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  • 专利标题:   New graphene oxide, useful as a raw material of a conductive additive in a positive electrode for a nonaqueous secondary battery, and electronic devices.
  • 专利号:   US2013266859-A1, WO2013153931-A1, JP2014007141-A, TW201348128-A, US9293770-B2, JP2017022147-A, JP6077347-B2, JP2017031055-A, JP6110990-B2, JP6117983-B2, TW201716324-A, JP2017147233-A, TW596060-B1, TW622555-B1, JP6423472-B2, JP2019016610-A
  • 发明人:   TODORIKI H, YUKAWA M, SAITO Y, YAMAKAJI M, YATABE R, IKENUMA T, TODOROKI H, YUGAWA M, YONEDA Y, TSUKUDA R
  • 专利权人:   SEMICONDUCTOR ENERGY LAB, SEMICONDUCTOR ENERGY LAB, SEMICONDUCTOR ENERGY LAB
  • 国际专利分类:   H01M004/131, H01M004/133, H01M004/62, H01M004/64, C01B025/45, C01B031/00, H01M004/13, H01M004/136, H01M004/139, H01M004/1397, H01M004/58, C01B031/02, C01B031/04, H01M010/05, H01M004/1391, H01M004/36, H01M004/525, B82B001/00, C01B032/15, C01B032/18, C01B032/182, H01B001/04, C01B032/20, H01M004/02, C01B032/198
  • 专利详细信息:   US2013266859-A1 10 Oct 2013 H01M-004/62 201370 Pages: 44 English
  • 申请详细信息:   US2013266859-A1 US826710 14 Mar 2013
  • 优先权号:   JP089346, JP125138

▎ 摘　　要

NOVELTY - Graphene oxide, is new, where a weight ratio of oxygen to carbon in the graphene oxide is greater than or equal to 0.405. USE - The graphene oxide is useful as a raw material of a conductive additive in a positive electrode for a nonaqueous secondary battery, and electronic devices (all claimed). ADVANTAGE - The graphene oxide provides field-effect transistors with high mobility, highly sensitive sensors, highly-efficient solar cells, and next generation transparent conductive films; and has excellent electrical, mechanical, and chemical characteristics. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a positive electrode for a nonaqueous secondary battery, comprising an active material layer over a current collector, where the active material layer comprises active material particles, a conductive additive comprising graphenes and a binding agent, where, as bonding states of carbon included in the active material layer, a proportion of a C=C bond is 35% or more and a proportion of a C-O bond is 5-20%; (2) a nonaqueous secondary battery comprising the positive electrode for a nonaqueous secondary battery; (3) an electronic device comprising the nonaqueous secondary battery; and (4) manufacturing a positive electrode for a nonaqueous secondary battery, comprising forming a paste including a dispersion medium, an active material, a graphene oxide and a binding agent, where a weight ratio of oxygen to carbon in the graphene oxide is 0.405 or more, applying the paste on a current collector, and reducing the graphene oxide after or at the same time when the dispersion medium included in the applied paste is volatilized, where the active material layer comprising the graphene is formed over the current collector. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a laminated secondary battery. Positive electrode current collector (501) Positive electrode active material layer (502) Negative electrode current collector (504) Negative electrode active material layer (505) Negative electrode. (506)