Rapid Outgassing of Hydrophilic TiO_(2) Electrodes Achieves Long-Term Stability of Anion Exchange Membrane Water Electrolyzers  

作　　者：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 

机构地区：[1]Department of Chemistry and Green-Nano Materials Research Center,Kyungpook National University,Daegu 41566,South Korea [2]Department of Mechanical Engineering,Kyungpook National University,Daegu 41566,South Korea [3]Department of Chemistry and Chemistry Institute for Functional Materials,Pusan National University,Busan 46241,South Korea [4]Department of Metallurgical and Materials Engineering,National Institute of Technology,Raipur 492010,India [5]College of Materials Science and Engineering,Hunan University,Changsha 410082,Hunan,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第8期219-236,共18页纳微快报(英文版)

基　　金：supported by the National Research Foundation of Korea(RS-2023-00207831,RS-2024-00346153).

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 superhydrophilic electrode by depositing porous nickel–iron nanoparticles on annealed TiO_(2) 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℃.

关 键 词：TiO_(2)nanotubes NIFE Super-hydrophilic electrode Oxygen evolution reaction Anion-exchange membrane water electrolyzer 

分 类 号：O646[理学—物理化学]