• 专利标题:   Manufacturing secondary battery anode material for coating on current collector comprises surface-modifying silicon particles with alkoxysilane-based surface modifier, dispersing, freeze-drying and calcining.
  • 专利号:   KR2021078635-A, KR2276657-B1
  • 发明人:   PARKSUNGHEE
  • 专利权人:   UNIV WOOSONG
  • 国际专利分类:   C01B032/168, C01B032/198, C01B033/02, H01M004/04, H01M004/1393, H01M004/1395, H01M004/36, H01M004/38, H01M004/583, H01M004/587, H01M004/62
  • 专利详细信息:   KR2021078635-A 29 Jun 2021 H01M-004/36 202159 Pages: 19
  • 申请详细信息:   KR2021078635-A KR170003 18 Dec 2019
  • 优先权号:   KR170003

▎ 摘  要

NOVELTY - Manufacturing secondary battery anode material with graphene-carbon nanotube-silicon-containing composite material comprises performing surface-modification of silicon particles with an alkoxysilane-based surface modifier to obtain silicon particles surface-modified with alkoxysilane-based surface modifier, ultrasonically dispersing silicon particles surface-modified with alkoxysilane-based surface modifier, graphene oxide, carbon nanotubes and lithium titanate in a solvent, then freeze-drying and crushing to obtain a graphene-carbon nanotube-silicon composite material powder, calcining the graphene-carbon nanotube-silicon composite material powder, cooling and mixing with a fluorine-based polymer. USE - The anode material is useful for coating on a current collector by electrospray method (claimed). ADVANTAGE - The anode material: is economical; and has higher electrical conductivity, excellent mechanical strength and high stability i.e. reduction in volume expansion rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-carbon nanotube-silicon-containing composite secondary battery anode material.