کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6471361 1424127 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrocatalysis of oxygen reduction by iron-containing nitrogen-doped carbon aerogels in alkaline solution
ترجمه فارسی عنوان
الکترو کاتالیزوری کاهش اکسیژن توسط آلیاژل های کربنی نیتروژن حاوی آهن در محلول قلیایی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


- Fe,N-doped carbon aerogels (CAs) were prepared by pyrolysis of organic aerogels.
- ORR activity of CAs in alkaline solution increased with N and Fe content.
- ORR activity of CAs was decreased by blocking the Fe-containing centres with cyanide.
- Fe,N-doped CAs are suitable cathode materials for alkaline membrane fuel cells

Iron-containing nitrogen-doped carbon aerogels (CAs) were prepared by pyrolysis of organic aerogels of variable composition synthesised from melamine, 5-methylresorcinol and 2,6-dihydroxy-4-methylbenzoic acid. The structure and composition of the catalyst materials were characterised by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, atomic absorption spectroscopy and N2-adsorption analysis. The electrocatalytic activity of CAs for oxygen reduction reaction (ORR) was evaluated using the rotating disk electrode (RDE) method in alkaline solution and increase of the ORR activity with increasing the nitrogen and iron content was revealed. Low peroxide production on Fe-containing N-doped CA-based catalysts and their high methanol tolerance suggest that these could be suitable cathode catalysts for alkaline fuel cells.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 230, 10 March 2017, Pages 81-88
نویسندگان
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