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Title: Electrodeposited Nanostructured CoFe2O4 for Overall Water Splitting and Supercapacitor Applications
Authors: Zhang, Chunyang 
Bhoyate, Sanket 
Zhao, Chen 
Kahol, Pawan K. 
Kostoglou, Nikolaos 
Mitterer, Christian 
Hinder, Steven J. 
Baker, Mark A. 
Constantinides, Georgios 
Polychronopoulou, Kyriaki 
Rebholz, Claus 
Gupta, Ram K. 
Keywords: CoFeO 24;HER;OER;Overall water splitting;Supercapacitor
Category: Chemical Sciences
Field: Natural Sciences
Issue Date: Feb-2019
Source: Catalysts, 2019, vol. 9, no. 2
Journal: Catalysts 
Abstract: To contribute to solving global energy problems, a multifunctional CoFe 2 O 4 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 CoFe 2 O 4 over conducting substrates provides an economic pathway to high-performance energy devices. Electrodeposited CoFe 2 O 4 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 CoFe 2 O 4 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 CoFe 2 O 4 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 CoFe 2 O 4 spinel to be used for energy generation and storage devices.
ISSN: 2073-4344
DOI: 10.3390/catal9020176
Collaboration : Pittsburg State University
Montanuniversität Leoben
University of Surrey
Cyprus University of Technology
Khalifa University of Science and Technology
University of Cyprus
Rights: © by the authors. Licensee MDPI, Basel, Switzerland.
Type: Article
Appears in Collections:Άρθρα/Articles

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