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Peer-reviewedCC BYLangmuir : the ACS journal of surfaces and colloids

Self-Catalyzed Hastelloy Fiber Paper (HAP) Porous Transport Layer for Oxygen Evolution Reaction in Anion Exchange Membrane Water Electrolysis.

  • Yu-Chen Chang1
  • Shuo-En Yu2
  • I-Chun Cheng3
  • Jian-Zhang Chen1,4,5,6
6 affiliations
  1. 1Graduate School of Advanced Technology, National Taiwan University, Taipei City106319, Taiwan.
  2. 2Institute for Solid State Physics, The University of Tokyo, Chiba277-8581, Japan.
  3. 3Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei City106319, Taiwan.
  4. 4Institute of Applied Mechanics, National Taiwan University, Taipei City106319, Taiwan.
  5. 5Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei City106319, Taiwan.
  6. 6Research Center for Applied Sciences, Academia Sinica, Taipei City115201, Taiwan.
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Abstract

Hastelloy fiber paper (HAP) can be used as the oxygen evolution reaction porous transport layer (PTL) without using a catalyst layer in anion exchange membrane water electrolysis. It is combined with Ru on nickel fiber paper (NFP) (hydrogen evolution reaction PTL) to form an asymmetric Ru/NFP(-)//HAP(+) single-cell system. The experimental results for electrodeposited Co(OH)2 on HAP are also demonstrated for comparison. At 70 °C, the cell delivers 725.67 mA cm-2 at 1.8 V under cathode-wet conditions and maintains 701.34 mA cm-2 under cathode-dry operation. A 5000-cycle accelerated stress test (AST) confirms the good operational stability of the system under dynamic cycling conditions. In addition, the effect of Co(OH)2 electrodeposition on the HAP anode was further investigated to show the current density decreases to 485.59 mA cm-2 at 1.8 V when operated at 70 °C. The AST stability also degrades with Co(OH)2 deposition. Further analysis indicates that the electrodeposited Co(OH)2 coating may alter the pore structure and surface wettability of the catalyst layer, leading to mass-transport limitations at high current densities, including hindered ion transport and inefficient oxygen bubble removal.

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Cite

BibTeXRIS
BibTeX
@article{chang2026selfcatalyzed,
  title = {{Self-Catalyzed Hastelloy Fiber Paper (HAP) Porous Transport Layer for Oxygen Evolution Reaction in Anion Exchange Membrane Water Electrolysis.}},
  author = {Yu-Chen Chang and Shuo-En Yu and I-Chun Cheng and Jian-Zhang Chen},
  journal = {Langmuir : the ACS journal of surfaces and colloids},
  year = {2026},
  month = oct,
  doi = {10.1021/acs.langmuir.6c04347},
  url = {https://europepmc.org/article/MED/42899882},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Self-Catalyzed Hastelloy Fiber Paper (HAP) Porous Transport Layer for Oxygen Evolution Reaction in Anion Exchange Membrane Water Electrolysis.
AU  - Yu-Chen Chang
AU  - Shuo-En Yu
AU  - I-Chun Cheng
AU  - Jian-Zhang Chen
PY  - 2026
DA  - 2026/10/01
JO  - Langmuir : the ACS journal of surfaces and colloids
DO  - 10.1021/acs.langmuir.6c04347
UR  - https://europepmc.org/article/MED/42899882
AB  - Hastelloy fiber paper (HAP) can be used as the oxygen evolution reaction porous transport layer (PTL) without using a catalyst layer in anion exchange membrane water electrolysis. It is combined with Ru on nickel fiber paper (NFP) (hydrogen evolution reaction PTL) to form an asymmetric Ru/NFP(-)//HAP(+) single-cell system. The experimental results for electrodeposited Co(OH)2 on HAP are also demonstrated for comparison. At 70 °C, the cell delivers 725.67 mA cm-2 at 1.8 V under cathode-wet conditions and maintains 701.34 mA cm-2 under cathode-dry operation. A 5000-cycle accelerated stress test (AST) confirms the good operational stability of the system under dynamic cycling conditions. In addition, the effect of Co(OH)2 electrodeposition on the HAP anode was further investigated to show the current density decreases to 485.59 mA cm-2 at 1.8 V when operated at 70 °C. The AST stability also degrades with Co(OH)2 deposition. Further analysis indicates that the electrodeposited Co(OH)2 coating may alter the pore structure and surface wettability of the catalyst layer, leading to mass-transport limitations at high current densities, including hindered ion transport and inefficient oxygen bubble removal.
SN  - 0743-7463
SN  - 1520-5827
ER  -