Amorphous Fe-Co oxide as an active and durable bifunctional catalyst for the urea-assisted H2 evolution reaction in seawater

被引：48
|
作者：
Wei, Tianran [1 ,2 ]
Meng, Ge [1 ]
Zhou, Yinhai [2 ,3 ]
Wang, Zhifeng [4 ]
Liu, Qian [5 ]
Luo, Jun [6 ]
Liu, Xijun [2 ]
机构：
[1] Wenzhou Univ, Coll Chem & Mat Engn, Key Lab Carbon Mat Zhejiang Prov, Wenzhou 325035, Peoples R China
[2] Guangxi Univ, Sch Resources Environm & Mat, State Key Lab Featured Met Mat & Life cycle Safety, Nanning 530004, Peoples R China
[3] Henan Univ Sci & Technol, Sch Chem & Chem Engn, Luoyang 471023, Peoples R China
[4] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300401, Peoples R China
[5] Chengdu Univ, Inst Adv Study, Chengdu 610106, Sichuan, Peoples R China
[6] Univ Elect Sci & Technol China, Shenzhen Inst Adv Study, ShenSi Lab, Shenzhen 518110, Peoples R China
来源：
CHEMICAL COMMUNICATIONS | 2023年 / 59卷 / 66期
基金：
中国国家自然科学基金;
关键词：
Aluminum alloys - Binary alloys - Catalyst activity - Cobalt alloys - Cobalt compounds - Electrodes - Hydrogen production - Iron alloys - Iron oxides - Metabolism - Seawater;
D O I：
10.1039/d3cc02419a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study, we prepared amorphous iron-cobalt oxide through the dealloying of trimetallic FeCoAl, showing excellent performance in both urea oxidation and hydrogen evolution reactions (UOR and HER) in alkaline seawater. The catalyst demonstrated stable UOR and HER activity during long-term operations due to the abundant active sites and oxygen vacancies. The catalyst required applied potentials of 1.52 and -0.185 V to yield 100 mA cm(-2) for the UOR and HER, respectively. Moreover, when used as both the cathode and anode, the electrolyzer required a working voltage of 1.68 V to yield 100 mA cm(-2) for urea-assisted hydrogen production.
引用
收藏
页码：9992 / 9995
页数：4
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