Title:
ANODE FOR SECONDARY BATTERY, HAVING OPTIMIZED BINDER DISTRIBUTION, AND SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/046026
Kind Code:
A1
Abstract:
The present invention relates to an anode for a non-aqueous electrolyte secondary battery, comprising: an anode current collector; and an anode mixture layer formed on the anode current collector, the anode mixture layer containing an anode active material, a conductor, a rubber-based binder, and a water-soluble polymer-based binder, wherein the anode mixture layer comprises, relative to a total weight thereof, 1.0-2.5 wt% of the rubber-based binder and 0.5-1.5 wt% of the water-soluble polymer-based binder, and wherein when the anode mixture layer is divided into ten equal parts in the thickness direction based on the current collector, the ratio (C A) of the content of the rubber-based binder in the section between 0 and 3 to the total content of the rubber-based binder compared to the ratio (C B) of the content of the water-soluble polymer-based binder in the section between 0 and 3 to the total content of the water-soluble polymer-based binder, that is, C A/C B, is more than 1.0, while in the section between 7 to 10, C A/C B is less than 1.0.
Inventors:
JO BYOUNG-WOOK (KR)
JANG HYUN-JOONG (KR)
KIM MIN-HWAN (KR)
JANG HYUN-JOONG (KR)
KIM MIN-HWAN (KR)
Application Number:
PCT/KR2019/011104
Publication Date:
March 05, 2020
Filing Date:
August 30, 2019
Export Citation:
Assignee:
SK INNOVATION CO LTD (KR)
International Classes:
H01M4/13; H01M4/131; H01M4/133; H01M4/62; H01M10/052
Domestic Patent References:
| WO2015098021A1 | 2015-07-02 | |||
| WO2015115051A1 | 2015-08-06 |
Foreign References:
| JP2014120330A | 2014-06-30 | |||
| US20090202907A1 | 2009-08-13 | |||
| KR20100112127A | 2010-10-18 | |||
| JPS6128481B2 | 1986-06-30 |
Other References:
See also references of EP 3846250A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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