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Title: Nanostructured Fe-Ni Sulfide: A Multifunctional Material for Energy Generation and Storage
Authors: Zhao, Chen 
Zhang, Chunyang 
Bhoyate, Sanket 
Kahol, Pawan K. 
Kostoglou, Nikolaos 
Mitterer, Christian 
Hinder, Steve 
Baker, Mark A. 
Constantinides, Georgios 
Polychronopoulou, Kyriaki 
Rebholz, Claus 
Gupta, Ram K. 
Major Field of Science: Engineering and Technology
Field Category: Materials Engineering
Keywords: FeNiS;electrocatalyst;cyclic voltammetry;supercapacitor;cyclic stability;flexibility
Issue Date: 11-Jul-2019
Source: Catalysts, 2019, vol. 9, no. 7
Volume: 9
Issue: 7
Journal: Catalysts 
Abstract: Multifunctional materials for energy conversion and storage could act as a key solution for growing energy needs. In this study, we synthesized nanoflower-shaped iron-nickel sulfide (FeNiS) over a nickel foam (NF) substrate using a facile hydrothermal method. The FeNiS electrode showed a high catalytic performance with a low overpotential value of 246 mV for the oxygen evolution reaction (OER) to achieve a current density of 10 mA/cm2, while it required 208 mV at 10 mA/cm2 for the hydrogen evolution reaction (HER). The synthesized electrode exhibited a durable performance of up to 2000 cycles in stability and bending tests. The electrolyzer showed a lower cell potential requirement for a FeNiS-Pt/C system (1.54 V) compared to a standard benchmark IrO2-Pt/C system (1.56 V) to achieve a current density of 10 mA/cm2. Furthermore, the FeNiS electrode demonstrated promising charge storage capabilities with a high areal capacitance of 13.2 F/cm2. Our results suggest that FeNiS could be used for multifunctional energy applications such as energy generation (OER and HER) and storage (supercapacitor).
Description: This article belongs to the Special Issue Catalysis for Energy Production
ISSN: 2073-4344
DOI: 10.3390/catal9070597
Rights: Open Access
Type: Article
Affiliation : Cyprus University of Technology 
Pittsburg State University 
Montanuniversität Leoben 
University of Surrey 
Khalifa University of Science and Technology 
University of Cyprus 
Appears in Collections:Άρθρα/Articles

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