• 专利标题:   Preparation method of aqueous conductive slurry for lithium ion battery, involves providing mass ratio of modified graphene fiber, conductive graphite and aqueous dispersant and transferring primary slurry to ball mill for ball milling specified min to obtain aqueous conductive slurry.
  • 专利号:   CN114121384-A, CN114121384-B
  • 发明人:   LIM S, CHEN F, LI Q, JING M
  • 专利权人:   SHENZHEN MINGSHENGWEI PIONEER TECHNOLOGY CO LTD, SHENZHEN MINGSHENGWEI PIONEER TECHNOLOGY
  • 国际专利分类:   B82Y030/00, B82Y040/00, H01B001/18, H01B001/24, H01B013/00, H01M010/0525, H01M004/62
  • 专利详细信息:   CN114121384-A 01 Mar 2022 H01B-013/00 202236 Chinese
  • 申请详细信息:   CN114121384-A CN10110896 29 Jan 2022
  • 优先权号:   CN10110896

▎ 摘  要

NOVELTY - The method involves providing N-methylpyrrolidone and nano-mesoporous spheres and mixing. The mass ratio of the N-methylpyrrolidone and nano-mesoporous spheres is 100:2-10. Nitrogen-doped graphene and CNTs are added to N-methylpyrrolidone in turn. After ultrasonication, the fiber-forming polymer is added to N-methylpyrrolidone and transferred to an oil bath at 120 to 126 degreesC. After stirring and mixing, it is used as a spinning dope, and the spinning needle whose inner diameter became larger along the spinning direction that is used to carry out electrospinning, collecting, and shearing. Modified graphene fibers, conductive graphite, water-based dispersant and deionized water and mix them into primary paste is provided. The mass ratio of the modified graphene fiber, the conductive graphite and the aqueous dispersant is 50-100:2-5:0.2-2, and the primary slurry is transferred to a ball mill for ball milling for 5-20 min to obtain an aqueous conductive slurry. USE - Preparation method of aqueous conductive slurry (claimed) for lithium ion battery used as mobile phone, flat computer, notebook computer and other portable electronic product main power supply. ADVANTAGE - The method is configured to enable to prepare aqueous conductive slurry, which has good buffer effect, effectively buffer the stress caused by volume change, prevent the conductive agent or electrode deformation, crack and so on, and is convenient for the lithium ion to quickly pass through, improve the multiplying power performance and cycle stability of the battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an aqueous conductive slurry. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view of the test result diagram of the magnification performance of the button cell. (Drawing includes non-English language text).