Crystalline/Amorphous Heterophase with Self-Assembled Hollow Structure for Highly Efficient Electrochemical Hydrogen Production

Zhengqing Liu, Kunkun Nie, Yanling Yuan, Binjie Li, Pei Liu, Shaokun Chong, Yaping Du, Wei Huang

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Heterophase nanomaterials composed of multiple phases have attracted increasing attention due to their enhanced performance in electrocatalytic field. Nevertheless, constructing two-dimensional (2D) crystalline/amorphous heterophase nanostructures with the same chemical composition remains a great challenge. Herein, we report the preparation of a 2D crystalline/amorphous heterophase of MoS2 nanosheets with the same elemental components via a facile solvothermal method. The obtained MoS2 heterophase nanosheets can self-assemble into hollow structures with high morphological yield, referred to as c/a-hollow MoS2. Furthermore, the as-prepared c/a-hollow MoS2 can serve as templates to grow uniform Pt nanoparticles with a low mass loading of 5%, forming c/a-hollow MoS2-Pt nanocomposites. Impressively, when used as electrocatalysts, c/a-hollow MoS2 and c/a-hollow MoS2-Pt nanocomposites exhibit excellent electrochemical performance toward hydrogen production with low onset potentials of −112 and −26 mV and Tafel slopes as small as 45 and 34 mV/dec, respectively, which are among the best reported hydrogen evolution reaction electrocatalysts.

Original languageEnglish
Pages (from-to)3391-3401
Number of pages11
JournalCCS Chemistry
Volume4
Issue number10
DOIs
StatePublished - 3 Oct 2022

Keywords

  • amorphous
  • heterophase
  • hollow structure
  • hydrogen evolution reaction

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