• 专利标题:   Electrode material for battery, comprises lithium-manganese-fluoro-metal phosphate-based crystal having preset crystal direction and thickness.
  • 专利号:   CN116130634-A
  • 发明人:   LIU J, HE W, ZENG H, HU Q, XU X
  • 专利权人:   EVE POWER CO LTD
  • 国际专利分类:   H01M010/0525, H01M004/36, H01M004/58, H01M004/62
  • 专利详细信息:   CN116130634-A 16 May 2023 H01M-004/36 202351 Chinese
  • 申请详细信息:   CN116130634-A CN10144168 21 Feb 2023
  • 优先权号:   CN10144168

▎ 摘  要

NOVELTY - An electrode material comprises lithium-manganese-fluoro-metal phosphate-based crystal. The crystal has a 010 crystal direction and a thickness of 10-80 nm in the 010 crystal direction. USE - Material used in positive electrode of battery (claimed). ADVANTAGE - The electrode material has low thickness in the 010 crystal direction, thus ensuring short lithium ion diffusion distance, improved lithium ion diffusion rate and multiplying power performance. DETAILED DESCRIPTION - An electrode material comprises lithium-manganese-fluoro-metal phosphate-based crystal of formula: LiMn(1-x-y)FxMyPO4, where M is one or more of titanium, zirconium, aluminum, potassium, magnesium, strontium and barium, 1-x-y is 0.2-0.8, x is 0.2-0.8 and y is 0-0.1. The crystal has a 010 crystal direction and a thickness of 10-80 nm in the 010 crystal direction. An INDEPENDENT CLAIM is included for preparation of electrode material, which involves preparing phosphate, manganese salt, iron salt, lithium salt and crystal plane regulator into suspension, transferring the suspension to an inert gas atmosphere, and hydrothermally reacting under high pressure. The crystal plane regulator is used for increasing the activation energy of crystal growth in 010 crystal direction, and inhibiting the growth of the crystal in the 010 crystal direction.