TY - JOUR
T1 - Polymer-wrapped reduced graphene oxide/nickel cobalt ferrite nanocomposites as tertiary hybrid supercapacitors
T2 - insights from experiment and simulation
AU - Hareesh, K.
AU - Rondiya, Sachin R.
AU - Dzade, Nelson Y.
AU - Dhole, S. D.
AU - Williams, Jim
AU - Sergey, Samarin
N1 - Funding Information:
This research was conducted as a part of the ‘National Operational Research Training Course 2018-19’ organised by Project Axshya, funded by The Global Fund and implemented by The International Union Against Tuberculosis and Lung Diseases (The Union), South-East Asia Regional Office, New Delhi, India. The training course was conducted in collaboration with Revised National Tuberculosis Control Program, Ministry of Health and Family Welfare, Government of India and National Institute for TB and Respiratory Diseases, New Delhi, India.
Funding Information:
The training course under which this research was conducted and open access publication charges was funded by, The Global Fund to Fight AIDS, Tuberculosis and Malaria (GFATM). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Publisher Copyright:
© 2021 The Authors
PY - 2021/6
Y1 - 2021/6
N2 - The tertiary hybrid supercapacitor consisting of PEDOT:PSS wrapped reduced graphene oxide/Ni0.5Co0.5Fe2O4 (PGNC) was developed and its supercapacitance performance has been compared with that of the reduced graphene oxide (rGO)/Ni0.5Co0.5Fe2O4 (GNC), carbon nanotube (CNT)/Ni0.5Co0.5Fe2O4 (CNC) and carbon nanotube/reduced graphene oxide/Ni0.5Co0.5Fe2O4 (CGNC). Among all, PGNC exhibits an excellent specific capacitance of 1286 Fg−1 with a capacitance retention of 95% over 6000 cycles at a current density of 0.5 Ag−1. The synergetic effects between rGO, Ni0.5Co0.5Fe2O4 and the PEDOT:PSS polymer result in an increase in the specific surface area and the pore volume, making PGNC an excellent hybrid supercapacitor for energy storage. The enhancement in the specific capacitance of the PGNC nanocomposite is further validated through first-principles density functional theory calculations, which predict an increment in the density of states at the Fermi level of the GNC and CNC nanocomposites compared to the isolated Ni0.5Co0.5Fe2O4 material. The supercapacitance performance of the PGNC nanocomposite is reported for different electrolytes, different stoichiometric ratios of Ni and Co in NixCo1-xFe2O4 and on different substrates.
AB - The tertiary hybrid supercapacitor consisting of PEDOT:PSS wrapped reduced graphene oxide/Ni0.5Co0.5Fe2O4 (PGNC) was developed and its supercapacitance performance has been compared with that of the reduced graphene oxide (rGO)/Ni0.5Co0.5Fe2O4 (GNC), carbon nanotube (CNT)/Ni0.5Co0.5Fe2O4 (CNC) and carbon nanotube/reduced graphene oxide/Ni0.5Co0.5Fe2O4 (CGNC). Among all, PGNC exhibits an excellent specific capacitance of 1286 Fg−1 with a capacitance retention of 95% over 6000 cycles at a current density of 0.5 Ag−1. The synergetic effects between rGO, Ni0.5Co0.5Fe2O4 and the PEDOT:PSS polymer result in an increase in the specific surface area and the pore volume, making PGNC an excellent hybrid supercapacitor for energy storage. The enhancement in the specific capacitance of the PGNC nanocomposite is further validated through first-principles density functional theory calculations, which predict an increment in the density of states at the Fermi level of the GNC and CNC nanocomposites compared to the isolated Ni0.5Co0.5Fe2O4 material. The supercapacitance performance of the PGNC nanocomposite is reported for different electrolytes, different stoichiometric ratios of Ni and Co in NixCo1-xFe2O4 and on different substrates.
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U2 - 10.1016/j.jsamd.2021.03.001
DO - 10.1016/j.jsamd.2021.03.001
M3 - Article
AN - SCOPUS:85104419053
SN - 2468-2284
VL - 6
SP - 291
EP - 301
JO - Journal of Science: Advanced Materials and Devices
JF - Journal of Science: Advanced Materials and Devices
IS - 2
ER -