Wide pH range electrocatalytic hydrogen evolution using molybdenum phosphide nanoparticles uniformly anchored on porous carbon cloth

Dong Yeop Lee, Hee Jo Song, Dong Wan Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The development of efficient and inexpensive electrocatalysts is regarded as an urgent concern in electrochemical water-splitting system. Herein, we propose a novel strategy for the fabrication of molybdenum phosphide nanoparticles (MoP NPs) anchored on porous carbon cloth (MoP@PCC) as a noble metal–free electrocatalyst for hydrogen evolution reaction (HER). Benefiting from the thin and uniform coating of ultrafine molybdenum dioxide (MoO2) NPs on PCC, less-aggregated MoP NPs can be formed on PCC after thermal phosphidation, resulting in an efficient performance for HER over a wide pH range. Particularly, MoP@PCC exhibited good electrocatalytic activities in alkaline and neutral solutions with low overpotentials of 122 and 160 mV at a current density of −10 mA cm−2, respectively. Additionally, MoP@PCC exhibited long-term stability and durability with continuous 10,000 cyclic voltammetry (CV) cycles and chronopotentiometric operation over 50 h, both in alkaline and neutral solutions.

Original languageEnglish
Pages (from-to)9347-9353
Number of pages7
JournalCeramics International
Volume47
Issue number7
DOIs
Publication statusPublished - 2021 Apr 1

Keywords

  • Electrocatalyst
  • Freestanding
  • Hydrogen evolution reaction
  • Molybdenum phosphide
  • Wide pH

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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