کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5788889 1414278 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of different plasma-treated cobalt oxide catalysts for oxygen reduction reaction in alkaline media
ترجمه فارسی عنوان
تشخیص کاتالیزورهای اکسید کبالت مختلف برای کاهش واکنش اکسیژن در رسانه های قلیایی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی
Plasma-synthesized cobalt oxide supported on carbon has been analyzed for its use for electrocatalytic oxygen reduction reaction (ORR) in alkaline anion exchange membrane fuel cells (AEMFC). This work presents the ORR activity in 0.1 mol L−1 KOH and 0.1 mol L−1 K2CO3 at 25 °C. Cyclic voltammetry (CV) was used to determine the potentials at which the ORR occurs and to evaluate the stability of catalyst. Moreover, a rotating ring-disk electrode (RRDE) was used to investigate the activity of the catalysts and the formation of the by-product hydroperoxide anion (HO2−) as well as to identify the preferred pathway of the ORR. Calculated kinetic parameters for the ORR for the cobalt catalysts are shown in this work together with a comparison to a commercial platinum catalyst. However, the cobalt oxide produced more by-products which could lead to damage of the membrane in a fuel cell through a radical attack of the polymer backbone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science Bulletin - Volume 61, Issue 8, April 2016, Pages 612-618
نویسندگان
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