Comparison of high surface Pt/C catalysts by cyclic voltammetry
Comparison of high surface Pt/C catalysts by cyclic voltammetry
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DOI：
10.1016/s0378-7753(01)00921-1
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发表时间：
2002-03
影响因子：
9.2
通讯作者：
A. Pozio;M. D. Francesco;A. Cemmi;F. Cardellini;L. Giorgi
中科院分区：
文献类型：
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作者：
A. Pozio;M. D. Francesco;A. Cemmi;F. Cardellini;L. Giorgi
指出了比较高表面Pt/C催化剂的详细步骤。以碳质材料和氯铂酸溶液为原料，甲酸钠为催化剂制备了铂分散碳。通过在薄的多孔涂覆盘电极上的循环伏安法评估真实的铂金属表面积。实验室制备的催化剂的性能与一种著名的商业催化剂相似。结果表明，气体扩散电极（GDE）制备方法对电化学活性表面（EAS）的测定有很大的影响。只有通过明确的制备程序和数据分析，才有可能使用这种技术来比较不同的碳载铂催化剂。
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.