Invention Grant
- Patent Title: Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
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Application No.: US14632157Application Date: 2015-02-26
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Publication No.: US09728779B2Publication Date: 2017-08-08
- Inventor: Takakazu Hirose , Hiromichi Kamo , Hiroki Yoshikawa , Reiko Sakai
- Applicant: SHIN-ETSU CHEMICAL CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2014-76211 20140402
- Main IPC: H01M4/485
- IPC: H01M4/485 ; H01M10/052 ; H01M4/36 ; H01M4/48 ; H01M4/136 ; H01M4/58 ; H01M4/587 ; H01M4/62 ; H01M4/02

Abstract:
The present invention provides a negative electrode for a non-aqueous electrolyte secondary battery, the negative electrode comprising a negative electrode active material layer containing: negative electrode active materials including carbon active material and silicon active material composed of SiOx at least partially coated with lithium carbonate where 0.5≦x≦1.6; and binders including carboxymethyl cellulose or metal salt thereof, polyacrylic acid or metal salt thereof, and styrene-butadiene rubber or polyvinylidene fluoride, and a non-aqueous electrolyte secondary battery including this negative electrode. The negative electrode can increase the battery capacity and improve the cycle performance and first charge and discharge efficiency.
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