On the determination of platinum particle size in carbon-supported platinum electrocatalysts for fuel cell applications

被引：37
|
作者：
Stevens, DA
Zhang, S
Chen, Z
Dahn, JR
机构：
[1] Dalhousie Univ, Dept Phys, Halifax, NS B3H 3J5, Canada
[2] Dalhousie Univ, Dept Chem, Halifax, NS B3H 3J5, Canada
来源：
CARBON | 2003年 / 41卷 / 14期
关键词：
carbon black; catalyst support; small angle X-ray scattering;
D O I：
10.1016/S0008-6223(03)00388-9
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：
Using a conventional laboratory diffractometer, small angle X-ray scattering (SAXS) was used to determine the average platinum particle size in samples of carbon with a range of platinum loadings. The results obtained were compared with those obtained from wide-angle X-ray diffraction (WAXS) studies. SAXS was more effective than WAXS for determining the average platinum particle size in samples where the grains were so small that the resultant diffraction peaks in the WAXS profiles were too broad to accurately determine the peak width for use in the Scherrer equation. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2769 / 2777
页数：9
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