کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7736650 | 1497974 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication of gas diffusion electrodes via electrophoretic deposition for high temperature polymer electrolyte membrane fuel cells
ترجمه فارسی عنوان
تولید الکترود های انتشار گاز از طریق رسوب الکتروفورز برای سلول های سوختی غشایی الکترولیتی پلیمر با درجه حرارت بالا
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کلمات کلیدی
رسوب الکتروفورز، سلول سوختی پلیمر الکترولیتی درجه حرارت بالا، الکترود انتشار گاز، مونتاژ الکترودهای غشایی، پتانسیل زتا،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
The Electrophoretic Deposition (EPD) method was adapted to fabricate Gas Diffusion Electrodes (GDEs) for Membrane Electrode Assemblies (MEA) for High Temperature Polymer Electrolyte Membrane Fuel Cells (HT-PEMFC) operating at 160 °C. Suspensions containing the Pt/C catalyst, polytetrafluoroethylene (PTFE) and NaCl were studied. Stable catalyst suspensions were observed when the NaCl concentrations were â¤0.1 mM. Mercury intrusion porosity analysis showed that the GDEs obtained via the EPD method had higher porosity (30.5 m2 gâ1) than the GDEs fabricated by the ultrasonic spray method (25.2 m2 gâ1). Compared to the ultrasonically sprayed MEA, the EPD MEA showed â¼12% increase in peak power at a slightly lower (â¼4 wt %) Pt loading. Electrochemical Impedance Spectroscopy (EIS) analysis showed a lower charge transfer resistance for the EPD MEA compared to the ultrasonically sprayed MEA while Cyclic Voltammetry (CV) analysis showed â¼16% higher Electrochemical Surface Area (ECSA) for the EPD MEA compared to the ultrasonically sprayed MEA. These observations were attributed to the higher porosity and better catalyst particle size distribution of the EPD GDEs. A comparison between PTFE and Nafion® ionomer in the Catalyst Layers (CL) of two EPD MEAs revealed that PTFE yielded MEAs with better performance and is therefore more suitable in HT-PEMFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 258, 15 July 2014, Pages 238-245
Journal: Journal of Power Sources - Volume 258, 15 July 2014, Pages 238-245
نویسندگان
Cecil Felix, Ting-Chu Jao, Sivakumar Pasupathi, Vladimir M. Linkov, Bruno G. Pollet,