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Cost‐Effective Synthesis of Electrodeposited NiCo 2
Authors
. et al
Sreekanth Mandati
+4 more
Surendra Kumar Martha
Katchala Nanaji
Samhita Pappu
Tata N. Rao
Publication date
1 January 2020
Publisher
'Wiley'
Doi
Cite
Abstract
Nanostructured transition metal oxide synthesis possessing high energy density and stability is desirable for supercapacitors. Herein, we synthesize three-dimensional NiCo2O4 (NCO) nanosheets with oxygen vacancies induced by sustainable and environmentally benign electrodeposition assisted chemical reduction process. Oxygen vacancies increase the conductivity, adsorptivity, and the active surface area, thereby enhancing the charge storage capabilities. The binder-free NCO delivers the highest specific capacitance (Csp) of 2065 F g−1 at 1 A g−1, retaining 89.30 % of its initial value at 10 A g−1 after 10,000 continuous charge-discharge (CD) cycles. An asymmetric supercapacitor (ASC) fabricated shows remarkable electrochemical properties with high energy density (Emax) of 28.6 Wh kg−1 and power density (Pmax) of 7.5 kW kg−1. The assembled ASC reports exceptional cyclic retention of 90.6 % for 10,000 CD cycles with practical demonstration. The approach used herein is suitable for eco-friendly supercapacitor electrode fabrication with large scale manufacturing capability and less capital investment. © 2020 Wiley-VCH Gmb
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Last time updated on 05/09/2020
Research Archive of Indian Institute of Technology Hyderabad
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oai:raiith.iith.ac.in:11084
Last time updated on 30/10/2022