Issue 10, 2023

A heterogeneous NiCo2O4@2D-carbyne nanohybrid – a new electrode material for robust and high energy density hybrid supercapacitors

Abstract

NiCo2O4 nanoparticles anchored onto 2D-carbyne nanosheets is prepared to use as a new nanohybrid electrode to enhance the capacitive performance of hybrid supercapacitors. The developed heterogeneous nanohybrid takes advantage of 2D-carbyne with high electrical conductivity and NiCo2O4 with a short ion diffusion pathway and hence the synergy between 2D-carbyne and NiCo2O4 enhances the capacitive performance with a specific capacitance of around 1766.7 F g−1. Furthermore, the hybrid supercapacitor device with a maximum voltage of about 1.7 V is fabricated using NiCo2O4@2D-carbyne and activated carbon as the positive electrode and negative electrode. The hybrid supercapacitor device exhibits a high energy density of 62 W h kg−1 at a power density of 5.31 kW kg−1 over 3000 cycles with a capacity retention of about 81%. This outcome provides a new approach to develop hybrid supercapacitors with superior characteristics.

Graphical abstract: A heterogeneous NiCo2O4@2D-carbyne nanohybrid – a new electrode material for robust and high energy density hybrid supercapacitors

Article information

Article type
Paper
Submitted
20 फरवरी 2023
Accepted
12 अप्रैल 2023
First published
02 मई 2023

Sustainable Energy Fuels, 2023,7, 2368-2377

A heterogeneous NiCo2O4@2D-carbyne nanohybrid – a new electrode material for robust and high energy density hybrid supercapacitors

P. Dhandapani, A. Udayakumar, S. P. Rajendra, M. S. AlSalhi, J. Z. Guo and S. Angaiah, Sustainable Energy Fuels, 2023, 7, 2368 DOI: 10.1039/D3SE00218G

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