کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1280063 | 1497598 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of a platinum catalyst supported on a hydrogen peroxide-treated carbon black
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Investigation of a platinum catalyst supported on a hydrogen peroxide-treated carbon black Investigation of a platinum catalyst supported on a hydrogen peroxide-treated carbon black](/preview/png/1280063.png)
چکیده انگلیسی
A hydrogen peroxide-treated carbon support was used to prepare electrocatalysts for low temperature fuel cells. The electrochemical stability of the Pt/C catalysts was evaluated by potential scan tests. The results show that the oxidative treatment introduces oxygen-bearing functional groups onto the support surface. These functional groups connect with metal nanoparticles via O atoms so as to alleviate the agglomeration of supported nanocatalysts. During the test, the mean particle size of catalysts increased from 2.5Â nm and 2.6Â nm to 5.3Â nm and 4.8Â nm for untreated and treated carbon support, respectively. Electrochemical surface area measurements also show that the oxidative treatment of carbon support enhanced the electrochemical stability of Pt/C catalysts. It is suggested that the chemical interaction between the metal particle and the oxygen-bearing functional group plays an important role in immobilizing catalyst nanoparticles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 35, Issue 19, October 2010, Pages 10102-10108
Journal: International Journal of Hydrogen Energy - Volume 35, Issue 19, October 2010, Pages 10102-10108
نویسندگان
Weimin Chen, Baida Qu,