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

IF 36.3 1区材料科学 Q1 Engineering Nano-Micro Letters Pub Date : 2025-03-13 DOI:10.1007/s40820-025-01696-2

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

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Abstract

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.

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亲水TiO2电极快速放气实现阴离子交换膜电解器的长期稳定性

通过将多孔NiFe纳米颗粒沉积在退火的TiO2纳米管（NiFe/ATNT）上，成功地开发了一种超亲水电极，促进了非极性气体的快速脱气。在1.0 M KOH条件下，NiFe/ATNT电极在10 mA cm−2下的过电位为235 mV，作为负离子交换膜水电解槽（AEMWE）的阳极，在1.80 V下电流密度为1.67 a cm−2。使用NiFe/ATNT电极的AEMWE表现出了显著的稳定性，在80±3°C的极热条件下，在0.50 A cm - 2下保持1500小时的运行。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.