• 专利标题:   Lithium sulfur battery anode composite material useful for improving conductivity of anode and lithium polysulfide, comprises graphene micro sheet, multiple lithium sulfide powder, polyimide solution and organic carbon source.
  • 专利号:   CN107403916-A
  • 发明人:   FENG Y, LI S
  • 专利权人:   GUIZHOU DINGXI MATERIALS HIGH TECH CO
  • 国际专利分类:   B82Y030/00, B82Y040/00, H01M010/052, H01M004/36, H01M004/58, H01M004/62
  • 专利详细信息:   CN107403916-A 28 Nov 2017 H01M-004/36 201801 Pages: 8 Chinese
  • 申请详细信息:   CN107403916-A CN10594688 14 Jul 2017
  • 优先权号:   CN10594688

▎ 摘  要

NOVELTY - Lithium sulfur battery anode composite material comprises 1-2 pts. wt. graphene micro sheet, 6-8 pts. wt. multiple lithium sulfide powder, 1 pt. wt. polyimide solution and 5-10 pts. wt. organic carbon source aqueous solution, where organic carbon source aqueous solution has organic carbon source content of 3-15%. USE - The composite material is useful for improving conductivity of anode and lithium polysulfide. ADVANTAGE - The composite material prevents generation of polysulfide dissolved in the electrolyte, and improves circulation time of the electrode, and rate characteristics of the electrode. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing lithium sulfur battery anode composite material comprising (i) mixing graphene micro sheet, adding organic carbon source aqueous solution, uniformly mixing, and then ultrasonic dispersing, (ii) adding polysulfide lithium powder, stirring and mixing uniformly, passing carbide forms ion channels with core-shell structure under nitrogen atmosphere to obtain material I, and (iii) mixing the material I with polyimide solution prepared in the step (ii), and stirring uniformly to obtain slurry, uniformly coating the slurry on the battery anode region, drying and then imidizing to obtain final product.