Defect-Mediated Adsorption of Metal Ions for Constructing Ni Hydroxide/MoS2 Heterostructures as High-Performance Water-Splitting Electrocatalysts

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

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Author(s)

  • Zuyun He
  • Qiuyu Liu
  • Yunmin Zhu
  • Tuo Tan
  • Liuxuan Cao
  • Yan Chen

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)7039-7047
Journal / PublicationACS Applied Energy Materials
Volume3
Issue number7
Online published15 Jun 2020
Publication statusPublished - 27 Jul 2020

Abstract

Electrochemical water splitting has attracted great attention as a promising technique for efficiently producing hydrogen with high purity. Developing noble metal-free electrocatalysts with good activity for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is critical for achieving economical water-splitting devices. In this work, we report a facile strategy to construct a Ni(OH)2/MoS2 heterostructure via defect-mediated metal ion adsorption. Abundant defects were introduced into MoS2 nanosheets using ion irradiation. By simply immersing the defective MoS2 nanosheets into a nickel acetate solution, Ni ions were adsorbed on the defect sites of MoS2 nanosheets and then transformed into a Ni hydroxide active phase. The obtained Ni(OH)2/irradiated MoS2 heterostructure exhibited both good HER and OER activities owing to the facilitated adsorption of reactants and reaction intermediates, as well as the strong electronic interactions near the heterointerfaces. The methodology used in this work can be generally applied to the synthesis of heterostructured electrocatalysts for other energy and environmental applications.

Research Area(s)

  • defect engineering, metal ion adsorption, ion beam irradiation, water splitting, heterostructure, MoS2, HYDROGEN EVOLUTION REACTION, SULFUR VACANCIES, MOS2 NANOSHEETS, GENERATION, SITES, (NI

Citation Format(s)

Defect-Mediated Adsorption of Metal Ions for Constructing Ni Hydroxide/MoS2 Heterostructures as High-Performance Water-Splitting Electrocatalysts. / He, Zuyun; Liu, Qiuyu; Zhu, Yunmin; Tan, Tuo; Cao, Liuxuan; Zhao, Shijun; Chen, Yan.

In: ACS Applied Energy Materials, Vol. 3, No. 7, 27.07.2020, p. 7039-7047.

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