• 专利标题:   Preparation of graphene self-supporting material used in alkali metal ion battery material, involves mixing graphene oxide solution, carbon nanotube solution, metal crosslinking agent, reducing agent and ethanol, hydrothermally reacting, drying and molding.
  • 专利号:   CN116040616-A
  • 发明人:   JU Z, CAO X, ZHAO B, XING Z
  • 专利权人:   UNIV CHINA MINING TECHNOLOGY BEIJING
  • 国际专利分类:   C01B032/19, H01M010/0525, H01M010/054, H01M004/587
  • 专利详细信息:   CN116040616-A 02 May 2023 C01B-032/19 202350 Chinese
  • 申请详细信息:   CN116040616-A CN10103969 13 Feb 2023
  • 优先权号:   CN10103969

▎ 摘  要

NOVELTY - Preparation of graphene self-supporting material involves mixing graphene oxide solution, carbon nanotube solution, metal crosslinking agent, reducing agent and ethanol, hydrothermally reacting, drying and molding. USE - Preparation of graphene self-supporting material used in alkali metal ion battery negative electrode material (all claimed) e.g. sodium ion battery and potassium ion battery material for portable electronic product and power battery application. ADVANTAGE - The method is simple, economical, and dry pressing without wet slurry coating, and does not need to use metal current collector. The graphene self-supporting material has excellent electrochemical properties, and reversible area capacity of 9.2 mAh.cm-2, and is much more than the electrode sheet obtained by wet slurry coating.