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Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors

The purpose of this work is to explore the application prospects of WS(2) as an active material in flexible electrodes. Since WS(2) has similar disadvantages as other two-dimensional layered materials, such as easily stacking, it is essential to develop a three-dimensional structure for its assembly...

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Autores principales: Yang, Xinyu, Li, Jiahui, Hou, Chengyi, Zhang, Qinghong, Li, Yaogang, Wang, Hongzhi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7303003/
https://www.ncbi.nlm.nih.gov/pubmed/32596203
http://dx.doi.org/10.3389/fchem.2020.00442
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author Yang, Xinyu
Li, Jiahui
Hou, Chengyi
Zhang, Qinghong
Li, Yaogang
Wang, Hongzhi
author_facet Yang, Xinyu
Li, Jiahui
Hou, Chengyi
Zhang, Qinghong
Li, Yaogang
Wang, Hongzhi
author_sort Yang, Xinyu
collection PubMed
description The purpose of this work is to explore the application prospects of WS(2) as an active material in flexible electrodes. Since WS(2) has similar disadvantages as other two-dimensional layered materials, such as easily stacking, it is essential to develop a three-dimensional structure for its assembly in terms of electrochemical performance. In addition, the low conductivity of WS(2) limits its application as flexible electrode material. In order to solve these problems, carbon nanotubes (CNTs) are introduced to improve the conductivity of hybrid WS(2) materials and to construct a skeleton structure during WS(2) assembly. Compared with pure CNTs and WS(2), the WS(2)@CNT thin-film hybrid with a unique skeleton structure has a high specific area capacitance that reaches a maximum of 752.53 mF/cm(2) at a scan rate 20 mV/s. Meanwhile, this hybrid electrode material shows good stability, with only 1.28% loss of its capacitance over 10,000 cycles. In order to prove its feasibility for practical application, a quasi-solid-state flexible supercapacitor is assembled, and its electrochemical characteristics (the specific area capacitance is 574.65 mF/cm(2)) and bendability (under bending to 135° 10, 000 times, 23.12% loss at a scan rate of 100 mV/s) are further investigated and prove its potential in this field.
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spelling pubmed-73030032020-06-26 Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors Yang, Xinyu Li, Jiahui Hou, Chengyi Zhang, Qinghong Li, Yaogang Wang, Hongzhi Front Chem Chemistry The purpose of this work is to explore the application prospects of WS(2) as an active material in flexible electrodes. Since WS(2) has similar disadvantages as other two-dimensional layered materials, such as easily stacking, it is essential to develop a three-dimensional structure for its assembly in terms of electrochemical performance. In addition, the low conductivity of WS(2) limits its application as flexible electrode material. In order to solve these problems, carbon nanotubes (CNTs) are introduced to improve the conductivity of hybrid WS(2) materials and to construct a skeleton structure during WS(2) assembly. Compared with pure CNTs and WS(2), the WS(2)@CNT thin-film hybrid with a unique skeleton structure has a high specific area capacitance that reaches a maximum of 752.53 mF/cm(2) at a scan rate 20 mV/s. Meanwhile, this hybrid electrode material shows good stability, with only 1.28% loss of its capacitance over 10,000 cycles. In order to prove its feasibility for practical application, a quasi-solid-state flexible supercapacitor is assembled, and its electrochemical characteristics (the specific area capacitance is 574.65 mF/cm(2)) and bendability (under bending to 135° 10, 000 times, 23.12% loss at a scan rate of 100 mV/s) are further investigated and prove its potential in this field. Frontiers Media S.A. 2020-06-12 /pmc/articles/PMC7303003/ /pubmed/32596203 http://dx.doi.org/10.3389/fchem.2020.00442 Text en Copyright © 2020 Yang, Li, Hou, Zhang, Li and Wang. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Yang, Xinyu
Li, Jiahui
Hou, Chengyi
Zhang, Qinghong
Li, Yaogang
Wang, Hongzhi
Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors
title Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors
title_full Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors
title_fullStr Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors
title_full_unstemmed Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors
title_short Skeleton-Structure WS(2)@CNT Thin-Film Hybrid Electrodes for High-Performance Quasi-Solid-State Flexible Supercapacitors
title_sort skeleton-structure ws(2)@cnt thin-film hybrid electrodes for high-performance quasi-solid-state flexible supercapacitors
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7303003/
https://www.ncbi.nlm.nih.gov/pubmed/32596203
http://dx.doi.org/10.3389/fchem.2020.00442
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