Electrochemically reduced graphene oxide/nano-WO composite-based supercapacitor electrodes for better energy storage

Tanushree Ghosh; Suchita Kandpal; Manushree Tanwar; Devesh K. Pathak; Chanchal Rani; T. Anusuya; Vivek Kumar; Rajesh Kumar; Anjali Chaudhary

doi:10.1140/epjs/s11734-022-00542-5

2022 Impact factor 2.8

Special Topics

Advances in Low-Dimensional and Nanostructured Materials for Sustainable Energy Conversion and Storage

Eur. Phys. J. Spec. Top. (2022) 231: 2927-2932
https://doi.org/10.1140/epjs/s11734-022-00542-5

Regular Article

Electrochemically reduced graphene oxide/nano-WO composite-based supercapacitor electrodes for better energy storage

Tanushree Ghosh¹, Suchita Kandpal¹, Manushree Tanwar¹, Devesh K. Pathak¹^,2, Chanchal Rani¹, T. Anusuya³, Vivek Kumar³, Rajesh Kumar¹^,4^,5^h and Anjali Chaudhary⁶^j

¹ Materials and Device Laboratory, Indian Institute of Technology Indore, 453552, Simrol, India
² Department of Chemical Engineering, University of Seoul, 02504, Seoul, Republic of Korea
³ Department of Physics, Indian Institute of Information Technology Design & Manufacturing, 600127, Kancheepuram, Chennai, India
⁴ Centre for Rural Development and Technology, Indian Institute of Technology Indore, 453552, Simrol, India
⁵ Centre for Advanced Electronics, Indian Institute of Technology Indore, 453552, Simrol, India
⁶ Department of Materials Science and Engineering, University of Wisconsin-Madison, 53706, Madison, WI, USA

^h rajeshkumar@iiti.ac.in
^j achaudhary9@wisc.edu

Received: 18 January 2022
Accepted: 16 March 2022
Published online: 2 April 2022

Abstract

A hybrid (Reduced Graphene Oxide) RGOnano-WO flexible electrode on carbon cloth substrate has been designed for application as flexible supercapacitor electrode. The electrode has been designed by electrochemically reducing the graphene oxide onto a hydrothermally deposited nano-WO on flexible carbon cloth electrode for this purpose. The electrode exhibits an enhanced supercapacitor behaviour in comparison with nano-WO alone electrode. The hybrid RGOnano-WO electrode shows areal capacitance of approximately 200 mF/cm, which is more than three times the value obtained from nano-WO (63 mF/cm ) only. It also displays superior stability of 500 cycles while the stability of nano-WO is limited up to 250 cyclic voltammogram cycles. Performance of the RGOnano-WO flexible electrode is enhanced due to the fact that it has an increased surface area (nearly twice as compare to nano-WO only) because of incorporation of RGO to form a hybrid electrode.