• 专利标题:   Electrode material useful in battery pole piece of secondary battery, comprises conductive agent e.g. polytetrafluoroethylene, polychlorotrifluoroethylene and tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and binding agent e.g. tetrafluoroethylene-hexafluoropropylene copolymer.
  • 专利号:   CN115842128-A
  • 发明人:   DAI S, LI S, DENG K, HU C, YU L, WANG Y, LU L, WANG Z
  • 专利权人:   NINGDE CONTEMPORARY AMPEREX TECHNOLOGY
  • 国际专利分类:   H01M010/0525, H01M004/13, H01M004/139, H01M004/62
  • 专利详细信息:   CN115842128-A 24 Mar 2023 H01M-004/62 202332 Chinese
  • 申请详细信息:   CN115842128-A CN10667718 14 Jun 2022
  • 优先权号:   CN10667718

▎ 摘  要

NOVELTY - Electrode material comprises electrode active material, conductive agent and binding agent; where the binding agent includes first binding agent having polytetrafluoroethylene, polychlorotrifluoroethylene, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, and/or ethylene-trifluorochloroethylene copolymer; the first binding agent further includes a second binding agent or a third binding agent; and the second binding agent includes acrylic acid, acrylate, acrylonitrile, and/or acrylamide copolymers; the third binding agent includes polyvinylidene fluoride, vinylidene fluoride tetrafluoroethylene-propylene terpolymer, vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene terpolymer and/or fluorine-containing acrylate resin. USE - The electrode material is useful in battery pole piece of secondary battery (all claimed), e.g. lithium ion battery used in electric/hybrid electric vehicle and mobile terminal. ADVANTAGE - The electrode material has good adhesion and material fusion, and avoids the floating on the binding agent pole piece in the preparation process, avoids the layering phenomenon and demolding risk, increases the energy density of the electric core, and improves the transmission capability of the lithium ion, and multiplying power performance; and reduces the impedance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a battery pole piece; preparation method of the electrode pole piece; and a secondary battery.