کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6610983 | 459557 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cobalt-Lead-Manganese oxides combined cathode catalyst for air electrode in Zinc -air battery
ترجمه فارسی عنوان
کاتالیست کاتدی کاتالیست کبالت-سرب-منگنز برای الکترود هوا در باتری روی
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کلمات کلیدی
اکسید منگنز، اکسید سرب، اکسید کبالت، واکنش کاهش اکسیژن، ولتامتری سیسیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Bi and tri metalic oxides based on Mn, Pb and Co composite catalysts were prepared by oxidation of metal acetates with KMnO4. The structure of the catalysts was characterized by X-ray diffraction (XRD). It is found that the Mn2Pb2CoOx catalyst has amorphous structure and contains various oxides of Mn, Pb and Co. Electrocatalytic activity of catalysts in 6Â M KOH was studied using Cyclic Voltammetry (CV) and polarization. Cyclic Voltammetry plot of Mn2Pb2CoOx catalyst showed higher electrocatalytic activity towards the Oxygen Reduction Reaction (ORR) compared to other tri and bimetallic composite catalysts. The kinetics of ORR on the catalysts was investigated using the rotating disk electrode technique in 6Â M KOH solution. From the slope of Koutecky-Levich plots, it is evident that the ORR on Mn2Pb2CoOx is a 4-electron transfer process. With these inherent features, the zinc-air battery was fabricated using various catalysts and their performance was examined for practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 176, 10 September 2015, Pages 649-656
Journal: Electrochimica Acta - Volume 176, 10 September 2015, Pages 649-656
نویسندگان
Ch. Srinivasa Rao, G. Gunasekaran,