• 专利标题:   Inhibiting gel of iron acid lithium and improving stability of slurry, comprises adding binder polyvinylidene fluoride and N-methylpyrrolidone into stirring tank, adding additive into polyvinylidene fluoride glue and dispersing at high speed to obtain lithium ferrite slurry.
  • 专利号:   CN115411231-A
  • 发明人:   XU X, BAI K, SUN Y, ZHANG Y, YOU G, TAN Y, WANG Y, HE T, CHEN F, LIN Q
  • 专利权人:   JIANGXI ANC NEW ENERGY TECHNOLOGY CO LTD
  • 国际专利分类:   H01M004/1391, H01M004/525, H01M004/62
  • 专利详细信息:   CN115411231-A 29 Nov 2022 H01M-004/1391 202304 Chinese
  • 申请详细信息:   CN115411231-A CN11050178 31 Aug 2022
  • 优先权号:   CN11050178

▎ 摘  要

NOVELTY - Inhibiting gel of iron acid lithium and improving stability of slurry, comprises (i) adding binder polyvinylidene fluoride and N-methylpyrrolidone into the stirring tank, stirring and dissolving fully to obtain polyvinylidene fluoride glue; (ii) adding additive into polyvinylidene fluoride glue, stirring and disperse to obtain slurry I; (iii) adding conductive agent and N-methylpyrrolidone to slurry I, stirring and dispersing to obtain slurry II; and (iv) adding lithium ferrite to slurry II, stirring and dispersing at high speed to obtain lithium ferrite slurry. The additive is oxalic acid, phosphoric acid and/or phosphorous acid. The conductive agent is conductive carbon black, superconducting carbon black, conductive graphite, acetylene black, Ketjen black, graphene and/or carbon nanotubes. USE - The method is useful for inhibiting gel of iron acid lithium and improving stability of slurry. ADVANTAGE - The method solves the deficiency of the existing technology, solves the phenomenon of gel acid lithium slurry, reduces the requirement of high alkaline material slurry to the environment humidity, improves the slurry success rate, and inhibits the bridging reaction between the polymer chains of the adhesive.