| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10269052 | Electrochimica Acta | 2011 | 7 Pages |
Abstract
Carbon-supported core-shell structured Ru@PtxPdy/C catalysts with PtxPdy as shell and nano-sized Ru as core are prepared by a successive reduction procedure. The catalysts are extensively characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The formic acid oxidation activity of Ru@PtxPdy/C varies with the varying Pt:Pd atomic ratio. The peak oxidation potential on Ru@Pt1Pd2/C shifts negatively for about 200Â mV compared with that of Pd/C. The higher electro-catalytic activity toward formic acid oxidation on core-shell structured Ru@PtxPdy/C catalyst than that on PtxPdy/C suggests the high utilization of noble metals. In addition to the enhanced noble metal utilization, Ru@PtxPdy/C catalyst also shows improved stability as evidenced by chronoamperometric evaluations.
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Authors
Haili Gao, Shijun Liao, Jianhuang Zeng, Yichun Xie, Dai Dang,