Invention Grant
- Patent Title: Electrode with porous protective film, nonaqueous electrolyte secondary battery, and method for manufacturing electrode with porous protective film
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Application No.: US14972458Application Date: 2015-12-17
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Publication No.: US10020478B2Publication Date: 2018-07-10
- Inventor: Junichi Tadano
- Applicant: Sony Corporation
- Applicant Address: JP Kyoto
- Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: K&L Gates LLP
- Priority: JP2008-152469 20080611
- Main IPC: H01M2/16
- IPC: H01M2/16 ; H01M4/13 ; H01M4/139 ; H01M4/62 ; H01M10/05 ; H01M4/131

Abstract:
An electrode with a porous protective film includes an electrode in which an active material layer is disposed on a collector and a porous protective film which is disposed on a surface of the active material layer and which contains fine particles and a binder. The thickness of the porous protective film ranges from about 0.1 μm to about 200 μm. A nonaqueous electrolyte secondary battery includes a negative electrode in which a negative electrode active material layer is disposed on a negative electrode collector, a positive electrode, a nonaqueous electrolyte, a separator, and a porous protective film which is disposed on at least one of a surface of the negative electrode active material layer or a surface of the positive electrode active material layer and which contains fine particles and a binder. The thickness of the porous protective film ranges from about 0.1 μm to about 200 μm.
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