Facile synthesis of MnMoO4@MWCNT and their electrochemical performance in aqueous asymmetric supercapacitor

Jai Bhagwan; Sk Khaja Hussain; B. N.Vamsi Krishna; Jae Su Yu

doi:10.1016/j.jallcom.2020.157874

Facile synthesis of MnMoO₄@MWCNT and their electrochemical performance in aqueous asymmetric supercapacitor

Jai Bhagwan, Sk Khaja Hussain, B. N.Vamsi Krishna, Jae Su Yu

Department of Chemical and Biochemical Engineering

Kyung Hee University

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

47 Scopus citations

Abstract

The MnMoO₄@multi-walled carbon nanotube (MWCNT) composite is prepared successfully by a hydrothermal method. The composite is subjected as an electrode material for supercapacitors, showing excellent electrochemical feature with a high specific capacitance of 1017 F g⁻¹ at 1 A g⁻¹. The electrochemical behavior of the composite is compared with the MnMoO₄ electrode material. Owing to high performance of composite, asymmetric supercapacitor (ASC) composed of MnMoO₄@MWCNT and activated carbon is fabricated with an aqueous electrolyte. The device delivers a high energy density of 18.1 W h kg⁻¹ at the power density of 362.4 W kg⁻¹. With good energy storage properties of electrode material, it could store sufficient charge to power the twelve red color light-emitting diodes. Furthermore, a motor fan is rotated by ASC device. A digital watch is also powered by ASCs. The obtained results suggest that the prepared MnMoO₄@MWCNT composite material is promising for energy storage devices.

Original language	English
Article number	157874
Journal	Journal of Alloys and Compounds
Volume	856
DOIs	https://doi.org/10.1016/j.jallcom.2020.157874
State	Published - 5 Mar 2021

Keywords

Asymmetric supercapacitor
Energy and power densities
MnMoO@MWCNT
Specific capacitance

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title = "Facile synthesis of MnMoO4@MWCNT and their electrochemical performance in aqueous asymmetric supercapacitor",

abstract = "The MnMoO4@multi-walled carbon nanotube (MWCNT) composite is prepared successfully by a hydrothermal method. The composite is subjected as an electrode material for supercapacitors, showing excellent electrochemical feature with a high specific capacitance of 1017 F g−1 at 1 A g−1. The electrochemical behavior of the composite is compared with the MnMoO4 electrode material. Owing to high performance of composite, asymmetric supercapacitor (ASC) composed of MnMoO4@MWCNT and activated carbon is fabricated with an aqueous electrolyte. The device delivers a high energy density of 18.1 W h kg−1 at the power density of 362.4 W kg−1. With good energy storage properties of electrode material, it could store sufficient charge to power the twelve red color light-emitting diodes. Furthermore, a motor fan is rotated by ASC device. A digital watch is also powered by ASCs. The obtained results suggest that the prepared MnMoO4@MWCNT composite material is promising for energy storage devices.",

keywords = "Asymmetric supercapacitor, Energy and power densities, MnMoO@MWCNT, Specific capacitance",

author = "Jai Bhagwan and Hussain, {Sk Khaja} and Krishna, {B. N.Vamsi} and Yu, {Jae Su}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

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doi = "10.1016/j.jallcom.2020.157874",

language = "English",

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T1 - Facile synthesis of MnMoO4@MWCNT and their electrochemical performance in aqueous asymmetric supercapacitor

AU - Bhagwan, Jai

AU - Hussain, Sk Khaja

AU - Krishna, B. N.Vamsi

AU - Yu, Jae Su

PY - 2021/3/5

Y1 - 2021/3/5

N2 - The MnMoO4@multi-walled carbon nanotube (MWCNT) composite is prepared successfully by a hydrothermal method. The composite is subjected as an electrode material for supercapacitors, showing excellent electrochemical feature with a high specific capacitance of 1017 F g−1 at 1 A g−1. The electrochemical behavior of the composite is compared with the MnMoO4 electrode material. Owing to high performance of composite, asymmetric supercapacitor (ASC) composed of MnMoO4@MWCNT and activated carbon is fabricated with an aqueous electrolyte. The device delivers a high energy density of 18.1 W h kg−1 at the power density of 362.4 W kg−1. With good energy storage properties of electrode material, it could store sufficient charge to power the twelve red color light-emitting diodes. Furthermore, a motor fan is rotated by ASC device. A digital watch is also powered by ASCs. The obtained results suggest that the prepared MnMoO4@MWCNT composite material is promising for energy storage devices.

AB - The MnMoO4@multi-walled carbon nanotube (MWCNT) composite is prepared successfully by a hydrothermal method. The composite is subjected as an electrode material for supercapacitors, showing excellent electrochemical feature with a high specific capacitance of 1017 F g−1 at 1 A g−1. The electrochemical behavior of the composite is compared with the MnMoO4 electrode material. Owing to high performance of composite, asymmetric supercapacitor (ASC) composed of MnMoO4@MWCNT and activated carbon is fabricated with an aqueous electrolyte. The device delivers a high energy density of 18.1 W h kg−1 at the power density of 362.4 W kg−1. With good energy storage properties of electrode material, it could store sufficient charge to power the twelve red color light-emitting diodes. Furthermore, a motor fan is rotated by ASC device. A digital watch is also powered by ASCs. The obtained results suggest that the prepared MnMoO4@MWCNT composite material is promising for energy storage devices.

KW - Asymmetric supercapacitor

KW - Energy and power densities

KW - MnMoO@MWCNT

KW - Specific capacitance

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DO - 10.1016/j.jallcom.2020.157874

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JF - Journal of Alloys and Compounds

M1 - 157874

ER -

Facile synthesis of MnMoO₄@MWCNT and their electrochemical performance in aqueous asymmetric supercapacitor

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Keywords

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