Invention Grant
- Patent Title: Nonaqueous electrolyte secondary battery
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Application No.: US15509641Application Date: 2015-09-08
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Publication No.: US10651460B2Publication Date: 2020-05-12
- Inventor: Hiroya Umeyama , Keiichi Takahashi , Shuji Tsutsumi , Tatsuya Hashimoto
- Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Applicant Address: JP Toyota
- Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Toyota
- Agency: Oliff PLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@73f82bfd
- International Application: PCT/IB2015/001557 WO 20150908
- International Announcement: WO2016/038440 WO 20160317
- Main IPC: H01M4/02
- IPC: H01M4/02 ; H01M4/131 ; H01M4/36 ; H01M4/505 ; H01M4/525 ; H01M4/58 ; H01M4/62 ; H01M10/052 ; H01M10/0567 ; H01M10/42 ; H01M2/16 ; H01M10/0525

Abstract:
A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a positive electrode current collector, a first positive electrode mixture layer that is provided on the positive electrode current collector, and a second positive electrode mixture layer that is provided on the first positive electrode mixture layer. The first positive electrode mixture layer includes a first positive electrode active material and a first conductive material. The second positive electrode mixture layer includes a second positive electrode active material and a second conductive material. The first positive electrode active material includes a lithium composite oxide having a layered crystal structure. The second positive electrode active material includes a lithium composite phosphate having an olivine-type crystal structure. The second conductive material includes a conductive material having a higher crushing strength than the lithium composite phosphate having an olivine-type crystal structure.
Public/Granted literature
- US20170256788A1 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2017-09-07
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