کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6603156 1424085 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design and synthesis of conductive carbon polyhedrons enriched with Mn-Oxide active-centres for oxygen reduction reaction
ترجمه فارسی عنوان
طراحی و سنتز پلی یگردان های کربنی هدایت شده غنی شده با مراکز فعال مونو اکسید برای واکنش اکسیژن کاهش
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
The development of efficient, low-cost and stable electrocatalysts as the alternative to platinum for the oxygen reduction reaction (ORR) is of significance for many important electrochemical devices, such as fuel cells and metal-air batteries. Herein we discuss the design and synthesis of a MnxOy/N-C hybrid catalyst that can address both the activity and durability issues caused by the high productivity of peroxide (H2O2) in nitrogen-doped carbon (N-C). The high activity and stability of the MnxOy/N-C-3 catalyst is ascribed to its novel hybrid structure, in which MnxOy is a good catalyst for decomposition of peroxide, while N-C not only catalyses the ORR but also prevents MnxOy agglomeration. RRDE study indicates a typical 4-electron ORR pathway with very low peroxide production (∼1.9%) and considerable stability. In light of the low cost and high earth abundance of Mn, the highly active MnxOy/N-C is a promising candidate to be used as a cathode material in metal-air batteries and alkaline fuel cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 272, 10 May 2018, Pages 169-175
نویسندگان
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