- Patent Title: Positive electrode for lithium ion secondary battery, graphene/positive electrode active material composite particles, manufacturing methods for same, and positive electrode paste for lithium ion secondary battery
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Application No.: US15763480Application Date: 2016-09-29
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Publication No.: US10826054B2Publication Date: 2020-11-03
- Inventor: Takashi Konishi , Eiichiro Tamaki , Manabu Kawasaki , Koki Miyazono
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@4f6b0a5f
- International Application: PCT/JP2016/078811 WO 20160929
- International Announcement: WO2017/061323 WO 20170413
- Main IPC: H01M4/131
- IPC: H01M4/131 ; H01M4/525 ; H01M4/13 ; H01M4/36 ; H01M4/139 ; H01M4/62 ; H01M4/133 ; H01M4/1391 ; H01M4/505 ; H01M10/0525
Abstract:
An object of the present invention is to improve the electron conductivity and ion conductivity of the surface of a positive electrode active material to provide a lithium ion battery having high capacity and high output. The present invention relates to a positive electrode for a lithium ion secondary battery, including a mixture layer containing a positive electrode active material for a lithium ion secondary battery and graphene, wherein the mixture layer has a percentage of abundance of silicon composing a siloxane bond in total elements of 0.4 atomic % or more as measured by X-ray photoelectron spectroscopy.
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