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

Chen Zhao, Chunyang Zhang, Sanket Bhoyate, Pawan K. Kahol, Nikolaos Kostoglou, Christian Mitterer, Steven J. Hinder, Mark Baker, Georgios Constantinides, Kyriaki Polychronopoulou, Claus Rebholz, Ram K. Gupta

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

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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/cm 2, while it required 208 mV at 10 mA/cm 2 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 IrO 2-Pt/C system (1.56 V) to achieve a current density of 10 mA/cm 2 . Furthermore, the FeNiS electrode demonstrated promising charge storage capabilities with a high areal capacitance of 13.2 F/cm 2 . Our results suggest that FeNiS could be used for multifunctional energy applications such as energy generation (OER and HER) and storage (supercapacitor).

FachzeitschriftCatalysts : open access journal
PublikationsstatusVeröffentlicht - 11 Juli 2019

Bibliographische Notiz

Funding Information:
Funding: This research received no external funding. The APC was funded by the Abu Dhabi Education and Knowledge (ADEK) Department, Award for Research Excellence, AARE 2017.

Funding Information:
Acknowledgments: R.K.G. expresses his sincere acknowledgment to the Polymer Chemistry Program and Kansas Polymer Research Center, Pittsburg State University, for providing financial and research support to complete this project.

Publisher Copyright:
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. Tarticle distributed under the terms and conditions of the Cre.

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