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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. 
Major Field of Science: Natural Sciences
Field Category: Chemical Sciences
Keywords: CoFeO 24;HER;OER;Overall water splitting;Supercapacitor
Issue Date: Feb-2019
Source: Catalysts, 2019, vol. 9, no. 2
Volume: 9
Issue: 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
Rights: © by the authors. Licensee MDPI, Basel, Switzerland
Type: Article
Affiliation : Pittsburg State University 
Montanuniversität Leoben 
University of Surrey 
Cyprus University of Technology 
Khalifa University of Science and Technology 
University of Cyprus 
Appears in Collections:Άρθρα/Articles

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