• 专利标题:   Lithium-replenishing anode sheet useful in lithium ion battery, comprises lithium-replenishing agent and ferrous salts and/or aluminosilicates.
  • 专利号:   CN115548476-A
  • 发明人:   LIU F, XIONG H, YANG Q, ZHOU Z, SHENG S
  • 专利权人:   EVE POWER CO LTD
  • 国际专利分类:   H01M010/0525, H01M010/42, H01M004/13, H01M004/139, H01M004/62
  • 专利详细信息:   CN115548476-A 30 Dec 2022 H01M-010/42 202311 Chinese
  • 申请详细信息:   CN115548476-A CN11233266 10 Oct 2022
  • 优先权号:   CN11233266

▎ 摘  要

NOVELTY - Lithium-replenishing anode sheet comprises a lithium-replenishing agent and additives. The additives are ferrous salts and/or aluminosilicates. The ferrous salt is ferrous chloride, ferrous sulfate, ferrous carbonate, ferrous bromide and/or ferrous iodide. The aluminosilicates is sodium aluminosilicate, lithium aluminosilicate, potassium aluminosilicate, magnesium aluminosilicate, iron aluminosilicate and/or calcium aluminosilicate. The lithium replenishing agent includes lithium-rich compounds i.e. lithium nickel oxide and/or lithium iron oxide and/or binary lithium compounds. The binary lithium compound includes lithium nitride and/or lithium oxide. The active material is lithium iron phosphate, lithium cobaltate, lithium manganate and/or ternary materials. The binder is polyvinylidene fluoride, styrene-butadiene rubber and/or polyvinyl alcohol. The conductive agent is conductive carbon black, conductive graphite, conductive carbon nanotubes and/or graphene. USE - The anode sheet is useful in lithium ion battery (claimed). ADVANTAGE - The anode sheet absorbs the impurity gas produced by the lithium-supplementing agent, reacts chemically with HF generated in the process of chemical composition and volume, acts as a catalyst to avoid the phenomenon of cell bulging, improves the safety performance of the battery, reduces the damage to the SEI film on the surface of the anode/cathode and obviously improves electrochemical performance of the battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the lithium-replenishing anode sheet.