Ru2P nanofibers for high-performance anion exchange membrane water electrolyzer

Jae Chan Kim, Junhyeong Kim, Jong Chel Park, Sang Hyun Ahn, Dong Wan Kim

Research output: Contribution to journalArticlepeer-review

Abstract

The development of advanced electrodes with highly active electrocatalysts and appropriate structures is essential for sustainable hydrogen production via water electrolysis. Moreover, there is significant demand for an affordable electrocatalyst that exhibits comparable activity to that of Pt. Herein, we report Ru2P nanofibers (NFs) as an efficient electrode material for a high-performance anion exchange membrane water electrolyzer (AEMWE). The electrospinning method enables the formation of a porous catalyst layer that comprises tangled NFs, which exhibit a three-dimensional structure with abundant empty space. In a half cell test, the Ru2P NFs exhibit a high catalytic activity for the hydrogen evolution reaction, which is comparable to the activity of a commercial Pt/C. In a single cell test, an AEMWE with Ru2P NFs demonstrates a higher performance than that with a commercial Pt/C, especially in the high current density region; this is attributed to the structural advantage of the porous catalyst layer, which enhances the mass transfer of the reactant, as well as the product.

Original languageEnglish
Article number130491
JournalChemical Engineering Journal
Volume420
DOIs
Publication statusPublished - 2021 Sep 15

Keywords

  • Anion exchange membrane water electrolyzer
  • Electrospinning
  • Hydrogen evolution reaction
  • Nanofiber
  • Ruthenium phosphide

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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