TY - JOUR

T1 - Nanostructured Fe-Ni Sulfide : A Multifunctional Material for Energy Generation and Storage

AU - Zhao, Chen

AU - Zhang, Chunyang

AU - Bhoyate, Sanket

AU - Kahol, Pawan K.

AU - Kostoglou, Nikolaos

AU - Mitterer, Christian

AU - Hinder, Steven J.

AU - Baker, Mark

AU - Constantinides, Georgios

AU - Polychronopoulou, Kyriaki

AU - Rebholz, Claus

AU - Gupta, Ram K.

N1 - Publisher Copyright: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. Tarticle distributed under the terms and conditions of the Cre.

PY - 2019/7/11

Y1 - 2019/7/11

N2 - 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).

AB - 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).

UR - http://www.scopus.com/inward/record.url?scp=85070021852&partnerID=8YFLogxK

U2 - 10.3390/catal9070597

DO - 10.3390/catal9070597

M3 - Article

VL - 9.2019

JO - Catalysts : open access journal

JF - Catalysts : open access journal

SN - 2073-4344

IS - 7

M1 - 597

ER -