کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1415251 985927 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High performance of carbon nanowall supported Pt catalyst for methanol electro-oxidation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
High performance of carbon nanowall supported Pt catalyst for methanol electro-oxidation
چکیده انگلیسی

The performance of Pt catalyst supported on carbon nanowall (CNW) and vertically aligned carbon nanofiber (VACNF) for methanol electro-oxidation has been compared. Pt/CNW and Pt/VACNF electrodes were fabricated by growing CNW and VACNF on carbon papers with inductively coupled plasma enhanced chemical vapor deposition, followed by sputter deposition of Pt nanoparticles using a radio-frequency magnetron sputtering system. Scanning electron microscopy and transmission electron microscopy results show that the Pt nanoparticles are homogeneously dispersed on the surface of CNW and VACNF. The histograms of Pt nanoparticle diameter for both electrodes reveal that the Pt/CNW electrode shows a broader particle size distribution. Cyclic voltammetric measurements show that the Pt/CNW electrode has a better electrochemical activity and methanol oxidation property than Pt/VACNF electrode. The unique structure of CNW ensures that Pt/CNW electrode has a faster electron transport rate and shorter electron transport path, which lead to an obvious improvement of electro-catalysis activity compared to the Pt/VACNF electrode and show a further potential application in direct alcohol fuel cells.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 50, Issue 10, August 2012, Pages 3731–3738
نویسندگان
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