VSe                         2                         /carbon-nanotube compound for all solid-state flexible in-plane supercapacitor

Chaolun Wang; Xing Wu; Hejun Xu; Yujin Zhu; Fang Liang; Chen Luo; Yin Xia; Xinying Xie; Jian Zhang; Chungang Duan

doi:10.1063/1.5078555

VSe ₂ /carbon-nanotube compound for all solid-state flexible in-plane supercapacitor

Chaolun Wang, Xing Wu, Hejun Xu, Yujin Zhu, Fang Liang, Chen Luo, Yin Xia, Xinying Xie, Jian Zhang, Chungang Duan

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Two-dimensional (2D) metallic transition-metal dichalcogenide (MTMD)/carbon-nanotube (CNT) compounds are competitive electrode materials for solid-state flexible in-plane supercapacitors, resulting from the synergistic effect of the large specific surface area of 2D MTMDs and the excellent mechanical properties of the CNT. In this paper, the high-quality VSe ₂ /CNT electrode material is prepared by the one-step chemical vapor deposition (CVD) method. The CVD method offers a facile and safe way to synthesize a pure VSe ₂ /CNT compound. The VSe ₂ nanosheets are vertically grown on the surface of the CNT cluster. The vertical configuration of the VSe ₂ nanosheets on the conductive CNT cluster takes full advantage of the large specific surface area of the VSe ₂ nanosheets to store charges. The ductile and conductive CNT cluster offers good mechanical and electrical connections to the VSe ₂ nanosheets. The VSe ₂ /CNT compound is applied as the electrode material of a solid-state flexible in-plane supercapacitor which achieves a specific area capacitance of 1854 μF/cm ² and stable cycling stability, ∼7% degradation after 10 000 times of current cycling. The VSe ₂ /CNT also presents a desirable mechanical stability, and ∼ 90% capacitance is retained after bending up to 40°. This work promotes the application of 2D MTMD compounds in the field of energy storage and wearable devices.

Original language	English
Article number	023902
Journal	Applied Physics Letters
Volume	114
Issue number	2
DOIs	https://doi.org/10.1063/1.5078555
State	Published - 14 Jan 2019

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@article{5b0c76da8e8242dda284bdf6dbc5a89c,

title = " VSe 2 /carbon-nanotube compound for all solid-state flexible in-plane supercapacitor ",

abstract = " Two-dimensional (2D) metallic transition-metal dichalcogenide (MTMD)/carbon-nanotube (CNT) compounds are competitive electrode materials for solid-state flexible in-plane supercapacitors, resulting from the synergistic effect of the large specific surface area of 2D MTMDs and the excellent mechanical properties of the CNT. In this paper, the high-quality VSe 2 /CNT electrode material is prepared by the one-step chemical vapor deposition (CVD) method. The CVD method offers a facile and safe way to synthesize a pure VSe 2 /CNT compound. The VSe 2 nanosheets are vertically grown on the surface of the CNT cluster. The vertical configuration of the VSe 2 nanosheets on the conductive CNT cluster takes full advantage of the large specific surface area of the VSe 2 nanosheets to store charges. The ductile and conductive CNT cluster offers good mechanical and electrical connections to the VSe 2 nanosheets. The VSe 2 /CNT compound is applied as the electrode material of a solid-state flexible in-plane supercapacitor which achieves a specific area capacitance of 1854 μF/cm 2 and stable cycling stability, ∼7\% degradation after 10 000 times of current cycling. The VSe 2 /CNT also presents a desirable mechanical stability, and ∼ 90\% capacitance is retained after bending up to 40°. This work promotes the application of 2D MTMD compounds in the field of energy storage and wearable devices.",

author = "Chaolun Wang and Xing Wu and Hejun Xu and Yujin Zhu and Fang Liang and Chen Luo and Yin Xia and Xinying Xie and Jian Zhang and Chungang Duan",

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T1 - VSe 2 /carbon-nanotube compound for all solid-state flexible in-plane supercapacitor

AU - Wang, Chaolun

AU - Wu, Xing

AU - Xu, Hejun

AU - Zhu, Yujin

AU - Liang, Fang

AU - Luo, Chen

AU - Xia, Yin

AU - Xie, Xinying

AU - Zhang, Jian

AU - Duan, Chungang

PY - 2019/1/14

Y1 - 2019/1/14

N2 - Two-dimensional (2D) metallic transition-metal dichalcogenide (MTMD)/carbon-nanotube (CNT) compounds are competitive electrode materials for solid-state flexible in-plane supercapacitors, resulting from the synergistic effect of the large specific surface area of 2D MTMDs and the excellent mechanical properties of the CNT. In this paper, the high-quality VSe 2 /CNT electrode material is prepared by the one-step chemical vapor deposition (CVD) method. The CVD method offers a facile and safe way to synthesize a pure VSe 2 /CNT compound. The VSe 2 nanosheets are vertically grown on the surface of the CNT cluster. The vertical configuration of the VSe 2 nanosheets on the conductive CNT cluster takes full advantage of the large specific surface area of the VSe 2 nanosheets to store charges. The ductile and conductive CNT cluster offers good mechanical and electrical connections to the VSe 2 nanosheets. The VSe 2 /CNT compound is applied as the electrode material of a solid-state flexible in-plane supercapacitor which achieves a specific area capacitance of 1854 μF/cm 2 and stable cycling stability, ∼7% degradation after 10 000 times of current cycling. The VSe 2 /CNT also presents a desirable mechanical stability, and ∼ 90% capacitance is retained after bending up to 40°. This work promotes the application of 2D MTMD compounds in the field of energy storage and wearable devices.

AB - Two-dimensional (2D) metallic transition-metal dichalcogenide (MTMD)/carbon-nanotube (CNT) compounds are competitive electrode materials for solid-state flexible in-plane supercapacitors, resulting from the synergistic effect of the large specific surface area of 2D MTMDs and the excellent mechanical properties of the CNT. In this paper, the high-quality VSe 2 /CNT electrode material is prepared by the one-step chemical vapor deposition (CVD) method. The CVD method offers a facile and safe way to synthesize a pure VSe 2 /CNT compound. The VSe 2 nanosheets are vertically grown on the surface of the CNT cluster. The vertical configuration of the VSe 2 nanosheets on the conductive CNT cluster takes full advantage of the large specific surface area of the VSe 2 nanosheets to store charges. The ductile and conductive CNT cluster offers good mechanical and electrical connections to the VSe 2 nanosheets. The VSe 2 /CNT compound is applied as the electrode material of a solid-state flexible in-plane supercapacitor which achieves a specific area capacitance of 1854 μF/cm 2 and stable cycling stability, ∼7% degradation after 10 000 times of current cycling. The VSe 2 /CNT also presents a desirable mechanical stability, and ∼ 90% capacitance is retained after bending up to 40°. This work promotes the application of 2D MTMD compounds in the field of energy storage and wearable devices.

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VSe ₂ /carbon-nanotube compound for all solid-state flexible in-plane supercapacitor

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