AIP Advances
(Dec 2023)
Studies of reduced graphene oxide (rGO)/CuS nanocomposite for supercapacitor applications
Rahul Singhal,
David Thorne,
Manika Chaudhary,
Ashwani Kumar,
Shiva Bhardwaj,
Rilind Abazi,
Alexander Colon,
Ram K. Gupta,
Jules Scanley,
Christine C. Broadbridge,
Beer Pal Singh,
Peter K. LeMaire,
Rakesh K. Sharma
Affiliations
Rahul Singhal
Department of Physics and Engineering Physics, Central Connecticut State University, New Britain, Connecticut 06050, USA
David Thorne
Department of Physics and Engineering Physics, Central Connecticut State University, New Britain, Connecticut 06050, USA
Manika Chaudhary
Department of Physics, Chaudhary Charan Singh University, Meerut 250004, India
Ashwani Kumar
Nanoscience Laboratory, Institute Instrumentation Centre, IIT Roorkee, Roorkee 247667, India
Shiva Bhardwaj
Department of Chemistry, Pittsburg State University, Pittsburg, Kansas 66762, USA
Rilind Abazi
Department of Physics and Engineering Physics, Central Connecticut State University, New Britain, Connecticut 06050, USA
Alexander Colon
Department of Physics and Engineering Physics, Central Connecticut State University, New Britain, Connecticut 06050, USA
Ram K. Gupta
Department of Chemistry, Pittsburg State University, Pittsburg, Kansas 66762, USA
Jules Scanley
Connecticut State Colleges and Universities (CSCU) Center for Nanotechnology, Southern Connecticut State University, New Haven, Connecticut 06515, USA
Christine C. Broadbridge
Connecticut State Colleges and Universities (CSCU) Center for Nanotechnology, Southern Connecticut State University, New Haven, Connecticut 06515, USA
Beer Pal Singh
Department of Physics, Chaudhary Charan Singh University, Meerut 250004, India
Peter K. LeMaire
Department of Physics and Engineering Physics, Central Connecticut State University, New Britain, Connecticut 06050, USA
Rakesh K. Sharma
Department of Chemistry, Indian Institute of Technology Jodhpur, NH-62, Karwar, Jodhpur 342037, Rajasthan, India
DOI
https://doi.org/10.1063/5.0166199
Journal volume & issue
Vol. 13,
no. 12
Abstract
Read online
We have prepared CuS and CuS-rGO nanocomposites via the hydrothermal method. The physical properties of the synthesized materials were studied through x-ray diffraction and scanning electron microscopy. The supercapacitor characteristics were evaluated by cyclic voltammetric and galvanostatic charge–discharge studies. The cyclic voltammetric studies conform the pseudocapacitive nature of CuS and CuS-rGO electrodes. The specific capacitance of CuS was obtained as 207, 150, and 97 F/g at a current density of 0.5, 5, and 20 A/g, respectively. The rGO-CuS nanocomposite showed improved specific capacitance of 350, 251, and 149 F/g at current densities of 0.5, 5, and 20 A/g, respectively.
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