• 专利标题:   Preparing graphene-based compound micro-rods supported by positive active material comprises e.g. wet spinning the slurry and coagulating in rotating coagulation bath to obtain graphene oxide-based gel microrod, and annealing graphene oxide.
  • 专利号:   CN112652741-A, CN112652741-B
  • 发明人:   YU S, YANG J, MA T, ZHANG L, LIU Y
  • 专利权人:   UNIV CHINA SCI TECHNOLOGY
  • 国际专利分类:   H01M010/0525, H01M004/36, H01M004/58, H01M004/62
  • 专利详细信息:   CN112652741-A 13 Apr 2021 H01M-004/36 202145 Pages: 11 Chinese
  • 申请详细信息:   CN112652741-A CN10959181 10 Oct 2019
  • 优先权号:   CN10959181

▎ 摘  要

NOVELTY - Preparing graphene-based compound micro-rods supported by positive active material comprises (1) wet spinning the slurry and coagulating in rotating coagulation bath to obtain graphene oxide-based gel microrods, where the slurry comprises graphene oxide, anode active material and water, and (2) annealing the graphene oxide-based gel microrod in protective atmosphere to obtain graphene-based compound microrod supported by the anode active material. USE - The material is useful in lithium ion battery (claimed). ADVANTAGE - The material: has excellnt rod-like structure; uniformly distributes the anode active material in the micro-rod; realizes the high-content loading and onion roll coating of graphene on the anode active material; transports electrons between layers and conduct lithium ion between layers; promotes the rapid transport of charges during the cycle of the electrode active material; ensures good interface contact between the active material and the grapheme; and improves the rate performance of the battery.