篇目详细内容 |
【篇名】 |
A Pt-Bi bimetallic nanoparticle catalyst for direct electro-oxidation of formic acid in fuel cells |
【刊名】 |
Frontiers of Environmental Science and Engineering in China |
【刊名缩写】 |
Front.Environ.Sci.Engin.China |
【ISSN】 |
2095-2201 |
【EISSN】 |
2095-221X |
【DOI】 |
10.1007/s11783-012-0475-y |
【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
【出版年】 |
2013 |
【卷期】 |
7
卷3期 |
【页码】 |
388-394
页,共
7
页 |
【作者】 |
Shu-;
Hong LI;
Yue ZHAO;
Jian CHU;
Wen-;
Wei LI;
Han-;
Qing YU;
Gang LIU;
Yang-;
Chao TIAN;
|
【关键词】 |
catalyst; electrochemical deposition; formic acid oxidation; fuel cell; gold wire array; microfabrication |
【摘要】 |
Direct formic acid fuel cells are a promising portable power-generating device, and the development of efficient anodic catalysts is essential for such a fuel cell. In this work Pt-Bi nanoparticles supported on micro-fabricated gold wire array substrate were synthesized using an electrochemical deposition method for formic acid oxidation in fuel cells. The surface morphology and element components of the Pt-Bi/Au nanoparticles were characterized, and the catalytic activities of the three Pt-Bi/Au nanoparticle electrodes with different Pt/Bi ratios for formic acid oxidation were evaluated. It was found that Pt4Bi96/Au had a much higher catalytic activity than Pt11Bi89/Au and Pt13Bi87/Au, and Pt4Bi96/Au exhibited a current density of 2.7?mA·cm?2, which was 27-times greater than that of Pt/Au. The electro-catalytic activity of the Pt-Bi/Au electrode for formic acid oxidation increased with the increasing Bi content, suggesting that it would be possible to achieve an efficient formic acid oxidation on the low Pt-loading. Therefore, the Pt-Bi/Au electrode offers a promising catalyst with a high activity for direct oxidation of formic acid in fuel cells. |