- Patent Title: Multilayer anode and lithium secondary battery including the same
-
Application No.: US17898570Application Date: 2022-08-30
-
Publication No.: US11777086B2Publication Date: 2023-10-03
- Inventor: Byoung Wook Jo , Jae Kyu Jin
- Applicant: SK Innovation Co., Ltd.
- Applicant Address: KR Seoul
- Assignee: SK ON CO., LTD.
- Current Assignee: SK ON CO., LTD.
- Current Assignee Address: KR Seoul
- Agency: IP & T GROUP LLP
- Priority: KR 20180110336 2018.09.14
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/587 ; H01M10/0525 ; H01M4/02

Abstract:
A multilayer anode includes an anode collector, and a plurality of anode mixture layers sequentially stacked on at least one surface of the anode collector, and including natural graphite as an anode active material. A weight ratio of the natural graphite in innermost and outermost anode mixture layers is greater than a weight ratio of the natural graphite in an anode mixture layer located between the innermost and outermost anode mixture layers, in a stacking direction of the plurality of anode mixture layers. Performance of a cell may be improved and calendering-calender contamination occurring in a calendering process and an electrode stripping phenomenon may be prevented.
Public/Granted literature
- US20220416233A1 MULTILAYER ANODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME Public/Granted day:2022-12-29
Information query