• 专利标题:   Method for preparing graphene quantum dot/hard carbon heterojunction material of material cathode in potassium ion button cel, comprises performing heat treatment to cellulose under inert atmosphere and sealing condition, and applying pressure to the cellulose to obtain the material.
  • 专利号:   CN115172643-A
  • 发明人:   LIU H, LI Y, JI T, LIU X
  • 专利权人:   UNIV SHAANXI SCI TECHNOLOGY
  • 国际专利分类:   C01B032/184, H01M010/04, H01M010/054, H01M004/04, H01M004/587
  • 专利详细信息:   CN115172643-A 11 Oct 2022 H01M-004/04 202297 Chinese
  • 申请详细信息:   CN115172643-A CN10907961 29 Jul 2022
  • 优先权号:   CN10907961

▎ 摘  要

NOVELTY - The method involves (a) subjecting cellulose to heat treatment under an inert atmosphere and a sealed condition, and (b) applying pressure to the cellulose at a pressure of 100-500 Pa, where the heat treatment is carried out under the condition of heat treatment. USE - Method for preparing graphene quantum dot/hard carbon heterojunction material of a material cathode in a potassium ion button cell (all claimed). Uses include but are not limited to electronic device, sensor, secondary battery, catalytic and photoelectric detector. ADVANTAGE - The method has simple technique, flexible and controllable, high performance and high efficiency. The prepared graphene quantum dot/hard carbon heterojunction applied to the cathode ion buckle type battery of the material, the product performance is excellent. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene quantum dot/hard carbon heterojunction material of a material cathode in a potassium ion button cel.