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

页码：499 / 505

页数：7

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