Sandwich-Structured Fe-Ni2P/MoSx/NF Bifunctional Electrocatalyst for Overall Water Splitting

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

View graph of relations

Author(s)

  • Xinglin Zhang
  • Xinyu Qu
  • Yanfang Ren
  • Jiajia Yin
  • Wenjun Wang
  • Wei Huang
  • Xiaochen Dong

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number1901926
Journal / PublicationAdvanced Materials Interfaces
Volume7
Issue number12
Online published28 Apr 2020
Publication statusPublished - 23 Jun 2020

Abstract

Exploring cost-efficient, high-active bifunctional electrochemical catalysts with long-term stability are significant for green economy. Herein, a noble-metal-free sandwich-structured catalyst, prepared with facile hydrothermal method and phosphorization process, in which the amorphous MoSx serves as an intermediate layer between the Fe-doped Ni2P and Ni foam substrate (Fe-Ni2P/MoSx/NF) is reported. The obtained free-standing catalyst performs an enhanced electrochemical activity compared with Fe-Ni2P/NF and MoSx/NF. The Fe-Ni2P/MoSx/NF catalyst only requires overpotentials of 246 mV to achieve 10 mA cm−2 and 277 mV to reach 50 mA cm−2 for oxygen evolution reaction process with a low Tafel slope of 59.7 mV dec−1 in alkaline solution. Meanwhile, an overpotential of 112 mV is demanded to reach 10 mA cm−2 for hydrogen evolution reaction. When the Fe-Ni2P/MoSx/NF is used as two electrodes for overall water splitting, it requires 1.61 V to attain 10 mA cm−2 with prominent durability. This approach provides a versatile strategy to construct excellent bifunctional catalysts for effective water electrolysis.

Research Area(s)

  • electrocatalysis, iron-doped nickel phosphides, molybdenum sulfides, overall water splitting, sandwich structures

Citation Format(s)

Sandwich-Structured Fe-Ni2P/MoSx/NF Bifunctional Electrocatalyst for Overall Water Splitting. / Zhang, Xinglin; Liang, Chen; Qu, Xinyu; Ren, Yanfang; Yin, Jiajia; Wang, Wenjun; Yang, Mengsu; Huang, Wei; Dong, Xiaochen.

In: Advanced Materials Interfaces, Vol. 7, No. 12, 1901926, 23.06.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal