Core-shell Pd@Pt Ultrathin Nanowires as Durable Oxygen Reduction Electrocatalysts

Authors

Xin WANG, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;University of Chinese Academy of Sciences, Beijing 100039, China;ShanghaiTech University, Shanghai 201210, China;
Yun-jie XIONG, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;University of Chinese Academy of Sciences, Beijing 100039, China;ShanghaiTech University, Shanghai 201210, China;
Liang-liang ZOU, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;Follow
Qing-hong HUANG, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;
Zhi-qing ZOU, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;
Hui YANG, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;Follow

Corresponding Author

Liang-liang ZOU(zoull@sari.ac.cn);
Hui YANG(yangh@sari.ac.cn)

Abstract

This paper describes a simple CO-assisted reduction approach for the controllable synthesis of ultrathin Pd nanowires along the one-dimensional (1D) direction. Ultrathin Pt films from one to several atomic layers were successfully decorated onto ultrathin Pd nanowires by utilizing Cu UPD deposition, and followed by in-situ redox replacement reaction of UPD Cu by Pt. The core–shell structure and composition of the Pd@Pt ultrathin nanowires have been verified using transmission electron microscopy and energy dispersive X-ray spectrometry. The core–shell Pd@Pt ultrathin nanowires exhibited comparative electrocatalytic activity and improved durability for the oxygen reduction reaction in comparison with commercial Pt black. The enhanced durability of the core-shell Pd@Pt catalyst could be ascribed to 1D structural stability.

Graphical Abstract

Keywords

oxygen reduction reaction, electrocatalysis, Pd core/Pt shell, ultrathin nanowire, durability

DOI Link

https://doi.org/10.13208/j.electrochem.170113

Publication Date

2017-12-28

Online Available Date

2017-03-03

Revised Date

2017-03-01

Received Date

2017-01-13

Recommended Citation

Xin WANG, Yun-jie XIONG, Liang-liang ZOU, Qing-hong HUANG, Zhi-qing ZOU, Hui YANG. Core-shell Pd@Pt Ultrathin Nanowires as Durable Oxygen Reduction Electrocatalysts[J]. Journal of Electrochemistry, 2017 , 23(6): 619-626.
DOI: 10.13208/j.electrochem.170113
Available at: https://jelectrochem.xmu.edu.cn/journal/vol23/iss6/1