What question did this study set out to answer?

To accelerate slow reaction kinetics and improve polysulfide conversion in lithium-sulfur battery cathodes using an anionic-doped transition metal chalcogenide catalyst.

December 17, 2024Angewandte Chemie

Anionic Doping in Layered Transition Metal Chalcogenides for Robust Lithium‐Sulfur Batteries

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Authors

CHChen HuangShanghai Maritime University JYJing YuConsejo Superior de Investigaciones Científicas CZChaoyue ZhangShihezi University

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Overview

Experimental study demonstrates enhanced catalytic kinetics in lithium-sulfur batteries using tellurium-doped bismuth selenide, indicating a viable pathway for high-capacity energy storage.

Key Points

To accelerate slow reaction kinetics and improve polysulfide conversion in lithium-sulfur battery cathodes using an anionic-doped transition metal chalcogenide catalyst.
Synthesized tellurium-doped, carbon-supported bismuth selenide with selenium vacancies (Te-Bi2Se3-x@C) as a sulfur host.
Characterized structural, electronic, and coordination changes using X-ray absorption spectroscopy and in situ X-ray diffraction.
Evaluated electrochemical performance under high sulfur loading (6.4 mg·cm⁻²) and lean electrolyte conditions (6.8 μL·mg⁻¹).
Te-Bi2Se3-x@C/S cathodes achieved specific capacities of 1508 mAh·g⁻¹ at 0.1 C and 655 mAh·g⁻¹ at 5 C, alongside cycle stability across 1000 cycles.
Under high sulfur loading of 6.4 mg·cm⁻², the cathode delivered an areal capacity exceeding 8 mAh·cm⁻² at 0.1 C, retaining 6.4 mAh·cm⁻² after 300 cycles with lean electrolyte.

Cite This Study

Huang et al. (2024) studied this question.

synapsesocial.com/papers/6a014bee581c6e761e780935 https://doi.org/10.1002/ange.202420488

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December 17, 2024Angewandte Chemie

Anionic Doping in Layered Transition Metal Chalcogenides for Robust Lithium‐Sulfur Batteries

View Full Paper

Ask AI

Bookmark

Authors

CHChen HuangShanghai Maritime University JYJing YuConsejo Superior de Investigaciones Científicas CZChaoyue ZhangShihezi University

Discussion

Member takes

Overview

Experimental study demonstrates enhanced catalytic kinetics in lithium-sulfur batteries using tellurium-doped bismuth selenide, indicating a viable pathway for high-capacity energy storage.

Key Points

To accelerate slow reaction kinetics and improve polysulfide conversion in lithium-sulfur battery cathodes using an anionic-doped transition metal chalcogenide catalyst.
Synthesized tellurium-doped, carbon-supported bismuth selenide with selenium vacancies (Te-Bi2Se3-x@C) as a sulfur host.
Characterized structural, electronic, and coordination changes using X-ray absorption spectroscopy and in situ X-ray diffraction.
Evaluated electrochemical performance under high sulfur loading (6.4 mg·cm⁻²) and lean electrolyte conditions (6.8 μL·mg⁻¹).
Te-Bi2Se3-x@C/S cathodes achieved specific capacities of 1508 mAh·g⁻¹ at 0.1 C and 655 mAh·g⁻¹ at 5 C, alongside cycle stability across 1000 cycles.
Under high sulfur loading of 6.4 mg·cm⁻², the cathode delivered an areal capacity exceeding 8 mAh·cm⁻² at 0.1 C, retaining 6.4 mAh·cm⁻² after 300 cycles with lean electrolyte.

Cite This Study

Huang et al. (2024) studied this question.

synapsesocial.com/papers/6a014bee581c6e761e780935 https://doi.org/10.1002/ange.202420488

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