Uniformly Dispersed Sb-Nanodot Constructed by In Situ Confined Polymerization of Ionic Liquids for High-Performance Potassium-Ion Batteries

Cunliang Zhang; Zhengyuan Chen; Haojie Zhang; Yanmei Liu; Wei Wei; Yanli Zhou; Maotian Xu

doi:10.3390/molecules28135212

Molecules (Jul 2023)

Uniformly Dispersed Sb-Nanodot Constructed by In Situ Confined Polymerization of Ionic Liquids for High-Performance Potassium-Ion Batteries

Cunliang Zhang,
Zhengyuan Chen,
Haojie Zhang,
Yanmei Liu,
Wei Wei,
Yanli Zhou,
Maotian Xu

Affiliations

Cunliang Zhang: Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
Zhengyuan Chen: School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
Haojie Zhang: Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
Yanmei Liu: Department of Public Science, Shangqiu Medical College, Shangqiu 476000, China
Wei Wei: Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
Yanli Zhou: Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
Maotian Xu: Henan Key Laboratory of Bimolecular Reorganization and Sensing, Henan Engineering Center of New Energy Battery Materials, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China

DOI: https://doi.org/10.3390/molecules28135212
Journal volume & issue: Vol. 28, no. 13
p. 5212

Abstract

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Antimony (Sb) is a potential candidate anode for potassium-ion batteries (PIBs) owing to its high theoretical capacity. However; in the process of potassium alloying reaction; the huge volume expansion (about 407%) leads to pulverization of active substance as well as loss of electrical contact resulting in rapidly declining capacity. Herein; uniformly dispersed Sb-Nanodot in carbon frameworks (Sb-ND@C) were constructed by in situ confined polymerization of ionic liquids. Attributed to the uniformly dispersed Sb-ND and confinement effect of carbon frameworks; as anode for PIBs; Sb-ND@C delivered a superior rate capability (320.1 mA h g−1 at 5 A g−1) and an outstanding cycling stability (486 mA h g−1 after 1000 cycles; achieving 89.8% capacity retention). This work offers a facile route to prepare highly dispersed metal-Nanodot via the in situ polymerization of ionic liquid for high-performance metal-ion batteries

Published in Molecules

ISSN: 1420-3049 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/molecules

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