Title:
ELECTROLYTIC COPPER FOIL, CURRENT COLLECTOR, ELECTRODE, AND LITHIUM ION SECONDARY BATTERY COMPRISING ELECTROLYTIC COPPER FOIL
Document Type and Number:
WIPO Patent Application WO/2020/156159
Kind Code:
A1
Abstract:
The present invention provides an electrolytic copper foil, a current collector, an electrode, and a lithium ion secondary battery comprising an electrolytic copper foil. The electrolytic copper foil comprises a deposited side and a drum side located on opposite sides. In a first embodiment, ΔRS of the deposited side and drum side of the electrolytic copper foil is at most about 95 MPa, and Vv of the deposited side is about 0.15 μm3/μm2 to 1.35 μm3/μm2. In a second embodiment, Sku of the deposited side of the electrolytic copper foil is about 1.5 to 6.5, and Vv of the deposited side is about 0.15 μm3/μm2 to 1.35 μm3/μm2. The characteristics above facilitate improving the quality of the electrolytic copper foil, thereby prolonging charging/discharging cycle life of the lithium ion secondary battery comprising the electrolytic copper foil.
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Inventors:
HUANG HUEI-FANG (CN)
LAI TING-CHUN (CN)
CHENG KUEI-SEN (CN)
CHOU JUI-CHANG (CN)
LAI YAO-SHENG (CN)
LAI TING-CHUN (CN)
CHENG KUEI-SEN (CN)
CHOU JUI-CHANG (CN)
LAI YAO-SHENG (CN)
Application Number:
PCT/CN2020/072158
Publication Date:
August 06, 2020
Filing Date:
January 15, 2020
Export Citation:
Assignee:
CHANG CHUN PETROCHEMICAL CO LTD (CN)
International Classes:
H01M4/66; C25D1/04; H01M4/62; H05K3/38
Foreign References:
| CN105986288A | 2016-10-05 | |||
| CN105986288A | 2016-10-05 | |||
| CN104812945A | 2015-07-29 | |||
| CN104812945A | 2015-07-29 | |||
| CN101669237A | 2010-03-10 | |||
| CN101098005A | 2008-01-02 | |||
| TWI417424B | 2013-12-01 | |||
| JP2012136736A | 2012-07-19 |
Other References:
See also references of EP 3828970A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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