1. Synthesis of defect-rich palladium-tin alloy nanochain networks for formic acid oxidation.
- Author
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Gong, Yuyan, Liu, Xuehua, Gong, Yangyang, Wu, Diben, Xu, Binghui, Bi, Lei, Zhang, Lian Ying, and Zhao, X.S.
- Subjects
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PALLADIUM alloys , *OXIDATION of formic acid , *ELECTRONIC structure , *CATALYTIC activity , *FORMIC acid - Abstract
Unique and novel Pd 4 Sn nanochain networks were successfully synthesized with an average diameter of 5 nm, rendering a modified Pd electronic structure with rich defects such as atomic corners, steps or ledges as catalytic active sites for great enhancement of charge transfer and electrode kinetics. The prepared Pd 4 Sn nanochain networks held an electrochemically active surface area as high as 119.40 m 2 g −1 , and exhibited higher catalytic activity and stability toward formic acid oxidation compared with Pd 3 Sn nanochain networks, Pd 5 Sn nanochain networks, Pd 4 Sn dendrites and Pd/C. The fundamental insight of the enhancement mechanism is discussed, and this work offers a novel, less expensive but highly active catalyst for direct formic acid fuel cells. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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