Lithium-sulfur battery cathode material, manufacturing method thereof, and lithium-sulfur secondary battery using the same

Lithium-sulfur battery cathode material using nitrogen-doped carbon nanotubes loaded with binary metals

This technology relates to a cathode material for lithium-sulfur batteries, featuring binary metals incorporated by loading nickel-thiourea and cobalt-thiourea compounds onto nitrogen-doped carbon nanotubes.

Conventional lithium-sulfur batteries suffer from capacity degradation and slow reaction rates due to the dissolution and diffusion of lithium polysulfides generated during charge and discharge cycles.

By loading binary metal catalysts onto nitrogen-doped carbon nanotubes, this technology accelerates the polysulfide reaction when applied to lithium-sulfur batteries, thereby improving both capacity and cycle life.

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Key Features:

• Preparing nitrogen-doped carbon nanotubes and synthesizing nickel-thiourea and cobalt-thiourea compounds
• Adding the prepared nitrogen-doped carbon nanotubes to an organic solvent and dispersing them uniformly
• Adding and mixing the nickel-thiourea and cobalt-thiourea compounds into the solvent containing the dispersed carbon nanotubes to prepare a mixed slurry
• Stirring the mixed slurry while evaporating the solvent to form the binary metal-loaded lithium-sulfur battery cathode material

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