Two-dimensional metallic MoS2-amorphous CoNi(OH)2 nanocomposite for enhanced electrochemical water splitting in alkaline solutions

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

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Author(s)

  • Ying Zhang
  • Lixun Xue
  • Chenbin Liang
  • Yizhuang Chen
  • Junjie Liu
  • Chuang Shen
  • Qi Li
  • Yefan Duan
  • Liyuan Yao
  • Hao Zhang
  • Yongqing Cai
  • Zhimin Luo

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number150079
Journal / PublicationApplied Surface Science
Volume561
Online published14 May 2021
Publication statusPublished - 30 Sep 2021

Abstract

We report the preparation of nanocomposite consisting of metallic MoS2 and electrodeposited amorphous CoNi(OH)2 nanosheets on carbon paper for efficient electrochemical water splitting in the alkaline solutions. The synergistic effect between metallic MoS2 and amorphous CoNi(OH)2 nanosheets enables the excellent catalytic activity of nanocompsite towards hydrogen evolution reaction (HER) in 0.1 M KOH with a low overpotential of 178 mV at a current density of 10 mA/cm2 and Tafel slope of 60.9 mV/decade. The current density of MoS2-CoNi(OH)2 nanocomposite for HER at the overpotential of more than 0.190 V is even higher than that of the commercial Pt/C catalyst. Moreover, the MoS2-CoNi(OH)2 nanocomposite is also active towards electrochemical oxygen evolution and can act as a bifunctional catalyst for water splitting in 0.1 M KOH. Our work povides a simple and effective way to engineer phases and prepare two-dimensional nanocomposites for effecient water splitting in alkaline aqueous solutions.

Research Area(s)

  • Alkaline water splitting, Amorphous CoNi(OH)2, Hydrogen evolution, Metallic MoS2, Synergistic effect

Citation Format(s)

Two-dimensional metallic MoS2-amorphous CoNi(OH)2 nanocomposite for enhanced electrochemical water splitting in alkaline solutions. / Zhang, Ying; Xue, Lixun; Liang, Chenbin; Chen, Yizhuang; Liu, Junjie; Shen, Chuang; Li, Qi; Duan, Yefan; Yao, Liyuan; Zhang, Hao; Cai, Yongqing; Tan, Chaoliang; Luo, Zhimin.

In: Applied Surface Science, Vol. 561, 150079, 30.09.2021.

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