Invention Grant
- Patent Title: Negative electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
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Application No.: US15565006Application Date: 2016-04-05
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Publication No.: US10559813B2Publication Date: 2020-02-11
- Inventor: Atsushi Saito , Tatsuya Eguchi , Manabu Miyoshi , Jun Kaneda , Tomokuni Abe , Hiroki Oshima
- Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
- Applicant Address: JP Kariya-shi, Aichi
- Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
- Current Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
- Current Assignee Address: JP Kariya-shi, Aichi
- Agency: Sughrue Mion, PLLC
- Priority: JP2015-080926 20150410
- International Application: PCT/JP2016/001915 WO 20160405
- International Announcement: WO2016/163115 WO 20161013
- Main IPC: H01M4/134
- IPC: H01M4/134 ; H01M4/587 ; H01M4/36 ; H01M4/62 ; H01M4/133 ; H01M4/38 ; H01M10/0525 ; H01M10/052 ; H01M4/02

Abstract:
The negative electrode includes a current collector, a negative electrode active material layer arranged on a surface of the current collector, and a protective layer arranged on a surface of the negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material having an aspect ratio defined as “a”/“b” to fall in a range of from two or more to eight or less when a length of the major axis is defined “a” and a length of the minor axis is defined “b.” The protective layer includes a ceramic powder.
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