Investigation of electrochemical supercapacitor performance of WO3-CdS nanocomposites in 1 M H2SO4 electrolyte prepared by microwave-assisted method

P. Periasamy; T. Krishnakumar; V. P. Devarajan; M. Sandhiya; M. Sathish; M. Chavali

doi:10.1016/j.matlet.2020.127998

Investigation of electrochemical supercapacitor performance of WO₃-CdS nanocomposites in 1 M H₂SO₄ electrolyte prepared by microwave-assisted method

P. Periasamy, T. Krishnakumar, V. P. Devarajan, M. Sandhiya, M. Sathish, M. Chavali

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

23 Scopus citations

Abstract

In this work, we have prepared WO₃-CdS nanocomposites for supercapacitor electrode by Microwave-Assisted Method. The orthorhombic and monoclinic mixed structure of WO₃ and hexagonal structure of CdS was observed by XRD pattern. The FESEM micrograph showed the irregular particle shape and HRTEM images demonstrated the small rod shape morphology with irregularity. The EDAX analysis confirmed the presence of W and Cd elements. From the electrochemical analysis, we have calculated the maximum capacitance as 650 F/g for WO_3-CdS (6 wt%) electrode. The long cycle test showed 133% of capacitance retention with 100% Coulombic efficiency.

Original language	English
Article number	127998
Journal	Materials Letters
Volume	274
DOIs	https://doi.org/10.1016/j.matlet.2020.127998
State	Published - 1 Sep 2020
Externally published	Yes

Keywords

Energy storage and conversion
Nanocomposites
Supercapacitor
WO-CdS

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2020.127998

Cite this

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title = "Investigation of electrochemical supercapacitor performance of WO3-CdS nanocomposites in 1 M H2SO4 electrolyte prepared by microwave-assisted method",

abstract = "In this work, we have prepared WO3-CdS nanocomposites for supercapacitor electrode by Microwave-Assisted Method. The orthorhombic and monoclinic mixed structure of WO3 and hexagonal structure of CdS was observed by XRD pattern. The FESEM micrograph showed the irregular particle shape and HRTEM images demonstrated the small rod shape morphology with irregularity. The EDAX analysis confirmed the presence of W and Cd elements. From the electrochemical analysis, we have calculated the maximum capacitance as 650 F/g for WO3-CdS (6 wt%) electrode. The long cycle test showed 133% of capacitance retention with 100% Coulombic efficiency.",

keywords = "Energy storage and conversion, Nanocomposites, Supercapacitor, WO-CdS",

author = "P. Periasamy and T. Krishnakumar and Devarajan, {V. P.} and M. Sandhiya and M. Sathish and M. Chavali",

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TY - JOUR

T1 - Investigation of electrochemical supercapacitor performance of WO3-CdS nanocomposites in 1 M H2SO4 electrolyte prepared by microwave-assisted method

AU - Periasamy, P.

AU - Krishnakumar, T.

AU - Devarajan, V. P.

AU - Sandhiya, M.

AU - Sathish, M.

AU - Chavali, M.

PY - 2020/9/1

Y1 - 2020/9/1

N2 - In this work, we have prepared WO3-CdS nanocomposites for supercapacitor electrode by Microwave-Assisted Method. The orthorhombic and monoclinic mixed structure of WO3 and hexagonal structure of CdS was observed by XRD pattern. The FESEM micrograph showed the irregular particle shape and HRTEM images demonstrated the small rod shape morphology with irregularity. The EDAX analysis confirmed the presence of W and Cd elements. From the electrochemical analysis, we have calculated the maximum capacitance as 650 F/g for WO3-CdS (6 wt%) electrode. The long cycle test showed 133% of capacitance retention with 100% Coulombic efficiency.

AB - In this work, we have prepared WO3-CdS nanocomposites for supercapacitor electrode by Microwave-Assisted Method. The orthorhombic and monoclinic mixed structure of WO3 and hexagonal structure of CdS was observed by XRD pattern. The FESEM micrograph showed the irregular particle shape and HRTEM images demonstrated the small rod shape morphology with irregularity. The EDAX analysis confirmed the presence of W and Cd elements. From the electrochemical analysis, we have calculated the maximum capacitance as 650 F/g for WO3-CdS (6 wt%) electrode. The long cycle test showed 133% of capacitance retention with 100% Coulombic efficiency.

KW - Energy storage and conversion

KW - Nanocomposites

KW - Supercapacitor

KW - WO-CdS

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