Catalytic Boosting Bidirectional Polysulfide Redox using Co0.85Se/C Hollow Structure for High-Performance Lithium-Sulfur Batteries

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Author(s)Zhang, Xingyuan
Author(s)Gu, Honghui
Author(s)Shen, Chao
Author(s)Wei, Bingqing
Author(s)Wang, Jian-Gan
Date Accessioned2022-04-06T14:18:02Z
Date Available2022-04-06T14:18:02Z
Publication Date2022-02-17
DescriptionThis is the peer reviewed version of the following article: Zhang, Xingyuan, Honghui Gu, Chao Shen, Bingqing Wei, and Jian‐Gan Wang. “Catalytic Boosting Bidirectional Polysulfide Redox Using Co0.85 Se/C Hollow Structure for High‐Performance Lithium‐Sulfur Batteries.” ChemElectroChem 9, no. 4 (February 17, 2022). https://doi.org/10.1002/celc.202101557., which has been published in final form at https://doi.org/10.1002/celc.202101557. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. This article will be embargoed until 02/17/2023.en_US
AbstractAchieving effective adsorption and fast conversion of soluble polysulfides confined in the sulfur cathode is critical yet challenging for building high-performance lithium-sulfur batteries. Herein, we construct a unique hollow-structured Co0.85Se/C as a separator modifier (CSPP) to effectively suppress the polysulfide shuttle effect. The Co0.85Se/C demonstrates strong anchoring with polysulfide species and smooth bidirectional electrocatalysis. The unique mesoporous hollow architecture affords sufficient catalytic sites and Li+ diffusion channels for promoting the reaction kinetics. Benefiting from the merits, the CSPP-cell could yield a superior electrochemical utilization of active sulfur, excellent rate capability (679 mAh g−1 at 5 C), and stable cycling performance with an ultralow fading rate of 0.056 % per cycle over 500 cycles. The work highlights great promise of developing cobalt-based materials as kinetic regulators for highly stable lithium-sulfur batteries.en_US
SponsorThe authors appreciate the financial supports from National Natural Science Foundation of China (51772249 and 51821091), and the Fundamental Research Funds for the Central Universities (D5000210894 and 3102019JC005). We also thank the Analytical & Testing Center of Northwestern Polytechnical University for TEM analysis.en_US
CitationZhang, Xingyuan, Honghui Gu, Chao Shen, Bingqing Wei, and Jian‐Gan Wang. “Catalytic Boosting Bidirectional Polysulfide Redox Using Co0.85 Se/C Hollow Structure for High‐Performance Lithium‐Sulfur Batteries.” ChemElectroChem 9, no. 4 (February 17, 2022). https://doi.org/10.1002/celc.202101557.en_US
ISSN2196-0216
URLhttps://udspace.udel.edu/handle/19716/30751
Languageen_USen_US
PublisherChemElectroChemen_US
KeywordsCo0.85Seen_US
Keywordslithium-sulfur batteriesen_US
Keywordshollow structureen_US
Keywordscatalytic conversionen_US
Keywordsseparatorsen_US
TitleCatalytic Boosting Bidirectional Polysulfide Redox using Co0.85Se/C Hollow Structure for High-Performance Lithium-Sulfur Batteriesen_US
TypeArticleen_US
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