Lithium-sulfur secondary battery
AssigneesSeoul National University R&Db Foundation, Institute for Basic Science
InventorsYung-Eun Sung, Chunjoong Kim, Jungjin Park
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Abstract
A lithium-sulfur secondary battery includes a cathode current collector and a cathode electrode on the cathode current collector. The cathode electrode includes a porous carbon interlayer electrode including a plurality of carbon fibers, metal sulfide catalyst particles dispersed and positioned on the porous carbon interlayer electrode, and sulfur-based active material particles dispersed on the porous carbon interlayer electrode to be attached thereto and including sulfur.
Claims11
A lithium-sulfur secondary battery comprising:
- a cathode current collector;
- and
- a cathode electrode on the cathode current collector,
- wherein the cathode electrode comprises:
- a cathode active material sheet including sulfur-based active material particles including sulfur, a binder, and a conductive material,
- a porous carbon interlayer electrode including a plurality of carbon fibers,
- metal sulfide catalyst particles dispersed and positioned on the porous carbon interlayer electrode,
- wherein the metal sulfide catalyst particles are also dispersed on the cathode active material sheet,
- wherein the metal sulfide catalyst particles comprise tungsten disulfide (WS2).
A lithium-sulfur secondary battery comprising:
- a cathode current collector;
- a cathode electrode on the cathode current collector,
- wherein the cathode electrode comprises:
- a cathode active material sheet including sulfur-based active material particles including sulfur, a binder, and a conductive material,
- a carbon interlayer electrode comprising a plurality of carbon fibers, and
- metal sulfide catalyst particles dispersed and positioned on the carbon interlayer electrode and comprising tungsten;
- an anode current collector;
- an anode electrode positioned on the anode current collector and comprising lithium;
- a separator located between the anode electrode and the cathode electrode;
- and
- an electrolyte allowing the separator to be immersed therein and being in contact with a surface of the cathode electrode,
- wherein the metal sulfide catalyst particles are also dispersed and positioned on the cathode active material sheet,
- wherein the metal sulfide catalyst particles comprise tungsten disulfide (WS2).
Dependencies are inferred from the claim text.