Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage

Poor Li+ diffusion kinetics and severe structure deterioration limit application of VS4 in lithium-ion batteries. Herein, three-dimensional honeycomb macroporous carbon is synthesized by polyvinylpyrrolidone, using compactly stacked SiO2 microsphere as the sacrificial template. Then, VS4 nanoparticl...

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Main Authors: Yuan, Yongfeng, Zhang, Tengsheng, Yang, Z. Y., Yao, Zhujun, Wang, Bingxu, Yang, Quan Hong, Guo, Shaoyi
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/172871
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1728712023-12-27T05:30:11Z Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage Yuan, Yongfeng Zhang, Tengsheng Yang, Z. Y. Yao, Zhujun Wang, Bingxu Yang, Quan Hong Guo, Shaoyi School of Materials Science and Engineering Engineering::Materials Lithium-Ion Batteries Carbon Poor Li+ diffusion kinetics and severe structure deterioration limit application of VS4 in lithium-ion batteries. Herein, three-dimensional honeycomb macroporous carbon is synthesized by polyvinylpyrrolidone, using compactly stacked SiO2 microsphere as the sacrificial template. Then, VS4 nanoparticles and nanoflakes are in-situ grown in the macropores of three-dimensional honeycomb carbon by solvothermal reaction. Nano VS4 is anchored to polyvinylpyrrolidone-derived amorphous carbon by strong chemical bonds. The composite exhibits extraordinary rate capability (533 mAh g−1 at 5 A g−1), high reversible capacity (1150 mAh g−1 at 0.2 A g−1), and stable long-term cycling performance (1253 mAh g−1 after 200 cycles at 0.2 A g−1, 960 mAh g−1 after 500 cycles at 1 A g−1, 201 mAh g−1 after 3500 cycles at 5 A g−1). The specific capacity of the composite includes VS4 and carbon. The intercalation reaction of VS4 contributes to the major capacity. The kinetics properties are significantly improved, including the dominant capacitive behavior, high diffusion coefficients of Li ions, low reaction impedance. Outstanding lithium storage performance is ascribed to well-dispersed nano VS4 in the highly conductive honeycomb carbon macropores and the intimately coupling between them by chemical bonds that ensure the excellent structure stability and fast electron/ion transfer of VS4. This work was financially supported by Natural Science Foundation of Zhejiang Province, China (No. LY21E020011) and National Natural Science Foundation of China (No. 52102315), and major project (22020237-J) of Changshan Research Institute, Zhejiang Sci-Tech University. 2023-12-27T05:30:10Z 2023-12-27T05:30:10Z 2023 Journal Article Yuan, Y., Zhang, T., Yang, Z. Y., Yao, Z., Wang, B., Yang, Q. H. & Guo, S. (2023). Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage. Journal of Alloys and Compounds, 942, 169021-. https://dx.doi.org/10.1016/j.jallcom.2023.169021 0925-8388 https://hdl.handle.net/10356/172871 10.1016/j.jallcom.2023.169021 2-s2.0-85149776764 942 169021 en Journal of Alloys and Compounds © 2023 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Lithium-Ion Batteries
Carbon
spellingShingle Engineering::Materials
Lithium-Ion Batteries
Carbon
Yuan, Yongfeng
Zhang, Tengsheng
Yang, Z. Y.
Yao, Zhujun
Wang, Bingxu
Yang, Quan Hong
Guo, Shaoyi
Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage
description Poor Li+ diffusion kinetics and severe structure deterioration limit application of VS4 in lithium-ion batteries. Herein, three-dimensional honeycomb macroporous carbon is synthesized by polyvinylpyrrolidone, using compactly stacked SiO2 microsphere as the sacrificial template. Then, VS4 nanoparticles and nanoflakes are in-situ grown in the macropores of three-dimensional honeycomb carbon by solvothermal reaction. Nano VS4 is anchored to polyvinylpyrrolidone-derived amorphous carbon by strong chemical bonds. The composite exhibits extraordinary rate capability (533 mAh g−1 at 5 A g−1), high reversible capacity (1150 mAh g−1 at 0.2 A g−1), and stable long-term cycling performance (1253 mAh g−1 after 200 cycles at 0.2 A g−1, 960 mAh g−1 after 500 cycles at 1 A g−1, 201 mAh g−1 after 3500 cycles at 5 A g−1). The specific capacity of the composite includes VS4 and carbon. The intercalation reaction of VS4 contributes to the major capacity. The kinetics properties are significantly improved, including the dominant capacitive behavior, high diffusion coefficients of Li ions, low reaction impedance. Outstanding lithium storage performance is ascribed to well-dispersed nano VS4 in the highly conductive honeycomb carbon macropores and the intimately coupling between them by chemical bonds that ensure the excellent structure stability and fast electron/ion transfer of VS4.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Yuan, Yongfeng
Zhang, Tengsheng
Yang, Z. Y.
Yao, Zhujun
Wang, Bingxu
Yang, Quan Hong
Guo, Shaoyi
format Article
author Yuan, Yongfeng
Zhang, Tengsheng
Yang, Z. Y.
Yao, Zhujun
Wang, Bingxu
Yang, Quan Hong
Guo, Shaoyi
author_sort Yuan, Yongfeng
title Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage
title_short Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage
title_full Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage
title_fullStr Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage
title_full_unstemmed Nano VS₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage
title_sort nano vs₄ in-situ grown in three-dimensional honeycomb macroporous carbon enabling high-rate and long-life lithium storage
publishDate 2023
url https://hdl.handle.net/10356/172871
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