Issue 6, 2021

Marigold micro-flower like NiCo2O4 grown on flexible stainless-steel mesh as an electrode for supercapacitors

Abstract

Nanostructured NiCo2O4 is a promising material for energy storage systems. Herein, we report the binder-free deposition of porous marigold micro-flower like NiCo2O4 (PNCO) on the flexible stainless-steel mesh (FSSM) as (PNCO@FSSM) electrode by simple chemical bath deposition. The SEM and EDS analysis revealed the marigold micro-flowers like morphology of NiCo2O4 and its elemental composition. The porous nature of the electrode is supported by the BET surface area (100.47 m2 g−1) and BJH pore size diameter (∼1.8 nm) analysis. This PNCO@FSSM electrode demonstrated a specific capacitance of 530 F g−1 at a high current density of 6 mA cm−2 and revealed 90.5% retention of specific capacitance after 3000 cycles. The asymmetric supercapacitor device NiCo2O4//rGO within a voltage window of 1.4 V delivered a maximum energy density of 41.66 W h kg−1 at a power density of 3000 W kg−1. The cyclic stability study of this device revealed 73.33% capacitance retention after 2000 cycles. These results indicate that the porous NiCo2O4 micro-flowers electrode is a promising functional material for the energy storage device.

Graphical abstract: Marigold micro-flower like NiCo2O4 grown on flexible stainless-steel mesh as an electrode for supercapacitors

Article information

Article type
Paper
Submitted
09 Nov 2020
Accepted
03 Jan 2021
First published
18 Jan 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 3666-3672

Marigold micro-flower like NiCo2O4 grown on flexible stainless-steel mesh as an electrode for supercapacitors

G. P. Kamble, A. A. Kashale, A. S. Rasal, S. A. Mane, R. A. Chavan, J. Chang, Y. Ling, S. S. Kolekar and A. V. Ghule, RSC Adv., 2021, 11, 3666 DOI: 10.1039/D0RA09524A

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