超细Pd纳米线表层富Pt作为耐久性氧还原催化剂研究

doi:10.13208/j.electrochem.170113

电化学（中英文） ›› 2017, Vol. 23 ›› Issue (6): 619-626. doi: 10.13208/j.electrochem.170113

超细Pd纳米线表层富Pt作为耐久性氧还原催化剂研究

王新^{^1.2.3}，熊云杰^{^1.2.3}，邹亮亮¹*，黄庆红¹，邹志青¹，杨辉¹*

1.中国科学院上海高等研究院，上海201210；2. 中国科学院大学，北京100049；3. 上海科技大学，上海 201210

收稿日期:2017-01-13 修回日期:2017-03-01 出版日期:2017-12-28 发布日期:2017-03-03
通讯作者: 邹亮亮，杨辉 E-mail:yangh@sari.ac.cn; zoull@sari.ac.cn
基金资助:
国家重点研发计划课题（No. 2016YFB010201）、国家自然科学基金项目（No. 21503262，No. 21533005）资助

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

WANG Xin^1.2.3, XIONG Yun-jie ^1.2.3, ZOU Liang-liang¹* ,HUANG Qing-hong¹, ZOU Zhi-qing¹, YANG Hui¹*

1.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China；2. University of Chinese Academy of Sciences, Beijing 100039, China；3. ShanghaiTech University, Shanghai 201210, China

Received:2017-01-13 Revised:2017-03-01 Published:2017-12-28 Online:2017-03-03
Contact: ZOU Liang-liang, YANG Hui E-mail:yangh@sari.ac.cn; zoull@sari.ac.cn

摘要/Abstract

摘要：

本文控制合成一维方向生长的直径为1.5 nm，长度为11.8 nm的超细Pd纳米线，结合欠电位沉积方法在其表面制备了不同Pt原子层的Pd@Pt核壳结构纳米电催化剂. 高分辨透射电镜和光电子能谱结果证实了这种核壳结构及Pt在Pd纳米线上的均匀分布. 相比于商业化Pt黑催化剂，该核壳结构电催化剂对酸性介质中的氧气还原反应呈现了较高的电催化活性和增强的耐久性. 显著增强的耐久性可归属于催化剂一维结构的稳定性.

关键词: 氧还原, 电催化, Pd@Pt核壳结构, 超细纳米线, 耐久性

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.

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

中图分类号:

O646
TM911

王新，熊云杰，邹亮亮，黄庆红，邹志青，杨辉. 超细Pd纳米线表层富Pt作为耐久性氧还原催化剂研究[J]. 电化学（中英文）, 2017, 23(6): 619-626.

WANG Xin, XIONG Yun-jie, ZOU Liang-liang, HUANG Qing-hong, ZOU Zhi-qing, YANG Hui. Core-shell Pd@Pt Ultrathin Nanowires as Durable Oxygen Reduction Electrocatalysts[J]. Journal of Electrochemistry, 2017, 23(6): 619-626.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.170113

https://electrochem.xmu.edu.cn/CN/Y2017/V23/I6/619

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超细Pd纳米线表层富Pt作为耐久性氧还原催化剂研究

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

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