| Autor: |
Leont’ev, I., Guterman, V., Pakhomova, E., Guterman, A., Mikheikin, A. |
| Zdroj: |
Nanotechnologies in Russia; Apr2009, Vol. 4 Issue 3/4, p170-175, 6p |
| Abstrakt: |
Pt3Co/C electrocatalysts produced by the wet synthesis method out of water-ethylene glycol solutions of Pt and Co precursors were investigated by X-ray diffraction in conjunction with electrochemical measurements. It was shown that varying the binary solvent composition is an effective way to regulate the nanoparticle and grain size distribution. It was found that the unit cell parameter of the Pt3Co/C electrocatalysts decreases nonlinearly as the particle sizes dwindle. The activity of the made-up Pt3Co/C catalysts for the ORR in H2SO4 solution enhances as the particle size, unit cell parameter, and dispersion of the grain size distribution decrease. All the samples studied show higher catalytic activities than the commercial Pt/C materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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