• 专利标题:   Composite anode material useful in secondary battery, comprises graphene generated by cracking of carbon nanotubes and lithium metal phosphate attached to carbon nanotubes or in contact with carbon nanotubes and/or graphene.
  • 专利号:   CN116190608-A
  • 发明人:   WANG P, LIU T, CHEN Y, LI Y, WAN Y, KONG L, XUE S
  • 专利权人:   SHENZHEN DYNANONIC CO LTD
  • 国际专利分类:   H01M010/0525, H01M004/36, H01M004/58, H01M004/587
  • 专利详细信息:   CN116190608-A 30 May 2023 H01M-004/36 202354 Chinese
  • 申请详细信息:   CN116190608-A CN10182610 20 Feb 2023
  • 优先权号:   CN10182610

▎ 摘  要

NOVELTY - Composite anode material comprises graphene generated by cracking of a carbon nanotubes and lithium metal phosphate attached to the carbon nanotubes or in contact with the carbon nanotubes and/or the graphene. USE - The composite anode material is useful in secondary battery (claimed). ADVANTAGE - The composite anode material: has nano-lithium metal phosphate particles in the composite material are attached to the carbon nanotube lines to form a "beaded" structure, facilitate electron transfer across lithium metal phosphate particles and form a "point line surface" three-dimensional network structure with graphene sheets; and transfers electron between lithium metal phosphate particles thus improves the ion and electronic conductivity, and the cycle stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing composite anode material using metal lithium comprising lithium iron phosphate, lithium manganese phosphate, LiMnFePO, Lithium vanadium phosphate and Lithium cobalt phosphate, the dispersant comprising at least one of polyvinylpyrrolidone, polyethylene glycol, and/or (Polysorbate 80), the reducing agent comprises ascorbic acid and/or sodium citrate, the lithium source comprises at least one of lithium hydroxide, lithium oxalate and/or lithium acetate, the phosphorus source comprising at least one of phosphoric acid, ammonium dihydrogen phosphate, and/or ammonium phosphate, manganese source comprising at least one of manganese acetate, manganese sulfate, manganese nitrate and/or manganese chloride, the iron source comprises at least one of ferrous sulfate, ferrous acetate and/or ferrous nitrate, the vanadium source comprises at least one of vanadium sulfate, vanadium nitrate and/or vanadium chloride and/or, the cobalt source comprising at least one of cobalt sulfate, cobalt carbonate, cobalt nitrate, cobalt chloride, and/or cobalt acetate; andx1-x4Tween-80 Secondary battery.