• 专利标题:   Producing sulfur-carbon composite material for lithium-sulfur battery electrode, by preparing sulfur solution in solvent different from carbon disulfide, operating, dispersing carbon particles in finely divided form in solution and drying.
  • 专利号:   WO2021048815-A1, EP4029070-A1, US2022320491-A1
  • 发明人:   CARBONE L, VENEZIA E, PELLEGRINI V, BONACCORSO F
  • 专利权人:   FOND IST ITAL DI TECNOLOGIA, FOND IST ITAL DI TECNOLOGIA, FOND IST ITAL DI TECNOLOGIA
  • 国际专利分类:   H01M004/13, H01M004/38, C01B032/00, H01M004/62, H01M004/66, H01M004/583, H01M010/052, H01M004/133, H01M004/36
  • 专利详细信息:   WO2021048815-A1 18 Mar 2021 202127 Pages: 24 English
  • 申请详细信息:   WO2021048815-A1 WOIB058472 11 Sep 2020
  • 优先权号:   IT00016178

▎ 摘  要

NOVELTY - Process for producing sulfur-carbon composite material, involves (a) preparing a sulfur solution in a solvent different from carbon disulfide and having a boiling temperature lower than the melting temperature of sulfur, and operating at a temperature of 15 degrees C and the boiling temperature of the solvent, (b) dispersing carbon particles in a finely divided form in the solution of step (a) in an amount such as to obtain a sulfur/carbon weight ratio of 9-20, and (c) drying the solution with a solvent evaporation rate less than or equal to 0.08 l/hour. USE - The process is used for producing sulfur-carbon composite material for lithium-sulfur battery electrode (all claimed). ADVANTAGE - The process is environmentally-friendly processes that allow mass production and reduce environmental risks in the use of sustainable low-impact resources. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a sulfur-carbon composite material obtained by the above method; and (2) a lithium-sulfur battery electrode is formed by a mixture of particles of the sulfur-carbon composite material, polyvinylidene-fluoride as a binder and carbon black, where the mixture is being distributed on a current collector chosen from an aluminum sheet or a carbon fabric as an electrode.