کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1290884 | 973340 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and characterization of carbon-supported PtTi alloy electrocatalysts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Carbon-supported PtTi alloy nanoparticles with well-controlled particle size, dispersity, and composition uniformity, have been synthesized by thermal decomposition and reduction of Pt and Ti precursors at elevated temperatures. The synthesized alloy nanoparticles were characterized by X-ray diffraction, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and energy-dispersive spectroscopy. The catalytic activities of these alloys towards molecular oxygen electro-reduction were screened by the hydrodynamic RDE technique. Among the compositions tested, Pt75Ti25 displayed the highest catalytic activity and had a twofold improvement in catalytic performance as compared to a benchmark Pt/C catalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 175, Issue 2, 10 January 2008, Pages 794–799
Journal: Journal of Power Sources - Volume 175, Issue 2, 10 January 2008, Pages 794–799
نویسندگان
Errun Ding, Karren L. More, Ting He,