Thermoelectric Field Enhanced Sulfur Evolution Kinetics for High Performance Lithium‐Sulfur Batteries DOI

Danqi He,

Xiaopeng Zhang,

L.-H. Chen

et al.

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

Published: May 13, 2025

Abstract The practical deployment of lithium‐sulfur (Li‐S) batteries has been impeded by the shuttle effect and sluggish kinetics lithium polysulfide (LiPSs) conversion. Here, Bi 0.5 Sb 1.5 Te 3 /carbon nanotubes (BST/CNT) interlayer is designed to enhance durability Li‐S providing extensive adsorption sites generating a thermoelectric field from BST material. Experimental density functional theory investigations confirm superior properties BST. Additionally, analyses using Gibbs free energy cyclic voltammetry robustly demonstrate that significantly accelerates conversion LiPSs. electrochemical performance cells equipped with 20% exceptional, showing remarkable stability over 500 cycles at 1 C minimal capacity decay rate 0.05% per cycle. Most importantly, substantially improves LiPSs, allowing cell maintain discharge 594 mAh g −1 even 10 C. Furthermore, under conditions high sulfur loading (7.0 mg cm −2 ) low electrolyte‐to‐sulfur ratio (6.1 µL ), achieves an areal 5.9 . This research not only evidences effectiveness in enhancing LiPSs but also shows its potential boost batteries.

Language: Английский

Advanced performance through mechanofusion-induced uniform interfacial layers for all-solid-state lithium-sulfur batteries DOI
Junyoung Heo,

Junghwan Sung,

Dong Hee Kim

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162292 - 162292

Published: Jan. 1, 2025

Language: Английский

Citations

0
Oxygen Functional Groups Regulating Sulfur Distribution in Carbon Micropores to Enhance Solid-Phase Conversion Reactions for Lithium–Sulfur Batteries DOI
Luna Yoshida, Takashi Hakari, Yukiko Matsui

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 5, 2025

The performance of lithium-sulfur (Li-S) batteries is determined by the cathode, which to a large extent affected low electrical conductivity S and dissolution lithium polysulfides (Li2Sx). confinement within microporous C promising method address these challenges. introduction O-containing functional groups inside micropores improves capacity for solid-phase conversion in Li-S batteries. However, mechanism behind this enhanced performance, particularly role on pores, remains unclear. In study, we investigate effect and/or Li2Sx micropores, focusing their impact electrochemical efficiency suppression polysulfide migration. Electrochemical impedance spectroscopy measurements show that accelerate charge transfer reactions Li+ ion diffusion. Cross-sectional scanning transmission electron microscopy-electron energy loss S-C composites reveals that, without groups, migrate localize inner edge carbon host during cycling. contrast, presence pores maintains uniform distribution explaining improved conclusion, paper proposes new design cathode high-performance For first time, experimental evidence provided confirm whereby into enhances lowering resistance preventing These modifications improve offer insights developing more effective cathodes advance commercialization

Language: Английский

Citations

0
Balancing sulfur utilization and electrolyte demand in Li−S batteries via porosity−tuned calendaring−driven electrodes DOI
Zhi‐Li Huang, Tao Shi, Jing Cheng

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 643, P. 237052 - 237052

Published: April 16, 2025

Language: Английский

Citations

0
Thermoelectric Field Enhanced Sulfur Evolution Kinetics for High Performance Lithium‐Sulfur Batteries DOI

Danqi He,

Xiaopeng Zhang,

L.-H. Chen

et al.

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

Published: May 13, 2025

Abstract The practical deployment of lithium‐sulfur (Li‐S) batteries has been impeded by the shuttle effect and sluggish kinetics lithium polysulfide (LiPSs) conversion. Here, Bi 0.5 Sb 1.5 Te 3 /carbon nanotubes (BST/CNT) interlayer is designed to enhance durability Li‐S providing extensive adsorption sites generating a thermoelectric field from BST material. Experimental density functional theory investigations confirm superior properties BST. Additionally, analyses using Gibbs free energy cyclic voltammetry robustly demonstrate that significantly accelerates conversion LiPSs. electrochemical performance cells equipped with 20% exceptional, showing remarkable stability over 500 cycles at 1 C minimal capacity decay rate 0.05% per cycle. Most importantly, substantially improves LiPSs, allowing cell maintain discharge 594 mAh g −1 even 10 C. Furthermore, under conditions high sulfur loading (7.0 mg cm −2 ) low electrolyte‐to‐sulfur ratio (6.1 µL ), achieves an areal 5.9 . This research not only evidences effectiveness in enhancing LiPSs but also shows its potential boost batteries.

Language: Английский

Citations

0