• 专利标题:   Preparation of negative electrode sheet for lithium ion battery, involves hydrothermally reacting graphene oxide dispersion, ascorbic acid and solid carbon ball, grinding with binder, slurrying, coating on copper foil and vacuum-drying.
  • 专利号:   CN108134048-A
  • 发明人:   LIN R
  • 专利权人:   ZHUZHOU ZHIHUI INTELLECTUAL PROPERTY OPE
  • 国际专利分类:   H01M004/1393, H01M004/04, H01M004/587, H01M004/62, H01M010/0525, H01M010/058, C01B032/05, C01B032/184
  • 专利详细信息:   CN108134048-A 08 Jun 2018 H01M-004/1393 201855 Pages: 8 Chinese
  • 申请详细信息:   CN108134048-A CN11416753 24 Dec 2017
  • 优先权号:   CN11416753

▎ 摘  要

NOVELTY - Preparation of lithium ion negative electrode sheet involves adding an aqueous solution of glucose to a hydrothermal reactor, hydrothermally reacting, naturally cooling, centrifuging, adjusting pH to 7, drying, calcining, obtaining solid carbon ball, dispersing graphene oxide in deionized water, adding ascorbic acid and solid carbon ball, mixing, transferring to a high-pressure reactor, hydrothermally reacting at 160-240 degrees C for 6-24 hours, centrifuging, drying, reacting at 300-500 degrees C for 1-2 hours and 600-800 degrees C for 1-2 hours, grinding with a binder for 30-50 seconds, adding N-methylpyrrolidone solvent, slurrying, coating resultant on a copper foil, vacuum-drying, and shaping to sheet having diameter of 16 mm. USE - Preparation of negative electrode sheet used for manufacturing lithium ion battery (claimed). ADVANTAGE - The method enables preparation of negative electrode sheet having excellent electroconductivity and suppressed generation of agglomeration. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of button-type lithium ion battery.