Pd skin on AuCu intermetallic nanoparticles: A highly active electrocatalyst for oxygen reduction reaction in alkaline media

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• 作者：Gongwei Wang^aAuthor Vitae ; Jianxin Guan^aAuthor Vitae ; Li Xiao^a ; ^{chem.lily@whu.edu.cn}Author Vitae ; Bing Huang^aAuthor Vitae ; Nian Wu^aAuthor Vitae ; Juntao Lu^aAuthor Vitae ; Lin Zhuang^a ; ^b ; ^{lzhuang@whu.edu.cn}Author Vitae
• 关键词：Oxygen reduction ; Alkaline media ; Core&ndash ; shell structure ; AuCu intermetallic nanoparticles ; Pd skin
• 刊名：Nano Energy
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：29
• 期：Complete
• 页码：268-274
• 全文大小：2126 K
• 卷排序：29

文摘

A Pd skin with 2–3 atomic layers on AuCu intermetallic nanoparticles (PdSAuCu iNPs) is controllably fabricated. The PdSAuCu iNPs exhibit excellent electrocatalytic activity towards the oxygen reduction reaction (ORR) in alkaline media, far better and more stable than the commercial Pt/C catalyst. The AuCu intermetallic substrate causes a shrink strain in Pd lattice of the skin, which reduces the oxygen affinity of Pd and thus enhances the catalytic activity.