Lithium ion battery cathode additive, fabrication method thereof, lithium ion battery cathode sheet and lithium ion battery

  • US 10,084,189 B2
  • Filed: 12/24/2014
  • Issued: 09/25/2018
  • Est. Priority Date: 10/26/2012
  • Status: Active Grant
First Claim
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1. A lithium ion battery cathode additive, comprising:

  • a core-shell coating structure formed by elemental lithium powder and a polymer coated on the surface of the elemental lithium powder,wherein the polymer comprises polyalkylene carbonate, andwherein the polymer can dissolve in a carbonic ester solvent, the polymer cannot react with N,N-dimethylformamide, N,N-dimethylacetamide, N-2-methyl pyrrolidone, tetrahydrofuran, acetone or methanol, and the polymer exists stably at a temperature of 0-150°

    C.

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