• 专利标题:   Manufacturing anti-overcharging low-temperature rate type negative pole piece used in lithium ion battery, involves mixing negative current collector, composite additive slurry and negative electrode slurry, followed by coating, and drying.
  • 专利号:   CN113258037-A, CN113258037-B
  • 发明人:   HU C, SHAO L, TIAN Z, YUAN L, GAO X, LU T
  • 专利权人:   SHAANXI COAL CHEM IND TECHNOLOGY RES
  • 国际专利分类:   H01M010/0525, H01M010/42, H01M010/613, H01M010/653, H01M010/654, H01M004/04, H01M004/13, H01M004/139, H01M004/62
  • 专利详细信息:   CN113258037-A 13 Aug 2021 H01M-004/139 202185 Pages: 18 Chinese
  • 申请详细信息:   CN113258037-A CN10593875 28 May 2021
  • 优先权号:   CN10593875

▎ 摘  要

NOVELTY - Manufacturing anti-overcharge low-temperature-rate type negative pole piece involves mixing uniformly composite additive slurry and negative electrode slurry, or coating composite additive slurry and negative electrode slurry layer, obtaining electrode current collector after coating, drying electrode current collector after coating, and pressing to obtain anti-overcharge low-temperature rate type negative pole piece, where composite additive slurry comprises 0.1-4 wt.% anti-overcharge additive, 1-6 wt.% conductive additive, 1-6 wt.% heat-conducting additive, 0.1-1 wt.% dispersant and balance solvent; anti-overcharge additive is 1,4-di-tert.-butyl-2,5-dimethoxy benzene; dispersant is composite of titanate coupling agent and polyvinylpyrrolidone. USE - Method for manufacturing an anti-over-charge low-temperature-rate type negative pole piece used in lithium ion battery (claimed). ADVANTAGE - The method enables to prepared anti-overcharge low-temperature rate type negative pole piece with excellent low-temperature discharge performance, rate discharge performance and good anti-over-charge and safety performance of lithium ion battery.