Tuning Surface Structure and Strain in Pd-Pt Core-Shell Nanocrystals for Enhanced Electrocatalytic Oxygen Reduction

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• 作者：Yalin Xiong ; Hao Shan ; Zhengnan Zhou ; Yucong Yan ; Wenlong Chen ; Yaxiong Yang ; Yongfeng Liu ; He Tian ; Jianbo Wu ; Hui Zhang and Deren Yang
• 刊名：Small
• 出版年：2017
• 出版时间：February 17, 2017
• 年：2017
• 卷：13
• 期：7
• 全文大小：4633K
• ISSN：1613-6829

文摘

Icosahedral, octahedral, and cubic Pd@Pt core–shell nanocrystals with two atomic Pt layers are epitaxially generated under thermodynamic control. Such icosahedra exhibit remarkably enhanced catalytic properties for oxygen reduction reaction compared to the octahedra and cubes as well as commercial Pt/C, which can be attributed to ligand and geometry effects, especially twin-induced strain effect that is revealed by geometrical phase analysis.