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US 11,695,118 B2Granted
Modified cathodes for solid-state lithium sulfur batteries and methods of manufacturing thereof
AssigneesCorning Incorporated, Shanghai Institute of Ceramics Chinese Academy
InventorsMichael Edward Badding, Jun Jin, Zhen Song, Qing Wang, Zhaoyin Wen, Tongping Xiu
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Abstract
A lithium-sulfur battery includes: a substrate; a composite cathode disposed on the substrate; a solid-state electrolyte disposed on the composite cathode; and a lithium anode disposed on the solid-state electrolyte, such that the composite cathode comprises: active elemental sulfur, conductive carbon, sulfide electrolyte, and ionic liquid.
Claims19
A lithium-sulfur battery, comprising:
- a substrate;
- a composite cathode disposed on the substrate;
- a coating layer disposed on the composite cathode, the coating layer further positioned within an interior of the composite cathode and penetrating a porous structure of the composite cathode, and the coating layer comprises a N—C—Co composite, polyethylene oxide, and at least one of LiTFSI, LiTf, or LiBETI;
- a solid-state electrolyte, the coating layer positioned between the composite cathode and the solid-state electrolyte;
- and
- a lithium anode disposed on the solid-state electrolyte,
- wherein the composite cathode comprises active elemental sulfur, conductive carbon, sulfide electrolyte, and ionic liquid.
4 more elements
A lithium-sulfur battery, comprising:
- a composite cathode disposed on a substrate;
- and
- a coating layer disposed on the composite cathode, the coating layer further positioned within an interior of the composite cathode and penetrating a porous structure of the composite cathode, and the coating layer comprises a N—C—Co composite, polyethylene oxide, and at least one of LiTFSI, LiTf, or LiBETI,
- wherein the composite cathode comprises:
- active elemental sulfur, conductive carbon, sulfide electrolyte, and ionic liquid.
2 more elements
A method of forming a composite cathode for a lithium-sulfur battery, comprising:
- synthesizing a sulfide electrolyte powder from Li2S and P2S5;
- preparing an active elemental sulfur/conductive carbon powder comprising carbon black and at least one carbon nanostructure;
- forming a mixture of the sulfide electrolyte powder and the active elemental sulfur/conductive carbon powder;
- adding an ionic liquid to the mixture to form a composite cathode slurry having a viscosity of greater than 3000 cP;
- and
- disposing a coating layer on the composite cathode slurry, the coating layer penetrates a porous structure of the composite cathode slurry to be positioned within an interior of the composite cathode slurry, and the coating layer comprises a N—C—Co composite, polyethylene oxide, and at least one of LiTFSI, LiTf, or LiBETI.
3 more elements
Dependencies are inferred from the claim text.