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Electrodeposited Nanostructured CoFe2O4 for Overall Water Splitting and Supercapacitor Applications

Zhang, Chunyang, Bhoyate, Sanket, Zhao, Chen, Kahol, Pawan, Kostoglou, Nikolaos, Mitterer, Christian, Hinder, Steven, Baker, Mark, Constantinides, Georgios, Polychronopoulou, Kyriaki , Rebholz, Claus and Gupta, Ram (2019) Electrodeposited Nanostructured CoFe2O4 for Overall Water Splitting and Supercapacitor Applications Catalysts, 9 (2).

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Abstract

To contribute to solving global energy problems, a multifunctional CoFe2O4 spinel was synthesized and used as a catalyst for overall water splitting and as an electrode material for supercapacitors. The ultra-fast one-step electrodeposition of CoFe2O4 over conducting substrates provides an economic pathway to high-performance energy devices. Electrodeposited CoFe2O4 on Ni-foam showed a low overpotential of 270 mV and a Tafel slope of 31 mV/dec. The results indicated a higher conductivity for electrodeposited compared with dip-coated CoFe2O4 with enhanced device performance. Moreover, bending and chronoamperometry studies suggest excellent durability of the catalytic electrode for long-term use. The energy storage behavior of CoFe2O4 showed high specific capacitance of 768 F/g at a current density of 0.5 A/g and maintained about 80% retention after 10,000 cycles. These results demonstrate the competitiveness and multifunctional applicability of the CoFe2O4 spinel to be used for energy generation and storage devices.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Zhang, Chunyang
Bhoyate, Sanket
Zhao, Chen
Kahol, Pawan
Kostoglou, Nikolaos
Mitterer, Christian
Hinder, StevenS.Hinder@surrey.ac.uk
Baker, MarkM.Baker@surrey.ac.uk
Constantinides, Georgios
Polychronopoulou, Kyriaki
Rebholz, Claus
Gupta, Ram
Date : 13 February 2019
DOI : 10.3390/catal9020176
Copyright Disclaimer : © 2019 by the authors
Uncontrolled Keywords : CoFe2O4; OER; HER; supercapacitor; overall water splitting
Depositing User : Charlene King
Date Deposited : 13 Mar 2019 10:34
Last Modified : 13 Mar 2019 10:34
URI: http://epubs.surrey.ac.uk/id/eprint/850723

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