ELECTROLYTIC COPPER FOIL, ELECTRODE OBTAINED USING SAID ELECTROLYTIC COPPER FOIL FOR LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY OBTAINED USING SAID ELECTRODE

WIPO Patent Application WO/2014/119582

A1

Provided is an electrolytic copper foil which has a tensile strength at ordinary temperature of 650 MPa or higher, a tensile strength measured at ordinary temperature after a 1-hour heat treatment at 300ºC of 450 MPa or higher, and an electrical conductivity of 60% or higher. The electrolytic copper foil is characterized by containing a metal which, in an acidic solution having a pH of 4 or less, is present as an oxide, and by containing chlorine in an amount of 0.005-0.04 wt%. The electrolytic copper foil contains at least one of Ti, Mo, V, Bi, and Te which has been incorporated thereinto, and has a tensile strength at ordinary temperature of 650 MPa or higher, a tensile strength measured at ordinary temperature after a 1-hour heat treatment at 300ºC of 450 MPa or higher, and an electrical conductivity of 60% IACS or higher. This electrolytic copper foil is suitable for use as a current collector for batteries.

FUJISAWA KIMIKO (JP)
SUZUKI AKITOSHI (JP)
SHINOZAKI KENSAKU (JP)
EBISUGI MASATO (JP)
EZURA TAKESHI (JP)

PCT/JP2014/051859

August 07, 2014

January 28, 2014

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FURUKAWA ELECTRIC CO LTD (JP)

C25D1/04; C22C9/00; C25D1/00; H01M4/64; H01M4/66

WO2013002279A1	2013-01-03
WO2013065699A1	2013-05-10

JP2012195192A	2012-10-11
JP2012054198A	2012-03-15
JPH07278867A	1995-10-24

SATOH, TAKAHISA (JP)
Takahisa Sato (JP)

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