Nitrogen-Doped Carbon Vesicles with Dual Iron-Based Sites for Efficient Oxygen Reduction

被引：25
作者：
Li, Qianru [1 ,2 ]
Wan, Gang [1 ,2 ]
Zhao, Han [1 ,2 ]
Pan, Linyu [1 ,2 ]
Wang, Ning [1 ,2 ]
Zhao, Wanpeng [1 ,2 ]
Zhou, Xiaoxia [1 ,2 ]
Cui, Xiangzhi [1 ,2 ]
Chen, Hangrong [1 ,2 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Ding Xi Rd, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHEMSUSCHEM | 2017年 / 10卷 / 03期
关键词：
carbide; electrocatalyst; iron; mesoporous; oxygen reduction reaction; MEMBRANE FUEL-CELLS; ACTIVE-SITES; TETRAMETHOXYPHENYL PORPHYRIN; COMPOSITE ELECTROCATALYST; METAL ELECTROCATALYST; ENERGY-CONVERSION; GRAPHITIC LAYERS; CATHODE CATALYST; PERFORMANCE; GRAPHENE;
D O I：
10.1002/cssc.201601396
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A nitrogen-doped vesicle-like porous carbon with well-integrated dual iron-based catalytic sites was developed through direct pyrolysis of inexpensive and abundant precursors. Benefiting from the mesoporous structures with synchronous construction of Fe-Nx and Fe/Fe3C@NC sites, the optimized catalyst exhibited outstanding performance for the oxygen reduction reaction (ORR) in alkaline media, even superior to the commercial Pt/C catalyst. Detailed characterizations revealed that Fe/Fe3C@NC sites can make major catalytic contributions in basic media, whereas the Fe-Nx sites were found to play an indispensable role for ORR in acidic media.
引用
收藏
页码：499 / 505
页数：7
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