Phosphorus-doped porous carbons as efficient electrocatalysts for oxygen reduction

被引：223

作者：

Wu, Jiao ^{[1
]}

Yang, Zhenrong ^{[1
]}

Li, Xiaowei ^{[2
]}

Sun, Qijun ^{[3
]}

Jin, Chao ^{[1
]}

Strasser, Peter ^{[4
]}

Yang, Ruizhi ^{[1
]}

机构：

[1] Soochow Univ, Sch Energy, Sch Phys Sci & Technol, Suzhou 215006, Jiangsu, Peoples R China

[2] Soochow Univ, Inst Chem Power Sources, Suzhou 215006, Jiangsu, Peoples R China

[3] Soochow Univ, Coll Nanosci & Technol, Suzhou 215006, Jiangsu, Peoples R China

[4] Tech Univ Berlin, Div Chem Engn, Dept Chem, Electrochem Energy Catalysis & Mat Sci Lab, D-10623 Berlin, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 34期

基金：

中国国家自然科学基金;

关键词：

METAL-FREE ELECTROCATALYSTS; CATALYTIC GRAPHITIZATION; NANOTUBE ARRAYS; O-2; REDUCTION; NITROGEN; IRON; COBALT; BORON; POLYANILINE; BINARY;

D O I：

10.1039/c3ta11849e

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：

Efficient electrocatalysts for the oxygen reduction reaction (ORR) play a critical role in the performance of fuel cells and metal-air batteries. In this study, we report a facile synthesis of phosphorus (P)-doped porous carbon as a highly active electrocatalyst for the ORR. Phosphorus-doped porous carbon was prepared by simultaneous doping and activation of carbon with phosphoric acid (H3PO4) in the presence of Co. Both phosphorus and cobalt were found to play significant roles in improving the catalytic activity of carbon for the ORR. The as-prepared phosphorus-doped porous carbon exhibited considerable catalytic activity for the ORR as evidenced by rotating ring-disk electrode studies. At the same mass loading, the Tafel slope of phosphorus-doped porous carbon electrocatalysts is comparable to that of the commercial Pt/C catalysts (20 wt% Pt on Vulcan XC-72, Johnson Matthey) with stability superior to Pt/C in alkaline solutions.

引用

页码：9889 / 9896

页数：8

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