Kinetic-Oriented Construction of MoS2 Synergistic Interface to Boost pH-Universal Hydrogen Evolution

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

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Author(s)

  • Jue Hu
  • Chengxu Zhang
  • Peng Yang
  • Jingyi Xiao
  • Tao Deng
  • Zhiyong Liu
  • Bolong Huang
  • Shihe Yang

Detail(s)

Original languageEnglish
Article number1908520
Journal / PublicationAdvanced Functional Materials
Volume30
Issue number6
Online published9 Dec 2019
Publication statusPublished - 5 Feb 2020

Abstract

As a prerequisite for a sustainable energy economy in the future, designing earth-abundant MoS2 catalysts with a comparable hydrogen evolution catalytic performance in both acidic and alkaline environments is still an urgent challenge. Decreasing the energy barriers could enhance the catalysts' activity but is not often a strategy for doing so. Here, the first kinetic-oriented design of the MoS2-based heterostructure is presented for pH-universal hydrogen evolution catalysis by optimizing the electronic structure based on the simultaneous modulation of the 3d-band-offsets of Ni, Co, and Mo near the interface. Benefiting from this desirable electronic structure, the obtained MoS2/CoNi2S4 catalyst achieves an ultralow overpotential of 78 and 81 mV at 10 mA cm−2, and turnover frequency as high as 2.7 and 1.7 s−1 at the overpotential of 200 mV in alkaline and acidic media, respectively. The MoS2/CoNi2S4 catalyst represents one of the best hydrogen evolution reaction performing ones among MoS2-based catalysts reported to date in both alkaline and acidic environments, and equally important is the remarkable long-term stability with negligible activity loss after maintaining at 10 mA cm−2 for 48 h in both acid and base. This work highlights the potential to deeply understand and rationally design highly efficient pH-universal electrocatalysts for future energy storage and delivery.

Research Area(s)

  • hydrogen evolution, interfacial electrocatalysis, kinetic-oriented mechanism, MoS2, pH-universal

Citation Format(s)

Kinetic-Oriented Construction of MoS2 Synergistic Interface to Boost pH-Universal Hydrogen Evolution. / Hu, Jue; Zhang, Chengxu; Yang, Peng; Xiao, Jingyi; Deng, Tao; Liu, Zhiyong; Huang, Bolong; Leung, Michael K. H.; Yang, Shihe.

In: Advanced Functional Materials, Vol. 30, No. 6, 1908520, 05.02.2020.

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