کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7705562 | 1497296 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A model for direct ethanol fuel cells considering variations in the concentration of the species
ترجمه فارسی عنوان
یک مدل برای سلول های مستقیم اتانول با توجه به تغییرات در غلظت گونه
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کلمات کلیدی
سلول سوخت مستقیم اتانول، روش عنصر محدود تلفات بیش از حد بالقوه، قطر مول از گونه ها، اتانول،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
The fuel cell is an electrochemical device that converts chemical energy directly into electricity and is more efficient than traditional power generators. In this work, we developed a mathematical model for a direct ethanol fuel cell (DEFC), which considers the flow and concentration of species dependent on time and space for the calculation of losses overpotentials. In addition, the concentration of each species is modeled according to the current density of the DEFC. The finite element method is used to calculate the flow and concentration of the species in different layers of the cell (inlet and outlet channels, diffusion layer and catalyst layer). The model takes into account the losses overpotentials at the anode and at the cathode and the passage of ethanol through the membrane. The voltage and power density of the cell are calculated with different catalysts, temperatures and concentrations of ethanol. A result is shown for limiting current density for low ethanol concentrations. The results obtained compare favourably with the data found in the literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 29, 19 July 2018, Pages 13475-13488
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 29, 19 July 2018, Pages 13475-13488
نویسندگان
M.M. De Souza, R.S. Gomes, A.L. De Bortoli,