• 专利标题:   Sulfur-carbon composite used in positive electrode used for lithium-sulfur battery, comprises porous carbon material and sulfur in specific portion of interior and surface of porous carbon material, where porous carbon material has specific electrical conductivity at specific powder density.
  • 专利号:   WO2022149913-A1, KR2022100209-A, EP4199148-A1, CN116250099-A
  • 发明人:   KIM I, LEE C, KIM I T, LI C, JIN R
  • 专利权人:   LG ENERGY SOLUTION LTD, LG ENERGY SOLUTION LTD
  • 国际专利分类:   H01M010/052, H01M004/02, H01M004/36, H01M004/38, H01M004/62
  • 专利详细信息:   WO2022149913-A1 14 Jul 2022 H01M-004/36 202263 Pages: 31
  • 申请详细信息:   WO2022149913-A1 WOKR000313 07 Jan 2022
  • 优先权号:   KR002360, CN80006577

▎ 摘  要

NOVELTY - Sulfur-carbon composite comprises a porous carbon material and sulfur in at least a portion of the interior and surface of the porous carbon material, where the porous carbon material has an electrical conductivity of greater than or equal to 24.5 S/cm at a powder density of 0.58 g/cc. USE - The composite is useful in a positive electrode used for a lithium-sulfur battery. ADVANTAGE - The composite is superb in terms of electrochemical reactivity, can provide a lithium-sulfur battery including same can be made to have high capacity, high output and longevity and improves overvoltage of the battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for manufacturing the composite involving (a) heat-treating the porous carbon material under an inert gas atmosphere and (b) mixing the heat-treated porous carbon material with sulfur to obtain the product; (2) a positive electrode for a lithium-sulfur battery comprising the composite; and (3) the lithium-sulfur battery comprising the positive electrode for the lithium-sulfur battery, a negative electrode comprising a negative electrode active material and an electrolyte.