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Open AccessArticle

Nanostructured Fe-Ni Sulfide: A Multifunctional Material for Energy Generation and Storage

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Department of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USA
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Department of Physics, Pittsburg State University, Pittsburg, KS 66762, USA
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Department of Materials Science, Montanuniversität Leoben, 8700 Leoben, Austria
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Department of Mechanical Engineering Sciences, University of Surrey, Guildford GU27XH, UK
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Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, 3036 Lemesos, Cyprus
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Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, UAE
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Center for Catalysis and Separations, Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, UAE
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Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, Cyprus
*
Authors to whom correspondence should be addressed.
Catalysts 2019, 9(7), 597; https://doi.org/10.3390/catal9070597
Received: 17 May 2019 / Revised: 4 July 2019 / Accepted: 6 July 2019 / Published: 11 July 2019
(This article belongs to the Special Issue Catalysis for Energy Production)
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). View Full-Text
Keywords: FeNiS; electrocatalyst; cyclic voltammetry; supercapacitor; cyclic stability; flexibility FeNiS; electrocatalyst; cyclic voltammetry; supercapacitor; cyclic stability; flexibility
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MDPI and ACS Style

Zhao, C.; Zhang, C.; Bhoyate, S.; Kahol, P.K.; Kostoglou, N.; Mitterer, C.; Hinder, S.; Baker, M.; Constantinides, G.; Polychronopoulou, K.; Rebholz, C.; Gupta, R.K. Nanostructured Fe-Ni Sulfide: A Multifunctional Material for Energy Generation and Storage. Catalysts 2019, 9, 597. https://doi.org/10.3390/catal9070597

AMA Style

Zhao C, Zhang C, Bhoyate S, Kahol PK, Kostoglou N, Mitterer C, Hinder S, Baker M, Constantinides G, Polychronopoulou K, Rebholz C, Gupta RK. Nanostructured Fe-Ni Sulfide: A Multifunctional Material for Energy Generation and Storage. Catalysts. 2019; 9(7):597. https://doi.org/10.3390/catal9070597

Chicago/Turabian Style

Zhao, Chen; Zhang, Chunyang; Bhoyate, Sanket; Kahol, Pawan K.; Kostoglou, Nikolaos; Mitterer, Christian; Hinder, Steve; Baker, Mark; Constantinides, Georgios; Polychronopoulou, Kyriaki; Rebholz, Claus; Gupta, Ram K. 2019. "Nanostructured Fe-Ni Sulfide: A Multifunctional Material for Energy Generation and Storage" Catalysts 9, no. 7: 597. https://doi.org/10.3390/catal9070597

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