• 专利标题:   Method for recycling graphite material cathode waste lithium battery comprises preparing fine graphite particle material, placing frozen and dried graphite material in ball milling tank for high energy ball milling treatment, and obtaining fine graphite particle material.
  • 专利号:   CN115332662-A
  • 发明人:   CHEN Y, CHENG F, HUANG H, XIE D
  • 专利权人:   GUANGZHOU R B ENVIRONMENTAL PROTECTION, UNIV DONGGUAN TECHNOLOGY
  • 国际专利分类:   C01B032/215, H01M010/0525, H01M010/54, H01M004/587
  • 专利详细信息:   CN115332662-A 11 Nov 2022 H01M-010/54 202304 Chinese
  • 申请详细信息:   CN115332662-A CN10958549 09 Aug 2022
  • 优先权号:   CN10958549

▎ 摘  要

NOVELTY - The method comprises recycling the waste lithium-ion battery graphite material cathode manually disassemble the waste lithium-ion battery, separating the anode and cathode, then introducing the whole cathode into the reaction container, using ultrasonic to process, making the graphite on the copper foil current collector fall off, collecting the dropped graphite by suction filtering, introducing into an oven to dry, purifying the graphite material cathode waste lithium-ion battery, heat treating the graphite material obtained after drying, oxidizing the metal elementary substance into metal oxide, preparing fine graphite particle material, placing the frozen and dried graphite material in the ball milling tank for high energy ball milling treatment, taking out after ball milling, obtaining fine graphite particle material. USE - Method for recycling graphite material cathode waste lithium battery used in battery recycling technology field. Uses include but are not limited to carbon nano tube, carbon nano-fiber, functional conductive carbon material e.g. graphene and porous carbon obtained in lithium-ion battery cathode. ADVANTAGE - The method: is simple to oxidize; has large specific surface area; can fully contact the electrode material and electrolyte; provides a lot of electrochemical reaction activity sites; has better performance than graphite material without ball-milling treatment; adopts the good conductivity and stability of graphite provides good cycle stability and multiplying power capability for battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an application of fine graphite particle material prepared by the recycling method.