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US 11,430,979 B2Granted
Lithium ion battery anodes including graphenic carbon particles
AssigneePPG Industries Ohio, Inc.
InventorsNoel R. Vanier, David B. Asay, Kurt G. Olson, Edward F. Rakiewicz, Donghai Wang, Ran Yi
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Abstract
Lithium ion battery anodes including graphenic carbon particles are disclosed. Lithium ion batteries containing such anodes are also disclosed. The anodes include mixtures of lithium-reactive metal particles such as silicon, graphenic carbon particles, and a binder. The use of graphenic carbon particles in the anodes results in improved performance of the lithium ion batteries.
Claims33
A lithium ion battery anode coating material comprising:
- lithium-reactive metal particles;
- thermally-produced graphenic carbon particles comprising substantially flat planar sheets having aspect ratios of greater than 3:1, having at least 3 stacked atom layers, and having a Raman spectroscopy 2D/G peak ratio of at least 1:1;
- and
- a binder connecting the lithium reactive metal particles and the graphenic carbon particles together to form the coating, wherein the lithium reactive metal particles and the graphenic carbon particles are individually bound together with each other by the binder, and the graphenic carbon particles form a continuous network in the coating.
1 more element
A lithium ion battery comprising:
- an anode;
- a cathode;
- a separator between the anode and the cathode;
- and
- an electrolyte in contact with the anode and the cathode, wherein the anode comprises a coating of lithium-reactive metal particles, thermally-produced graphenic carbon particles comprising substantially flat planar sheets having aspect ratios of greater than 3:1, having at least 3 stacked atom layers and having a Raman spectroscopy 2D/G peak ratio of at least 1:1, and a binder connecting the lithium reactive metal particles and the graphenic carbon particles together to form the coating, wherein the lithium reactive metal particles and the graphenic carbon particles are individually bound together with each other by the binder, and the graphenic carbon particles form a continuous network in the coating.
2 more elements
Dependencies are inferred from the claim text.