کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
181314 459400 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel method for preparing PEMFC electrodes by the ultrasonic and sonoelectrochemical techniques
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A novel method for preparing PEMFC electrodes by the ultrasonic and sonoelectrochemical techniques
چکیده انگلیسی

Novel ultrasonic and sonoelectrochemical methods for preparing Proton Exchange Membrane Fuel Cell (PEMFC) electrodes are described. Platinum loaded on Nafion-bonded carbon anodes in Membrane Electrode Assemblies (MEAs) were prepared in K2PtCl4 aqueous solutions by galvanostatic pulse electrodeposition in the absence and presence of power ultrasound (20 kHz). It was found that PEMFC electrodes prepared sonoelectrochemically showed better performance compared to those prepared by (i) galvanostatic pulse method only (i.e. silent conditions) and (ii) conventional method. Maximum power densities of 98.5 mW cm−2 were found for anodes prepared sonoelectrochemically compared with 91.5 mW cm−2 (by galvanostatic pulse method alone) and 86 mW cm−2 (by conventional method).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 11, Issue 7, July 2009, Pages 1445–1448
نویسندگان
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