• 专利标题:   Graphene oxide having specific weight ratio of oxygen to carbon, used as raw material of conductive additive in positive electrode for a non-aqueous secondary battery.
  • 专利号:   US2016204440-A1
  • 发明人:   TODORIKI H, YUKAWA M, SAITO Y, YAMAKAJI M, YATABE R, IKENUMA T
  • 专利权人:   SEMICONDUCTOR ENERGY LAB
  • 国际专利分类:   C01B031/04, H01M010/052, H01M004/36, H01M004/58, H01M004/62
  • 专利详细信息:   US2016204440-A1 14 Jul 2016 H01M-004/62 201650 Pages: 44 English
  • 申请详细信息:   US2016204440-A1 US075387 21 Mar 2016
  • 优先权号:   JP089346, JP125138

▎ 摘  要

NOVELTY - Graphene oxide having a weight ratio of oxygen to carbon of greater than or equal to 0.405, is claimed. USE - The graphene oxide is useful: as a raw material of a conductive additive in a positive electrode for a non-aqueous secondary battery, where the non-aqueous secondary battery is used in electronic device (all claimed) e.g. display devices of televisions, monitors, lighting devices, desktop personal computers and laptop personal computers, word processors, portable compact disc players, radio receivers, tape recorders and headphone stereos. ADVANTAGE - The graphene oxide: provides the positive electrode active material layer exhibiting excellent electron conductivity; exhibits high dispersibility in dispersion medium utilized in manufacture of positive electrode; exhibits high capacity per volume and small volume expansion, and is economical and safer than lithium metal; and provides the secondary battery exhibiting increased discharge capacity and good cycle characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a positive electrode for a non-aqueous secondary battery comprising an active material layer over a current collector, where the active material layer comprises active material particles, a conductive additive including graphene, and a binding agent, where the bonding states of carbon included in the active material layer has carbon-carbon double bond proportion of greater than or equal to 35% and carbon-oxygen bond proportion of 5-20%.