Fabrication of amorphous/polycrystalline CoP@CoB hollow nanochains for efficient hydrogen evolution reaction

Jun Lu, Hui Wang, Xuyun Wang, Rongfang Wang, Jianwei Ren

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Practices in large-scale hydrolysis hydrogen production requires low-cost non-precious metal catalysts with high-efficiency. In this work, amorphous/polycrystalline CoP@CoB hollow nanochains are in-situ fabricated by applying gas-phase phosphating on CoB nano-chains. As expected, the formation of amorphous/polycrystalline with partially hollow structures and P-doping increased the number of exposed active sites, and altered the electronic structure of Co. As a result, the electron transfer and Hydrogen Evolution Reaction (HER) performance are enhanced. Based on the Kirkendall effect, the fabricated CoP@CoB catalyst generates a current density of 10 mA cm−2 at overpotential of 135 mV, which is much lower than the reported value of 250 mV for amorphous CoB nanoparticles.

Original languageEnglish
Article number165883
JournalJournal of Alloys and Compounds
Volume920
DOIs
Publication statusPublished - 5 Nov 2022

Keywords

  • CoP@CoB
  • Core-shell
  • Electrocatalysts
  • Hydrogen evolution reaction
  • Kirkendall effect

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Fabrication of amorphous/polycrystalline CoP@CoB hollow nanochains for efficient hydrogen evolution reaction'. Together they form a unique fingerprint.

Cite this