Invention Grant
- Patent Title: Graphene oxide, positive electrode for nonaqueous secondary battery using graphene oxide, method of manufacturing positive electrode for nonaqueous secondary battery, nonaqueous secondary battery, and electronic device
- Patent Title (中): 氧化石墨烯，使用氧化石墨烯的非水系二次电池用正极，制造非水系二次电池用正极的方法，非水系二次电池，电子装置
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Application No.: US13826710Application Date: 2013-03-14
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Publication No.: US09293770B2Publication Date: 2016-03-22
- Inventor: Hiroatsu Todoriki , Mikio Yukawa , Yumiko Saito , Masaki Yamakaji , Rika Yatabe , Tatsuya Ikenuma
- Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Applicant Address: JP Kanagawa-ken
- Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Current Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Current Assignee Address: JP Kanagawa-ken
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP2012-089346 20120410; JP2012-125138 20120531
- Main IPC: H01M4/62
- IPC: H01M4/62 ; H01M4/133 ; H01M4/64 ; H01M4/131 ; H01M4/136 ; H01M4/58 ; C01B31/04 ; H01M4/36
Abstract:
A graphene oxide used as a raw material of a conductive additive for forming an active material layer with high electron conductivity with a small amount of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery using the graphene oxide as a conductive additive is provided. The graphene oxide is used as a raw material of a conductive additive in a positive electrode for a nonaqueous secondary battery and, in the graphene oxide, the atomic ratio of oxygen to carbon is greater than or equal to 0.405.
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