• 专利标题:   Halide-doped carbon/sulfur material useful for forming anode for lithium-sulfur battery, comprises conductive carbon-based material, and halide crystal and elemental sulfur which are dispersed in conductive carbon-based material.
  • 专利号:   CN113871607-A
  • 发明人:   ZHANG H, LIU Y, WANG Z, KANG H, ZHANG J
  • 专利权人:   UNIV CHANGZHOU
  • 国际专利分类:   H01M004/38, H01M004/62
  • 专利详细信息:   CN113871607-A 31 Dec 2021 H01M-004/38 202226 Chinese
  • 申请详细信息:   CN113871607-A CN11068014 13 Sep 2021
  • 优先权号:   CN11068014

▎ 摘  要

NOVELTY - A halide-doped carbon/sulfur anode material comprises a halide crystal, a conductive carbon-based material, and elemental sulfur. The elemental sulfur and the halide crystal are dispersed in the conductive carbon-based material. USE - The halide-doped carbon/sulfur material is useful for forming anode for lithium-sulfur battery (claimed). ADVANTAGE - The halide-doped carbon/sulfur anode material has improved conductivity by doping and modifying the carbon/sulfur composite material with halide, and improves charging/discharging capacity and cycle stability of the lithium-sulfur battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the halide-doped carbon/sulfur anode material, which involves (i) dissolving halide in water to obtain a halide aqueous solution, (ii) mixing an oil phase, a surfactant and the halide aqueous solution and emulsifying, (iii) adding the conductive carbon-based material to the emulsified system and stirring the obtained microemulsion system, heating in a water bath while stirring the microemulsion system, drying and calcining to obtain a halide-doped conductive carbon-based material, (iv) mixing sublimated sulfur with the halide-doped conductive carbon-based material, and (v) calcining in a nitrogen atmosphere to sublime and diffuse the sublimated sulfur.