Invention Grant
- Patent Title: Negative electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
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Application No.: US15324951Application Date: 2015-08-27
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Publication No.: US11043665B2Publication Date: 2021-06-22
- Inventor: Hiroshi Minami , Kouhei Tuduki , Atsushi Fukui , Taizou Sunano , Yoshio Kato
- Applicant: SANYO Electric Co., Ltd.
- Applicant Address: JP Daito
- Assignee: SANYO Electric Co., Ltd.
- Current Assignee: SANYO Electric Co., Ltd.
- Current Assignee Address: JP Daito
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JPJP2014-179344 20140903,JPJP2015-014158 20150128
- International Application: PCT/JP2015/004310 WO 20150827
- International Announcement: WO2016/035290 WO 20160310
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/38 ; H01M4/48 ; H01M4/485 ; H01M4/58 ; H01M4/02
Abstract:
In a nonaqueous electrolyte secondary battery containing a silicon material as a negative electrode active material, the initial charge-discharge efficiency is improved. Negative electrode active material particles (10) according to an embodiment each contain a lithium silicate phase (11) represented by Li2zSiO(2+z) (where 0
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