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US 10,707,481 B2Granted
Stable silicon-ionic liquid interface lithium-ion batteries
AssigneeThe Regents of the University of Colorado, a body corporate
InventorsSe-Hee Lee, Jerry Martin, Vinay Bhat, Daniela Molina Piper, Tyler Evans
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Abstract
The disclosure includes a composition of matter including a film formed on substantially all nSi-cPAN particles included in an electrode, the film including fluorine, oxygen, sulfur, carbon and lithium.
Claims8
An electrical energy storage device comprising:
- an electrode system comprising:
- an active material comprising a plurality of nanosilicon particles;
- and
- a polyacrylonitrile polymer binding the active material and conducting electricity and lithium ions, wherein the polyacrylonitrile polymer conformally and individually coats each of the plurality of nanosilicon particles;
- a second electrode;
- and
- a room temperature ionic liquid electrolyte to contact the electrode system and the second electrode, wherein the room temperature ionic liquid electrolyte includes a positive ion species selected from the group consisting of pyrrolidinium and 1-ethyl-3-methyl-imidazolium.
4 more elements
Dependencies are inferred from the claim text.