Overlapping structure of platinum-iridium oxide layers and its electrocatalytic behavior on bifunctional oxygen electrode

被引：11
作者：
Kong, Fan-Dong [1 ,2 ]
Liu, Jing [1 ]
Ling, Ai-Xia [1 ]
Xu, Zhi-Qiang [1 ]
Shi, Mao-Jian [1 ]
Kong, Qing-Sheng [1 ]
Wang, Hui-Yun [1 ]
机构：
[1] Jining Med Univ, Sch Fundamental Sci, 16 He Hua St, Jining 272000, Peoples R China
[2] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2017年 / 90卷
基金：
中国国家自然科学基金;
关键词：
Platinum-doped iridium oxide; Iridium-doped platinum; Overlapping structure; Bifunctional oxygen catalyst; REGENERATIVE FUEL-CELL; GAS-DIFFUSION LAYER; NANOCOMPOSITE;
D O I：
10.1016/j.catcom.2016.11.012
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Pt-Ir/IrO2-PtO2 composite with an overlapping structure as oxygen-electrode catalyst has been prepared by doping Ir into Pt, doping Pt into IrO2, and then making the two layers combined with each other. This structure helps achieve positive interior modification on Pt and IrO2 and active coupling effect between Pt-Ir similar to (IrO2)-Ir-Pt layers. Electrochemical analyses show that Pt-Ir/IrO2-PtO2 possesses 81.4% higher ORR activity and 45.5% higher OER activity than Pt/IrO2 catalyst. Pt-Ir/IrO2-PtO2 especially exhibits remarkable ORR and OER durabilities in life tests, which are attributed to the stable overlapping structure. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：19 / 22
页数：4
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