Journal of Nanoscience and Nanotechnology 2013-03-01

Reduction procedure effect on the electrochemical properties of conductive carbon black supported Pt-Pd electrocatalysts.

Jae Young Park, Soo-Jin Park, Yongju Jung, Seok Kim

文献索引：J. Nanosci. Nanotechnol. 13(3) , 2213-7, (2013)

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摘要

Conductive carbon black supported Pt-Pd nanocomposites were prepared to study a difference of simultaneously and sequentially reduced Pt-Pd nanocomposites using polyol method. The concentration of Pt-Pd alloyed metals on carbon blacks (CB) was adjusted to 20 wt%. The catalysts could be characterized by transmission electron microscopy, X-ray diffraction and thermogravimetric analysis. The electrochemical activities of Pt-Pd were measured by cyclic voltammograms. As a result, electrochemical active surface area (ESA) value of sequentially deposited Pt-Pd/CB was shown to 66 m2/g, which was higher than 55 m2/g of simultaneously deposited Pt-Pd/CB. Besides, average particle size of sequentially deposited Pt-Pd/CB was calculated to 1.7 nm which was smaller than 2.2 nm of simultaneously deposited Pt-Pd/CB.

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