Design Strategies Based on Electronic Interactions for Effective Catalysts in Lithium‐Sulfur Batteries DOI Creative Commons
Donghyeok Son, Cheol‐Young Park, Jinuk Kim

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Lithium–sulfur batteries (LSBs) are considered promising next‐generation due to their high energy density (>500 W h kg −1 ). However, LSBs exhibit an unsatisfactory (<400 ) and cycle life (<300 cycles) because of the shuttle effect caused by soluble lithium polysulfide (LiPS) intermediates sluggish conversion reaction kinetics insulating sulfur (S 8 sulfide (Li 2 S). Although various types catalysts, including metal‐based compounds single‐atom have been reported address these issues, most catalysts exhibited limited catalytic activity under practical lean electrolyte conditions (<5 µL mg A comprehensive understanding synthetic strategy mechanism is essential for design, but electronic effects LiPS more important. Furthermore, design not well understood. In this review, we introduce mechanisms in discuss catalyst strategies terms on interactions between reactants with a primary focus heterogeneous systems. We additionally consider how property homogeneous systems, particularly redox mediators, affects behavior propose future research directions development LSBs.

Language: Английский

Boosting Polysulfide Conversion on Fe‐Doped Nickel Diselenide Toward Robust Lithium–Sulfur Batteries DOI Open Access
Junshan Li, Jing Yu, Yong Cai Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract Sulfur offers a high‐energy‐density, low‐cost, and sustainable alternative to traditional battery cathodes, but its practical use is limited by sluggish uneven reaction polysulfide dissolution, necessitating electrocatalytic additives enhance conversion efficiency. Generating unpaired spin electrons has proven effective in enhancing performance Co‐based electrocatalysts. These increase adsorption weakening S─S bonds, facilitating their cleavage during sulfur reduction reactions. This work extends the strategy Fe–Ni‐based catalysts. The synthesis of NiSe 2 Fe‐doped particles reported investigate impact Fe doping on electronic structure, catalytic activity, introduced as coating cathode side Li–S (LSB) separator. Experimental analyses first‐principles calculations reveal that Fe‐rich cores surface density states at Fermi level introduce electrons, boosting LiPS conversion. synergistic effects significantly improve performance, cycling stability, overall LSB cells. Specifically, cells based ‐based separators achieve specific capacities 1483 mAh g⁻¹ 0.1C 1085 1C, along with remarkable retaining 84.4% capacity after 800 cycles. High sulfur‐loading tests further validate multifunctional membrane's effectiveness, showing significant retention reduced loss.

Language: Английский

Citations

2
Design Strategies Based on Electronic Interactions for Effective Catalysts in Lithium‐Sulfur Batteries DOI Creative Commons
Donghyeok Son, Cheol‐Young Park, Jinuk Kim

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Lithium–sulfur batteries (LSBs) are considered promising next‐generation due to their high energy density (>500 W h kg −1 ). However, LSBs exhibit an unsatisfactory (<400 ) and cycle life (<300 cycles) because of the shuttle effect caused by soluble lithium polysulfide (LiPS) intermediates sluggish conversion reaction kinetics insulating sulfur (S 8 sulfide (Li 2 S). Although various types catalysts, including metal‐based compounds single‐atom have been reported address these issues, most catalysts exhibited limited catalytic activity under practical lean electrolyte conditions (<5 µL mg A comprehensive understanding synthetic strategy mechanism is essential for design, but electronic effects LiPS more important. Furthermore, design not well understood. In this review, we introduce mechanisms in discuss catalyst strategies terms on interactions between reactants with a primary focus heterogeneous systems. We additionally consider how property homogeneous systems, particularly redox mediators, affects behavior propose future research directions development LSBs.

Language: Английский

Citations

0