کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6662127 | 1426565 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of an efficient Fe/N/C electrocatalyst and its application for oxygen reduction reaction in alkaline media
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
We demonstrate a highly efficient Fe/N/C electrocatalyst for oxygen reduction reaction (ORR) which was prepared through MgO template directed approach followed by pyrolysis of iron salt and nitrogen-rich carbon precursors. The Fe/N/C electrocatalyst displays a porous carbon structure with iron atoms, Fe3C nanoparticles and Fe-Nx as active sites which endow the electrocatalyst with plenty of accessible and active sites that are favorable for the enhanced electrocatalytic activity towards ORR. The as-obtained Fe/N/C electrocatalyst exhibits excellent electrocatalytic performance for ORR matching those of the state-of-the-art commercial Pt/C with a higher catalytic activity via a four-electron transfer process, a comparable onset and half-wave potentials, and a peroxide yield lower than 10% in alkaline media. Besides, the Fe/N/C electrocatalyst displays a higher durability and negligible methanol-crossover effect compared with Pt/C electrocatalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 810, 1 February 2018, Pages 62-68
Journal: Journal of Electroanalytical Chemistry - Volume 810, 1 February 2018, Pages 62-68
نویسندگان
Chunxia Wang, Fan Yang, Tian Qiu, Yan Cao, Huangliang Zhong, Changchun Yu, Ranjia Li, Lanqun Mao, Yongfeng Li,