Soft-template synthesis of mesoporous non-precious metal catalyst with Fe-NX/C active sites for oxygen reduction reaction in fuel cells

被引:121
作者
Mun, Yeongdong [1 ]
Kim, Min Jeong [2 ]
Park, Shin-Ae [3 ]
Lee, Eunsung [4 ]
Ye, Youngjin [1 ]
Lee, Seonggyu [1 ]
Kim, Yong-Tae [3 ]
Kim, Sungjun [2 ]
Kim, Ok-Hee [5 ]
Cho, Yong-Hun [6 ]
Sung, Yung-Eun [2 ]
Lee, Jinwoo [1 ]
机构
[1] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, 77 Cheongam Ro, Pohang 790784, Gyeongbuk, South Korea
[2] SNU, School Chem & Biol Engn, IBS, Ctr Nanoparticle Res, Seoul 08826, South Korea
[3] Pusan Natl Univ, Dept Energy Syst, Busan 609735, South Korea
[4] Pohang Univ Sci & Technol POSTECH, Dept Chem, 77 Cheongcan Ro, Pohang 790784, Gyeongbuk, South Korea
[5] Republ Korea Naval Acad, Dept Sci, Chang Won 646797, South Korea
[6] Kangwon Natl Univ, Dept Chem Engn, Samcheok 245711, South Korea
关键词
Non-precious metal catalyst; Electrocatalyst; Oxygen reduction reaction; Fuel cell; Mesoporous material; HIGH ELECTROCATALYTIC ACTIVITY; HIGH-PERFORMANCE; DOPED CARBON; FE/N/C-CATALYSTS; PHENOLIC RESIN; DIRECT ACCESS; NITROGEN; MEMBRANE; IRON; ALKALINE;
D O I
10.1016/j.apcatb.2017.10.015
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We synthesized ordered mesoporous Fe/N/C with highly active Fe-N-X/C sitesdenoted as m-FePhen-C as a non precious metal catalyst (NPMC) for the oxygen reduction reaction in fuel cells. This was the first study that incorporated a catalyst precursor with Fe-N coordination directly in a simple block co-polymer-assisted soft template method for the synthesis of mesoporous Fe/N/C. The synthesized catalyst (m-FePhen-C) showed a high catalytic performance comparable to that of PVC in half-cell tests, and a membrane electrode assembly (MEA) with an m-FePhen-C cathode exhibited 40% higher power density than did an MEA with a commercial Pt/C cathode in single-cell tests, with comparable electrode thicknesses. This result is highly meaningful in that generation of the Fe-N-x/C active sites and formation of ordered mesoporous structure were achieved simultaneously in the simple soft-template-assisted process, and in that the advantages of mesoporous structure with appropriate pore size in metal-containing NPMC were elucidated for high-performance MEAs.
引用
收藏
页码:191 / 199
页数:9
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