Comparison of high surface Pt/C catalysts by cyclic voltammetry

被引：910

作者：

Pozio, A ^{[1
]}

De Francesco, M ^{[1
]}

Cemmi, A ^{[1
]}

Cardellini, F ^{[1
]}

Giorgi, L ^{[1
]}

机构：

[1] ENEA, Tecnol Energet Avanzate S Maria di Galeria, I-00060 Casaccia, Rome, Italy

来源：

JOURNAL OF POWER SOURCES | 2002年 / 105卷 / 01期

关键词：

electrocatalysts; gas diffusion electrodes; polymer electrolyte fuel cell; surface area;

D O I：

10.1016/S0378-7753(01)00921-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A detailed procedure for comparing high surface Pt/C catalysts was pointed out. Platinum dispersed carbon was prepared from carbonaceous material and chloroplatinic acid solution using sodium formiate. The real platinum metal surface area was evaluated by cyclic voltammetry on a thin porous coated disk electrode. The performance of catalysts prepared in our laboratory were similar to those of a well-known commercial one. The results show that electrochemical active surface (EAS) measurement is strongly influenced by the gas diffusion electrode (GDE) preparative method. It is only by means of a well-defined preparative procedure and data analysis that it is possible to use this technique to compare different carbon supported platinum catalysts. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：13 / 19

页数：7

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