کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6618357 | 459654 | 2012 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of gas diffusion electrodes for cogeneration of chemicals and electricity
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
This study reports the development and evaluation of gas diffusion electrodes (GDEs) for application in a fuel cell reactor aimed at the production of hydroxylamine. Electrode materials manufactured by two different methods are reported. The composition of the active layer of these electrodes has been tailored for application as gas diffusion cathodes for a NO-H2 fuel cell. The results on physico-chemical characterization of the catalyst layers (density, water porosity, total porosity and BET surface area) are discussed in relation with the differences in their composition (carbonaceous powder and binder used, ratios carbon to binder). The gas porous electrodes were first tested in an electrochemical half cell configuration (3-electrode configuration) for their ability to reduce diluted nitric oxide (6% in nitrogen). Later, the performance in a NO-H2 fuel cell was evaluated for the promising electrodes in a single cell set-up (2-electrode configuration). It was observed that non-platinized electrodes offer an acceptable performance for NO reduction. In the single cell set-up, current densities of â12Â mAÂ cmâ2 for a non-platinized electrode and â10Â mAÂ cmâ2 for a non-catalyzed activated charcoal electrode were obtained at 50Â mV cell voltage, vs. 17Â mAÂ cmâ2 for a platinized charcoal electrode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 82, 1 November 2012, Pages 415-426
Journal: Electrochimica Acta - Volume 82, 1 November 2012, Pages 415-426
نویسندگان
Yolanda Alvarez-Gallego, Xochitl Dominguez-Benetton, Deepak Pant, Ludo Diels, Karolien Vanbroekhoven, Inge Genné, Philippe Vermeiren,