Rapid Outgassing of Hydrophilic TiO2 Electrodes Achieves Long-Term Stability of Anion Exchange Membrane Water Electrolyzers

Rapid Outgassing of Hydrophilic TiO2 Electrodes Achieves Long-Term Stability of Anion Exchange Membrane Water Electrolyzers

Highlights A super-hydrophilic electrode was successfully developed by depositing porous NiFe nanoparticles onto annealed TiO2 nanotubes (NiFe/ATNT), facilitating rapid outgassing of nonpolar gases. The NiFe/ATNT electrode demonstrated an overpotential of 235 mV at 10 mA cm−2 for the oxygen evolutio...

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Main Authors: Shajahan Shaik, Jeonghyeon Kim, Mrinal Kanti Kabiraz, Faraz Aziz, Joon Yong Park, Bhargavi Rani Anne, Mengfan Li, Hongwen Huang, Ki Min Nam, Daeseong Jo, Sang-Il Choi
Format: Article
Language:English
Published: SpringerOpen 2025-03-01
Series:Nano-Micro Letters
Subjects:
TiO2 nanotubes
NiFe
Super-hydrophilic electrode
Oxygen evolution reaction
Anion-exchange membrane water electrolyzer
Online Access:https://doi.org/10.1007/s40820-025-01696-2
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Summary:Highlights A super-hydrophilic electrode was successfully developed by depositing porous NiFe nanoparticles onto annealed TiO2 nanotubes (NiFe/ATNT), facilitating rapid outgassing of nonpolar gases. The NiFe/ATNT electrode demonstrated an overpotential of 235 mV at 10 mA cm−2 for the oxygen evolution reaction in 1.0 M KOH and served as the anode in the anion exchange membrane water electrolyzer (AEMWE), achieving a current density of 1.67 A cm−2 at 1.80 V. The AEMWE utilizing the NiFe/ATNT electrode exhibited remarkable stability, maintaining operation for 1500 h at 0.50 A cm−2 under challenging thermal conditions of 80 ± 3 °C.
ISSN:2311-6706
2150-5551

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