Sulfur-carbon compound, method for its production and positive electrode for lithium-sulfur battery as well as lithium-sulfur battery therewith
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2019-06-04
- Publication Date
- 2026-03-04
AI Technical Summary
Lithium-sulfur batteries face issues with low porosity leading to reduced lithium ion migration, detachment of positive electrode active material from the current collector, and decreased electrochemical reactivity due to volume expansion and polysulfide leaching, which deteriorate performance and cycle life.
A sulfur-carbon composite is developed with a porous carbon material coated by a compound with electrolyte solution impregnation property, forming a migration path for electrolyte solution and enhancing adhesive force to the current collector, comprising a coating layer on the porous carbon material and sulfur.
Improves lithium ion migration, maintains electrochemical reactivity, and increases adhesive force, thereby enhancing the lifetime and performance of lithium-sulfur batteries with low porosity.