• 专利标题:   Preparing lithium sulfur battery anode material comprises e.g. adding graphene, nitrogen-containing organic matter, transition metal salt and dispersant in aqueous solution, spray drying, calcining, ball-milling transition metal-doped graphene-carbon nanotube composite microspheres and sulfur powder.
  • 专利号:   CN114275775-A
  • 发明人:   FAN H, ZHAO C, ZHANG T, YANG X, GAO W, LIU Y
  • 专利权人:   ZHENGZHOU INST EMERGING IND TECHNOLOGY
  • 国际专利分类:   C01B017/02, C01B032/16, C01B032/194, H01M004/36, H01M004/62
  • 专利详细信息:   CN114275775-A 05 Apr 2022 C01B-032/194 202265 Chinese
  • 申请详细信息:   CN114275775-A CN11610489 27 Dec 2021
  • 优先权号:   CN11610489

▎ 摘  要

NOVELTY - Preparing lithium sulfur battery anode material comprises (a) adding the graphene, nitrogen-containing organic matter, transition metal salt and dispersant in aqueous solution, dispersing uniformly to obtain suspension, (b) spray drying the suspension, (c) calcining the material obtained after spray drying at a high temperature in an argon atmosphere to obtain transition metal-doped graphene-carbon nanotube composite microspheres, and (d) placing the transition metal-doped graphene-carbon nanotube composite microspheres and sulfur powder in a ball-milling jar for ball-milling, placing in a reactor filled with argon to react. USE - The method is useful for preparing lithium sulfur battery anode material. ADVANTAGE - The method uses simple raw materials to realize the in-situ growth of carbon nanotubes on graphene nanosheets by a spray drying method. The prepared lithium-sulfur battery cathode material solves the shuttle effect of lithium polysulfides (LiPSs), has good cycle performance, and the preparation method is simple, easy to implement, and easy to mass-produce. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for lithium sulfur battery anode material prepared by the above-mentioned method.