D‐Band Center Modulation of Fe‐Doping CoSe₂ to Accelerate Polysulfide Conversion for High‐Performance Lithium–Sulfur Battery

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract As prospective energy storage devices surpass conventional lithium‐ion systems, lithium–sulfur batteries confront operational challenges, including polysulfide dissolution and slow redox dynamics. This work reports an iron doping methodology to engineer CoSe 2 ‐based electrocatalysts with optimized electronic configurations. The strategic introduction of dopants induces valence electron redistribution between metallic centers, systematically tuning the d‐orbital level alignment relative Fermi energy. Such modification substantially enhances phase transformation kinetics soluble LiPS intermediates insoluble Li S deposition. Hence, Fe(0.05)‐CoSe catalyst display more excellent cyclic lifespan, rate performance, specific capacities than those catalyst. It delivers initial discharge capacity 1473 mAh g −1 , 444 after 1000 cycles at 1.0C. provides efficient strategy accelerate conversion polysulfides on system.

Language: Английский

Exquisite hybridized electrocatalyst with moderate selenium element integration for reliable lithium-sulfur batteries

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137600 - 137600

Published: April 1, 2025

Language: Английский