کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5145868 | 1497377 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mixed-reactant ethanol fuel cell using an electrochemically deposited Ag@Pt tolerant cathode
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Mixed-reactant ethanol fuel cell using an electrochemically deposited Ag@Pt tolerant cathode Mixed-reactant ethanol fuel cell using an electrochemically deposited Ag@Pt tolerant cathode](/preview/png/5145868.png)
چکیده انگلیسی
In the present work, we report an ethanol tolerant cathode catalyst developed through a two-stages electrodeposition of Pt and Ag nanoparticles on a glassy carbon electrode using chronoamperometric and voltammetric techniques. The resulting nanoparticles were characterized by Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), X-Ray Photoelectron Spectroscopy (XPS) and electrochemical techniques. According to the SEM study, the synthetized particles have semi-spherical shape and their average diameter is 200 nm. The catalyst showed a layer onto layer or a core-shell-like architecture, where the silver layer that was built onto the platinum surface covers the nanoparticles. This Ag@Pt catalyst was successfully evaluated for the oxygen reduction reaction, involving a four-electron transfer mechanism. Additionally, it exhibited high tolerance to ethanol oxidation reaction. The onset potential of the ORR was 0.81 V in presence of 5 M EtOH. The catalyst was further tested as cathode in an alkaline mixed-reactant fuel cell using 1 M EtOH + O2, yielding more than 400 mV and 20 μW cmâ2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 48, 28 December 2016, Pages 23417-23424
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 48, 28 December 2016, Pages 23417-23424
نویسندگان
J.C. Abrego-MartÃnez, Youling Wang, L.H. Mendoza-Huizar, J. Ledesma-Garcia, F.M. Cuevas-Muñiz, M. Mohamedi, L.G. Arriaga,