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A Pt-Bi bimetallic nanoparticle catalyst for direct electrooxidation of formic acid in fuel cells
- Source :
- Frontiers of Environmental Science & Engineering; June 2013, Vol. 7 Issue: 3 p388-394, 7p
- Publication Year :
- 2013
-
Abstract
- 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.
Details
- Language :
- English
- ISSN :
- 20952201
- Volume :
- 7
- Issue :
- 3
- Database :
- Supplemental Index
- Journal :
- Frontiers of Environmental Science & Engineering
- Publication Type :
- Periodical
- Accession number :
- ejs30444693
- Full Text :
- https://doi.org/10.1007/s11783-012-0475-y