:
| WO2008132987A1 | 2008-11-06 |
Foreign References:
| JP2013185228A | 2013-09-19 | |||
| JP2001342589A | 2001-12-14 | |||
| JPS63310990A | 1988-12-19 | |||
| JPH0488185A | 1992-03-23 | |||
| JP2000182623A | 2000-06-30 | |||
| JP2006299320A | 2006-11-02 |
Attorney, Agent or Firm:
SK INTELLECTUAL PROPERTY LAW FIRM et al. (JP)
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