标题
作者
作者:Liu, BC (Liu, Baichen)[1 ]; Huang, BB (Huang, Binbin)[1 ]; Lin, C (Lin, Cheng)[2,3 ]; Ye, JS (Ye, Jianshan)[1 ]; Ouyang, LZ (Ouyang, Liuzhang)[2,3 ]
期刊信息
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文献类型:Article
摘要
In recent years, non-precious metal electrocatalysts for oxygen reduction reaction (ORR) have attracted tremendous attention due to their high catalytic activity, long-term stability and excellent methanol tolerance. Herein, the porous carbon supported Fe-N-C catalysts for ORR were synthesized by direct pyrolysis of ferric chloride, 6-Chloropyridazin-3-amine and carbon black. Variation of pyrolysis temperature during the synthesis process leads to the difference in ORR catalytic activity. High pyrolysis temperature is beneficial to the formation of the "N-Fe" active sites and high electrical conductivity, but the excessive temperature will cause the decomposition of nitrogen-containing active sites, which are revealed by Raman, TGA and XPS. A series of synthesis and characterization experiments with/without nitrogen or iron in carbon black indicate that the coordination of iron and nitrogen plays a crucial role in achieving excellent ORR performances. Electrochemical test results show that the catalyst pyrolyzed at 800 degrees C (Fe-N-C-800) exhibits excellent ORR catalytic activity, better methanol tolerance and higher stability compared with commercial Pt/C catalyst in both alkaline and acidic conditions. (C) 2017 Elsevier B.V. All rights reserved.
关键词
作者关键词:Fuel cells; Oxygen reduction reaction; Fe-N-C catalysts; Carbon black; 6-Chloropyridazin-3-amine
作者信息
通讯作者地址:Ye, JS; Ouyang, LZ (通讯作者)
 | South China Univ Technol, Sch Chem & Chem Engn, Guangzhou, Guangdong, Peoples R China. |
地址:
电子邮件地址:jsye@scut.edu.cn; meouyang@scut.edu.cn
出版商
类别分类
研究方向:Chemistry; Materials Science; Physics
Web of Science 类别:Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter