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

被引：0
|
作者：
Shaik, Shajahan [1 ,2 ]
Kim, Jeonghyeon [1 ,2 ]
Kabiraz, Mrinal Kanti [1 ,2 ]
Aziz, Faraz [3 ]
Park, Joon Yong [4 ,5 ]
Anne, Bhargavi Rani [6 ]
Li, Mengfan [7 ]
Huang, Hongwen [7 ]
Nam, Ki Min [4 ,5 ]
Jo, Daeseong [3 ]
Choi, Sang-Il [1 ,2 ]
机构：
[1] Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea
[2] Kyungpook Natl Univ, Green Nano Mat Res Ctr, Daegu 41566, South Korea
[3] Kyungpook Natl Univ, Dept Mech Engn, Daegu 41566, South Korea
[4] Pusan Natl Univ, Dept Chem, Busan 46241, South Korea
[5] Pusan Natl Univ, Chem Inst Funct Mat, Busan 46241, South Korea
[6] Natl Inst Technol, Dept Met & Mat Engn, Raipur 492010, India
[7] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
来源：
NANO-MICRO LETTERS | 2025年 / 17卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
TiO2; nanotubes; NiFe; Super-hydrophilic electrode; Oxygen evolution reaction; Anion-exchange membrane water electrolyzer; HIGHLY EFFICIENT; NANOPARTICLES; SPECTROSCOPY; PERFORMANCE; CATALYSTS;
D O I：
10.1007/s40820-025-01696-2
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The state-of-the-art anion-exchange membrane water electrolyzers (AEMWEs) require highly stable electrodes for prolonged operation. The stability of the electrode is closely linked to the effective evacuation of H-2 or O-2 gas generated from electrode surface during the electrolysis. In this study, we prepared a super-hydrophilic electrode by depositing porous nickel-iron nanoparticles on annealed TiO2 nanotubes (NiFe/ATNT) for rapid outgassing of such nonpolar gases. The super-hydrophilic NiFe/ATNT electrode exhibited an overpotential of 235 mV at 10 mA cm(-2) for oxygen evolution reaction in 1.0 M KOH solution, and was utilized as the anode in the AEMWE to achieve a current density of 1.67 A cm(-2) at 1.80 V. In addition, the AEMWE with NiFe/ATNT electrode, which enables effective outgassing, showed record stability for 1500 h at 0.50 A cm(-2) under harsh temperature conditions of 80 +/- 3 degrees C.
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页数：18
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