Molybdenum Phosphosulfide: An Active, Acid-Stable, Earth-Abundant Catalyst for the Hydrogen Evolution Reaction

Jakob Kibsgaard, Thomas F. Jaramillo

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Introducing sulfur into the surface of molybdenum phosphide (MoP) produces a molybdenum phosphosulfide (MoP vertical bar S) catalyst with superb activity and stability for the hydrogen evolution reaction (HER) in acidic environments. The MoPj S catalyst reported herein exhibits one of the highest HER activities of any non-noble-metal electrocatalyst investigated in strong acid, while remaining perfectly stable in accelerated durability testing. Whereas mixed-metal alloy catalysts are well-known, MoPj S represents a more uncommon mixed-anion catalyst where synergistic effects between sulfur and phosphorus produce a high-surface-area electrode that is more active than those based on either the pure sulfide or the pure phosphide. The extraordinarily high activity and stability of this catalyst open up avenues to replace platinum in technologies relevant to renewable energies, such as proton exchange membrane (PEM) electrolyzers and solar photoelectrochemical (PEC) water-splitting cells.
Original languageEnglish
JournalAngewandte chemie-international edition
Volume53
Issue number52
Pages (from-to)14433-14437
Number of pages5
ISSN1433-7851
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Electrocatalysis
  • Electrochemistry
  • Hydrogen Evolution Reaction
  • Molybdenum Phosphide
  • Phosphosulfide

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