• 专利标题:   Anode material used in anode for lithium-ion secondary battery, comprises composite made of silicon particles containing microcrystalline silicon and conductive carbon-based material, and silane coupling agent coated on surface of composite.
  • 专利号:   KR2021031563-A
  • 发明人:   PARK S, IMSUNGWOO, LIM J
  • 专利权人:   DAEJOO ELECTRONIC MATERIALS CO LTD
  • 国际专利分类:   H01M004/36, C01B032/21, C01B033/02, H01M010/052, H01M004/131, H01M004/134, H01M004/38, H01M004/48, H01M004/62
  • 专利详细信息:   KR2021031563-A 22 Mar 2021 H01M-004/36 202127 Pages: 15
  • 申请详细信息:   KR2021031563-A KR112646 11 Sep 2019
  • 优先权号:   KR112646

▎ 摘  要

NOVELTY - Anode material comprises composite made of silicon particles or silicon compound particles containing microcrystalline silicon, and a conductive carbon-based material; and a silane coupling agent coated on the surface of the composite. USE - The anode material is useful in anode for lithium-ion secondary battery (all claimed). ADVANTAGE - The anode material improves cycle characteristics by mitigating volume change in lithium adsorption/desorption process, adjusts battery design due to charge/discharge capacity in battery, and improves energy density while maintaining good cycle characteristics compared to existing anode material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) producing anode material comprising either: (a) mixing silicon particles or silicon compound particles including microcrystalline silicon, and conductive carbon-based material under a high shear force to form composite, and (b) adding and kneading an aqueous solution of silane coupling agent to the composite, or mixing silicon particles or silicon compound particles containing microcrystalline silicon, conductive carbon-based material, and aqueous solution of silane coupling agent under high shear force; (2) anode comprising anode material and current collector; and (3) lithium-ion secondary battery comprising cathode, anode, and electrolyte.