Synergistic Effects between Atomically Dispersed Fe-N-C and C-S-C for the Oxygen Reduction Reaction in Acidic Media

被引：475

作者：

Shen, Hangjia ^{[1
,4
]}

Gracia-Espino, Eduardo ^{[3
]}

Ma, Jingyuan ^{[5
]}

Zang, Ketao ^{[6
]}

Luo, Jun ^{[6
]}

Wang, Le ^{[1
,4
]}

Gao, Sanshuang ^{[1
]}

Mamat, Xamxikamar ^{[1
]}

Hu, Guangzhi ^{[1
,3
]}

Wagberg, Thomas ^{[3
]}

Guo, Shaojun ^{[2
]}

机构：

[1] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, State Key Lab Basis Xinjiang Indigenous Med Plant, Key Lab Chem Plant Resources Arid Reg, Urumqi 830011, Peoples R China

[2] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

[3] Umea Univ, Dept Phys, S-90187 Umea, Sweden

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[5] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[6] Tianjin Univ Technol, Ctr Electron Microscopy, Inst New Energy Mat & Low Carbon Technol, Tianjin Key Lab Adv Funct Porous Mat,Sch Mat, Tianjin 300384, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 44期

基金：

中国国家自然科学基金;

关键词：

doping; iron; oxygen reduction reaction; sulfur; synergistic effects; MESOPOROUS CARBON; DOPED GRAPHENE; FREE CATALYSTS; ELECTROCATALYSTS; IDENTIFICATION; NANOPARTICLES; PERFORMANCE; INSIGHTS; SBA-15; SITES;

D O I：

10.1002/anie.201706602

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Various advanced catalysts based on sulfur-doped Fe/N/C materials have recently been designed for the oxygen reduction reaction (ORR); however, the enhanced activity is still controversial and usually attributed to differences in the surface area, improved conductivity, or uncertain synergistic effects. Herein, a sulfur-doped Fe/N/C catalyst (denoted as Fe/SNC) was obtained by a template-sacrificing method. The incorporated sulfur gives a thiophene-like structure (C-S-C), reduces the electron localization around the Fe centers, improves the interaction with oxygenated species, and therefore facilitates the complete 4e(-) ORR in acidic solution. Owing to these synergistic effects, the Fe/SNC catalyst exhibits much better ORR activity than the sulfur-free variant (Fe/NC) in 0.5m H2SO4.

引用

页码：13800 / 13804

页数：5

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