• 专利标题:   Preparing cathode slurry used in lithium-ion battery, comprises dry mixing cathode active material, solid conductive agent and optional additives to obtain mixed dry material, and mixing with agglomerant solution and mixing conductive agent slurry with active material slurry.
  • 专利号:   CN116259717-A
  • 发明人:   YANG W, MA S, ZHANG Y, LI W, LU C
  • 专利权人:   TIANJIN EV ENERGIES CO LTD
  • 国际专利分类:   H01M010/052, H01M010/0525, H01M004/04, H01M004/139, H01M004/1391, H01M004/1393, H01M004/1395, H01M004/62
  • 专利详细信息:   CN116259717-A 13 Jun 2023 H01M-004/139 202356 Chinese
  • 申请详细信息:   CN116259717-A CN10342922 31 Mar 2023
  • 优先权号:   CN10342922

▎ 摘  要

NOVELTY - Preparing cathode slurry comprises dry mixing the cathode active material, solid conductive agent and optional additives to obtain a mixed dry material, dividing the agglomerant solution into at least two parts, and mixing at least two parts of the agglomerant solution with the mixed dry material step by step to obtain active material slurry, and mixing the conductive agent slurry with the active material slurry. The cathode active material includes at least two of graphite, silicon-oxygen material, silicon-carbon material, soft carbon and hard carbon. The solid conductive agent includes at least two of solid carbon black, acetylene black and graphene. The additive includes a dispersant. USE - Preparation method of cathode material is used in lithium ion battery for electric vehicle, hybrid electric vehicle (HEV), plug-in HEV (PHEV), etc. ADVANTAGE - The method combines wet and dry homogenization processes to form a semi-dry process for homogenization, controls the way and order of adding raw materials, improves slurry process, reduces equipment requirements, increases solid content of the slurry, and guarantees stability, dispersion and uniformity of the cathode slurry. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a cathode; and Lithium-ion battery. DESCRIPTION OF DRAWING(S) - The drawing shows flow diagram of method for preparing cathode slurry for lithium-ion battery (Drawing includes non-English language text).