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  • 专利标题:   Preparation of graphene doped cathode material for lithium ion battery, involves adding cathode material powder into liquid polyacrylonitrile solution, calcining, forming into similar structure of graphene, and dispersing.
  • 专利号:   CN102074692-A, WO2012089085-A1, US2013277620-A1, EP2660904-A1, CN102074692-B, JP2014504436-W, JP5732545-B2, US9123953-B2, EP2660904-A4
  • 发明人:   LIU J, ZHANG Q, GUI D, HE C, ZHU C
  • 专利权人:   UNIV SHENZHEN, LIU J, GUI D, ZHANG Q, HE C, ZHU C, UNIV SHENZHEN
  • 国际专利分类:   H01M004/1399, H01M004/62, H01M004/36, H01M004/485, H01M004/505, H01M004/525, H01M004/58, H01M004/131, H01M004/1391, H01M004/88
  • 专利详细信息:   CN102074692-A 25 May 2011 H01M-004/1399 201153 Pages: 7 Chinese
  • 申请详细信息:   CN102074692-A CN10618690 31 Dec 2010
  • 优先权号:   CN10618690, WOCN084676

▎ 摘　　要

NOVELTY - A graphene doped cathode material for lithium ion battery is prepared by stirring a liquid polyacrylonitrile (LPAN) for 8-72 hours at 80-300 degrees C, forming micro-cyclizing LPAN solution, adding a cathode material powder of lithium ion battery into the solution, mixing, drying after grinding, calcining for 6-24 hours at 500-1800 degrees C in the presence of inert atmosphere, forming the solution into the similar structure of graphene, and dispersing in the cathode material of lithium ion battery. USE - Method for preparing graphene doped cathode material for lithium ion battery (claimed). ADVANTAGE - The graphene doped cathode material has high conductivity and high specific capacity. The circulating performance is improved.