Enhancing Electrocatalytic Oxygen Reduction on Nitrogen-Doped Graphene by Active Sites Implantation

被引：101

作者：

Feng, Leiyu ^{[1
]}

Yang, Lanqin ^{[1
]}

Huang, Zujing ^{[1
]}

Luo, Jingyang ^{[1
]}

Li, Mu ^{[1
]}

Wang, Dongbo ^{[1
]}

Chen, Yinguang ^{[1
]}

机构：

[1] Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

METAL-FREE ELECTROCATALYSTS; CARBON; CATALYSTS; CATHODE; NANOSHEETS; CHALLENGES;

D O I：

10.1038/srep03306

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The shortage of nitrogen active sites and relatively low nitrogen content result in unsatisfying eletrocatalytic activity and durability of nitrogen-doped graphene (NG) for oxygen reduction reaction (ORR). Here we report a novel approach to substantially enhance electrocatalytic oxygen reduction on NG electrode by the implantation of nitrogen active sites with mesoporous graphitic carbon nitride (mpg-C3N4). Electrochemical characterization revealed that in neutral electrolyte the resulting NG (I-NG) exhibited super electrocatalytic activity (completely 100% of four-electron ORR pathway) and durability (nearly no activity change after 100000 potential cyclings). When I-NG was used as cathode catalyst in microbial fuel cells (MFCs), power density and its drop percentage were also much better than the NG and Pt/C ones, demonstrating that the current I-NG was a perfect alternative to Pt/C and offered a new potential for constructing high-performance and less expensive cathode which is crucial for large-scale application of MFC technology.

引用

页数：8

共 44 条

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