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| Home > Publications database > Optimized NiFe-LDH catalyst layers boost anion exchange membrane water electrolyzer performance and durability |
| Home > Publications database > Optimized NiFe-LDH catalyst layers boost anion exchange membrane water electrolyzer performance and durability |
| Journal Article | FZJ-2026-03219 |
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2026
Elsevier
New York, NY [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.ijhydene.2026.155383 doi:10.34734/FZJ-2026-03219
Abstract: The optimization of anion exchange membrane water electrolyzers (AEMWEs) relies on active, stable catalysts and well-designed catalyst layers. This study investigates the impact of tumbler ball milling on a nickel–iron layered double hydroxide (Ni3Fe-LDH) catalyst for the oxygen evolution reaction (OER). Milling reduced catalyst clusters from 1-100 μm to 30 nm, increasing the geometrical surface area by 8.8-fold. Optimized solvent compositions and dispersing times enhanced catalyst dispersion stability. Tailoring the electrode structure reduced internal electronic resistances and charge-transfer resistances of the membrane electrode assembly. The optimized electrode exhibited outstanding single-cell performance, reaching 1.83 V at 2 A cm−2 with stable durability of 1000 h and a minor degradation rate of 62 μV h−1. This work presents a scalable approach to NiFe-LDH catalyst treatment and dispersion control, demonstrating the importance of research and optimization across scales to improve performance and support the practical advancement of hydrogen technologies.
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