Physical Field Effects to Suppress Polysulfide Shuttling in Lithium–Sulfur Battery

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 14, 2024

Lithium-sulfur batteries (LSB) with high theoretical energy density are plagued by the infamous shuttle effect of lithium polysulfide (LPS) and sluggish sulfur reduction/evolution reaction. Extensive research is conducted on how to suppress effects, including physical structure confinement engineering, chemical adsorption strategy, design redox catalysts. Recently, rational mitigate effects enhance reaction kinetics based field has been widely studied, providing a more fundamental understanding interactions species. Herein, focused their methods mechanisms interaction summarized systematically LPS. Overall, working principle LSB system, origin effect, kinetic trouble in briefly described. Then, mechanism application materials concepts external field-assisted elaborated, electrostatic force, built-in electric field, spin state regulation, strain magnetic photoassisted other strategies pivotally elaborated discussed. Finally, potential directions enhancing performance weakening high-energy anticipated.

Language: Английский

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Developing a Multifunctional Cathode for Photoassisted Lithium–Sulfur Battery

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

Integration of solar cell and secondary battery cannot only promote energy application but also improve the electrochemical performance battery. Lithium-sulfur (LSB) is an ideal candidate for photoassisted batteries owing to its high theoretical capacity. Unfortunately, researches related combination LSB are relatively lacking. Herein, a freestanding photoelectrode developed lithium-sulfur (PALSB) by constructing heterogeneous structured Au@N-TiO

Language: Английский

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Coupling Bifunctional Scaffolds with Slow Photon Effect for Synergistically Enhanced Photoassisted Lithium–Sulfur Battery Properties

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 25, 2025

Photoassisted lithium-sulfur (Li-S) batteries offer a promising approach to enhance the catalytic transformation kinetics of polysulfide. However, development is greatly hindered by inadequate photo absorption and severe photoexcited carriers recombination. Herein, photonic crystal sulfide heterojunction structure designed as bifunctional electrode scaffold for photoassisted Li-S batteries. Inverse opal (IO) structures utilize slow photon effect that originates from their adjustable band gaps, giving them distinctive optical response characteristics. The incorporation SnS/ZnS within these IO frameworks further broadens light spectrum enhances charge transfer process. This efficient hybrid not only adsorption conversion polysulfides at cathode but also induces uniform Li nucleation anode. These contribute full output high reversible capability 1072 mAh g-1 maintain stable cycling 50 cycles. Additionally, specific capacity 698.8 still obtained even under sulfur loading up 4 mg cm-2. present strategy on battery properties can be extended rationally construct other energy storage devices.

Language: Английский

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Hydroxy-titanium pillared montmorillonite modified separator with strong adsorption and fast catalytic conversion of polysulfides enables high-performance lithium-sulfur batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161151 - 161151

Published: Feb. 1, 2025

Language: Английский

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