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Introducing a mobile layer of ionic liquid into electrolytes of lithium ion batteries

  • US 10,424,814 B2
  • Filed: 06/21/2018
  • Issued: 09/24/2019
  • Est. Priority Date: 04/07/2016
  • Status: Active Grant
First Claim
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1. A method comprising:

  • adding, into a carbonate-containing electrolyte of a lithium ion battery, up to 10 percent by volume of at least one ionic liquid, which consists of cations and anions,forming, during charging of the lithium ion battery and at surfaces of anode material particles thereof, a mobile layer comprising at least some of the cations, andestablishing a gradient of electric charge at the mobile layer during charging of the lithium ion battery, to provide an interphase transition between the electrolyte and the anode material particles, the gradient configured to have a gradual change of parameters which gradually reduces an activation energy of a reduction reaction of lithium ions being charged from the electrolyte into the anode material particles.

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