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

22 Citations (Scopus)


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
Publication statusPublished - 2021 Sept 15

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science, ICT, and Future Planning, South Korea [grant numbers NRF‐2016M3A7B4909318 , 2021M3D1A2051636 , and 2019M3E6A1103818 ], and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, South Korea [grant number 2020R1A6A1A03045059 ].

Publisher Copyright:
© 2021 Elsevier B.V.


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

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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