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Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery

Molybdenum trioxide (MoO(3)) is emerging as a hugely competitive cathode material for aqueous zinc ion batteries (ZIBs) for its high theoretical capacity and electrochemical activity. Nevertheless, owing to its undesirable electronic transport capability and poor structural stability, the practical...

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Autores principales: He, Yachen, Xue, Weiwei, Huang, Yifeng, Tang, Hongwei, Wang, Guangxia, Zheng, Dezhou, Xu, Wei, Wang, Fuxin, Lu, Xihong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10196885/
https://www.ncbi.nlm.nih.gov/pubmed/37213338
http://dx.doi.org/10.1039/d3ra02350h
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author He, Yachen
Xue, Weiwei
Huang, Yifeng
Tang, Hongwei
Wang, Guangxia
Zheng, Dezhou
Xu, Wei
Wang, Fuxin
Lu, Xihong
author_facet He, Yachen
Xue, Weiwei
Huang, Yifeng
Tang, Hongwei
Wang, Guangxia
Zheng, Dezhou
Xu, Wei
Wang, Fuxin
Lu, Xihong
author_sort He, Yachen
collection PubMed
description Molybdenum trioxide (MoO(3)) is emerging as a hugely competitive cathode material for aqueous zinc ion batteries (ZIBs) for its high theoretical capacity and electrochemical activity. Nevertheless, owing to its undesirable electronic transport capability and poor structural stability, the practical capacity and cycling performance of MoO(3) are yet unsatisfactory, which greatly blocks its commercial use. In this work, we report an effective approach to first synthesise nanosized MoO(3−x) materials to provide more active specific surface areas, while improving the capacity and cycle life of MoO(3) by introducing low valence Mo and coated polypyrrole (PPy). MoO(3) nanoparticles with low-valence-state Mo and PPy coating (denoted as MoO(3−x)@PPy) are synthesized via a solvothermal method and subsequent electrodeposition process. The as-prepared MoO(3−x)@PPy cathode delivers a high reversible capacity of 212.4 mA h g(−1) at 1 A g(−1) with good cycling life (more than 75% capacity retention after 500 cycles). In contrast, the original commercial MoO(3) sample only obtains a capacity of 99.3 mA h g(−1) at 1 A g(−1), and a cycling stability of 10% capacity retention over 500 cycles. Additionally, the fabricated Zn//MoO(3−x)@PPy battery obtains a maximum energy density of 233.6 W h kg(−1) and a power density of 11.2 kW kg(−1). Our results provide an efficient and practical approach to enhance commercial MoO(3) materials as high-performance cathodes for AZIBs.
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spelling pubmed-101968852023-05-20 Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery He, Yachen Xue, Weiwei Huang, Yifeng Tang, Hongwei Wang, Guangxia Zheng, Dezhou Xu, Wei Wang, Fuxin Lu, Xihong RSC Adv Chemistry Molybdenum trioxide (MoO(3)) is emerging as a hugely competitive cathode material for aqueous zinc ion batteries (ZIBs) for its high theoretical capacity and electrochemical activity. Nevertheless, owing to its undesirable electronic transport capability and poor structural stability, the practical capacity and cycling performance of MoO(3) are yet unsatisfactory, which greatly blocks its commercial use. In this work, we report an effective approach to first synthesise nanosized MoO(3−x) materials to provide more active specific surface areas, while improving the capacity and cycle life of MoO(3) by introducing low valence Mo and coated polypyrrole (PPy). MoO(3) nanoparticles with low-valence-state Mo and PPy coating (denoted as MoO(3−x)@PPy) are synthesized via a solvothermal method and subsequent electrodeposition process. The as-prepared MoO(3−x)@PPy cathode delivers a high reversible capacity of 212.4 mA h g(−1) at 1 A g(−1) with good cycling life (more than 75% capacity retention after 500 cycles). In contrast, the original commercial MoO(3) sample only obtains a capacity of 99.3 mA h g(−1) at 1 A g(−1), and a cycling stability of 10% capacity retention over 500 cycles. Additionally, the fabricated Zn//MoO(3−x)@PPy battery obtains a maximum energy density of 233.6 W h kg(−1) and a power density of 11.2 kW kg(−1). Our results provide an efficient and practical approach to enhance commercial MoO(3) materials as high-performance cathodes for AZIBs. The Royal Society of Chemistry 2023-05-19 /pmc/articles/PMC10196885/ /pubmed/37213338 http://dx.doi.org/10.1039/d3ra02350h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
He, Yachen
Xue, Weiwei
Huang, Yifeng
Tang, Hongwei
Wang, Guangxia
Zheng, Dezhou
Xu, Wei
Wang, Fuxin
Lu, Xihong
Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery
title Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery
title_full Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery
title_fullStr Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery
title_full_unstemmed Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery
title_short Boosting the capacity and stability of a MoO(3) cathode via valence regulation and polypyrrole coating for a rechargeable Zn ion battery
title_sort boosting the capacity and stability of a moo(3) cathode via valence regulation and polypyrrole coating for a rechargeable zn ion battery
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10196885/
https://www.ncbi.nlm.nih.gov/pubmed/37213338
http://dx.doi.org/10.1039/d3ra02350h
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