Self-catalyzed NiFe foam anode fabricated via tape-casting for oxygen evolution reaction in anion exchange membrane water electrolysis
Journal
Fuel
Journal Volume
411
Start Page
138060
ISSN
00162361
Date Issued
2026-05-01
Author(s)
Chiu, Li-Da
Putra, Calvin Leo
Yu, Shuo-En
Ni, I-Chih
Abstract
Self-catalyzed NiFe foam (NFF) anodes fabricated via tape-casting were developed to facilitate the oxygen evolution reaction in anion exchange membrane water electrolysis (AEMWE); this represents a change from the conventional multilayer MEA design. This monolithic architecture integrates the catalyst layer with the porous transport layer (PTL) into a single conductive scaffold, thus eliminating the discrete PTL–CL interface and enabling binder-free operation. In three-electrode tests, the NFF exhibited an overpotential of 249 mV at 10 mA cm−2, Tafel slope of 33.4 mV dec−1, outperformed conventional Ni foam and stainless-steel fiber paper. When integrated into AEMWE modules, the anode delivered 927.9 mA cm−2 at 2.0 V and 25 °C, whereas at 70 °C under cathode-dry operation, NFF reached 1.857 A cm−2. A stability test showed negligible degradation after 60 h of intermittent day–night cycling at 600 mA cm−2 and after 5000 accelerated stress test (AST) square-wave cycles between 500 and 100 mA cm−2, demonstrating robust operation under renewable-energy-relevant fluctuations. These results establish tape-casted NFF as a scalable, high-performance anode platform that redefines AEMWE architecture for durable and efficient hydrogen production.
Subjects
Anion exchange membrane water electrolysis
NiFe foam
Oxygen evolution reaction
Tape casting
Publisher
Elsevier Ltd
Type
journal article