Invention Application
- Patent Title: SECONDARY BATTERY AND MANUFACTURING METHOD OF THE SAME
- Patent Title (中): 二次电池及其制造方法
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Application No.: US14921126Application Date: 2015-10-23
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Publication No.: US20160126541A1Publication Date: 2016-05-05
- Inventor: Junya GOTO , Mako MOTOYOSHI , Yuika SATO , Takahiro KAWAKAMI
- Applicant: Semiconductor Energy Laboratory Co., LTD.
- Priority: JP2014-217229 20141024
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/587 ; H01M4/04 ; H01M4/485 ; H01M4/131 ; H01M4/133
Abstract:
A negative electrode and a secondary battery including the negative electrode are provided. A plurality of projections and depressions are provided in a negative electrode active material layer and a negative electrode current collector. The plurality of projections and depressions in the negative electrode active material layer absorb expansion of the negative electrode active material and suppress deformation thereof. The plurality of projections and depressions in the negative electrode current collector suppress deformation of the negative electrode current collector caused by expansion and contraction of the negative electrode active material.
Public/Granted literature
- US10367194B2 Secondary battery and manufacturing method of the same Public/Granted day:2019-07-30
Information query
