ELECTROLYTIC COPPER FOIL, NEGATIVE POLE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY

Japanese Patent JP2014009364

A

To provide electrolytic copper foil having increased tensile strength and electric conductivity, and to provide a lithium secondary battery with the electrolytic copper foil as a collector for a negative pole.

The electrolytic copper foil is characterized in that, in an observed image with a transmission electron microscope (TEM), the ratio of the area occupied by the crystal grains with a grain size of 5 to 25 nm to the area occupied by the crystal grains with a grain size of 200 to 500 nm is 1 to 5. Further, in the electrolytic copper foil, in an observed image with the transmission electron microscope (TEM), the ratio of the area occupied by the crystal grains other than the crystal grains with a grain size of 5 to 25 nm and the crystal grains with a grain size of 200 to 500 nm is 10% or lower of all the grains.

JP6667840	Manufacturing method of electrolytic copper foil
WO/2004/009876	COPPER ELECTROLYTE COMPRISING AMINE COMPOUND HAVING SPECIFIC SKELETON AND ORGANIC SULFUR COMPOUND AND ELECTROLYTIC COPPER FOIL PREPARED USING THE SAME
JP4549774	Manufacturing method of electrolytic copper foil

TACHIBANA AKIRA
FUJISAWA KIMIKO
SHINOZAKI KENSAKU
SUZUKI AKITOSHI

JP2012144610A

January 20, 2014

June 27, 2012

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FURUKAWA ELECTRIC CO LTD

C25D1/04; C25D1/00; H01M4/66

JP2001123289A	2001-05-08
JP2001123290A	2001-05-08
JPH0853789A	1996-02-27
JPH04501887A	1992-04-02
JPH09306504A	1997-11-28
JPH05502062A	1993-04-15
JP2007294923A	2007-11-08

WO2011090044A1

2011-07-28

Takahisa Sato

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