• 专利标题:   Reduced porous graphene oxide used for sulfur-carbon composite for forming anode for lithium secondary battery e.g. lithium-sulfur battery, comprises pores with preset size.
  • 专利号:   WO2021141455-A1, KR2021090483-A, CN114585588-A, EP4043396-A1, US2022388850-A1, EP4043396-A4, JP2023501558-W
  • 发明人:   YANG S, SOHN K, SUN Q
  • 专利权人:   LG ENERGY SOLUTION LTD, LG ENERGY SOLUTION LTD, LG ENERGY SOLUTION LTD
  • 国际专利分类:   C01B032/198, H01M010/052, H01M004/36, H01M004/38, H01M004/62, H01M004/583, H01M010/36, C01B032/184, H01M010/0566
  • 专利详细信息:   WO2021141455-A1 15 Jul 2021 202164 Pages: 35
  • 申请详细信息:   WO2021141455-A1 WOKR000280 08 Jan 2021
  • 优先权号:   KR003829, WOKR000280, CN80005949

▎ 摘  要

NOVELTY - A reduced porous graphene oxide comprises pores with size of 2-500 nm. USE - Reduced porous graphene oxide used for sulfur-carbon composite for anode for lithium secondary battery e.g. lithium-sulfur battery (all claimed). ADVANTAGE - The reduced porous graphene oxide has excellent mass transfer ability, and electrolyte wettability, and increased amount of sulfur, and provides lithium secondary battery having reactivity, initial discharge capacity, and charging/discharging characteristics. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of reduced porous graphene oxide, which involves (a) preparing a dispersion in which the template particles and graphene oxide are mixed, (b) spray-drying the dispersion to prepare a template particle-graphene oxide composite, and (c) preparing a porous reduced graphene oxide by heat-treating the template particle-graphene oxide complex, in which the porous reduced graphene oxide comprises meso and macropores having size of 2-500 nm; (2) a sulfur-carbon composite, which comprises the reduced porous graphene oxide, and sulfur on at least a portion of the interior and surface of the porous reduced graphene oxide; and (3) a lithium secondary battery, which comprises an anode comprising the sulfur-carbon composite, a cathode, and a separator arranged between the electrodes.