• 专利标题:   Producing core-shell composite used for electrodes in secondary batteries, comprises e.g. preparing active material paste by mixing hydrophobic particles and alcohol, and preparing spray solution by mixing dough with hydrophilic graphene.
  • 专利号:   KR2023071243-A
  • 发明人:   YANG S, LEE G, JEONG S, KIM I, JUNG S Y, KIM B, RYUJIHYUN, LEE H, BAEK J G
  • 专利权人:   KOREA ELECTRO TECHNOLOGY RES INST
  • 国际专利分类:   B01J013/04, C01B032/05, C01B032/194, C01B032/21, H01G011/38, H01M004/36, H01M004/583, H01M004/62
  • 专利详细信息:   KR2023071243-A 23 May 2023 B01J-013/04 202347 Pages: 16
  • 申请详细信息:   KR2023071243-A KR157220 16 Nov 2021
  • 优先权号:   KR157220

▎ 摘  要

NOVELTY - Producing core-shell composite, comprises (a) preparing an active material paste by mixing hydrophobic particles and alcohol; (b) preparing a spray solution by mixing the active material dough with hydrophilic graphene based on an aqueous solvent; and (c) spray-drying the spray solution to prepare a core-shell composite coated with the hydrophilic graphene on the surface of the hydrophobic particles. USE - The core-shell composite is useful for electrodes in secondary batteries. ADVANTAGE - The core-shell composite: has improved efficiency, electrical conductivity, structural stability, surface stabilization and cycle characteristics; maintains high capacity while improving reversibility of batteries; prevent layer separation; can be mass-produced in simpler process; suppress side reactions; provides high capacity, long lifespan, and high stability electrochemical properties to batteries; and promotes performance of batteries. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for core-shell composite comprising hydrophobic particles disposed as cores; and hydrophilic graphene coated on the outside of the hydrophobic particle and disposed as a shell.