• 专利标题:   Manufacturing graphene mxene-silicon-containing composite secondary battery cathode material comprises surface-modifying the silicon particle with alkoxysilane-based surface modifier, ultrasonically dispersing, freeze-drying and pulverizing.
  • 专利号:   KR2021079442-A, KR2276658-B1
  • 发明人:   PARKSUNGHEE
  • 专利权人:   UNIV WOOSONG
  • 国际专利分类:   C01B032/198, C01B032/921, C01B033/02, H01M004/04, H01M004/1393, H01M004/1395, H01M004/36, H01M004/38, H01M004/583, H01M004/587, H01M004/62
  • 专利详细信息:   KR2021079442-A 30 Jun 2021 H01M-004/36 202161 Pages: 19
  • 申请详细信息:   KR2021079442-A KR170480 19 Dec 2019
  • 优先权号:   KR170480

▎ 摘  要

NOVELTY - Manufacturing graphene mxene-silicon-containing composite secondary battery cathode material, comprises surface-modifying the silicon particles with an alkoxysilane-based surface modifier to obtain silicon particles surface-modified with an alkoxysilane-based surface modifier; ultrasonically dispersing the silicon particles surface-modified with the alkoxysilane-based surface modifier, graphene oxide, Ti3C2Tx (mxene: transition metal carbide material) and lithium titanate in a solvent, and freeze-drying and pulverizing to obtain graphene-mxene-silicon composite material powder; and calcining the graphene-mxene-silicon composite material powder, cooling and mixing with a fluorine-based polymer. USE - The graphene-mxene-silicon-containing composite secondary battery cathode material is useful for applying on a current collector using electrospray method (claimed). ADVANTAGE - The graphene-mxene-silicon-containing composite secondary battery cathode material has high electrical conductivity, excellent mechanical strength, high stability e.g. reduction in volume expansion rate and high charge-discharge capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-mxene-silicon-containing composite secondary battery cathode material produced by above method.