Nanoporous graphitic-C3N4@Carbon metal-free electrocatalysts for highly efficient oxygen reduction

Zheng, Yao, Jiao, Yan, Chen, Jun, Liu, Jian, Liang, Ji, Du, Aijun, Zhang, Weimin, Zhu, Zhonghua, Smith, Sean C., Jaroniec, Mietek, Lu, Gao Qing (Max) and Qiao, Shi Zhang (2011) Nanoporous graphitic-C3N4@Carbon metal-free electrocatalysts for highly efficient oxygen reduction. Journal of The American Chemical Society, 133 50: 20116-20119. doi:10.1021/ja209206c


Author Zheng, Yao
Jiao, Yan
Chen, Jun
Liu, Jian
Liang, Ji
Du, Aijun
Zhang, Weimin
Zhu, Zhonghua
Smith, Sean C.
Jaroniec, Mietek
Lu, Gao Qing (Max)
Qiao, Shi Zhang
Title Nanoporous graphitic-C3N4@Carbon metal-free electrocatalysts for highly efficient oxygen reduction
Journal name Journal of The American Chemical Society   Check publisher's open access policy
ISSN 0002-7863
1520-5126
Publication date 2011-11-14
Year available 2011
Sub-type Article (original research)
DOI 10.1021/ja209206c
Open Access Status Not yet assessed
Volume 133
Issue 50
Start page 20116
End page 20119
Total pages 4
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Subject 1503 Catalysis
1600 Chemistry
1303 Biochemistry
1505 Colloid and Surface Chemistry
Abstract Based on theoretical prediction, a g-C3N4@carbon metal-free oxygen reduction reaction (ORR) electrocatalyst was designed and synthesized by uniform incorporation of g-C3N4 into a mesoporous carbon to enhance the electron transfer efficiency of g-C3N4. The resulting g-C3N4@ carbon composite exhibited competitive catalytic activity (11.3 mA cm(-2) kinetic-limiting current density at -0.6 V) and superior methanol tolerance compared to a commercial Pt/C catalyst. Furthermore, it demonstrated significantly higher catalytic efficiency (nearly 100% of four-electron ORR process selectivity) than a Pt/C catalyst. The proposed synthesis route is facile and low-cost, providing a feasible method for the development of highly efficient electrocatalysts.
Formatted abstract
Based on theoretical prediction, a g-C 3N 4@carbon metal-free oxygen reduction reaction (ORR) electrocatalyst was designed and synthesized by uniform incorporation of g-C 3N 4 into a mesoporous carbon to enhance the electron transfer efficiency of g-C 3N 4. The resulting g-C 3N 4@carbon composite exhibited competitive catalytic activity (11.3 mA cm -2 kinetic-limiting current density at -0.6 V) and superior methanol tolerance compared to a commercial Pt/C catalyst. Furthermore, it demonstrated significantly higher catalytic efficiency (nearly 100% of four-electron ORR process selectivity) than a Pt/C catalyst. The proposed synthesis route is facile and low-cost, providing a feasible method for the development of highly efficient electrocatalysts.
Keyword Carbon composites
Catalytic efficiencies
Electron-transfer efficiency
Mesoporous carbon
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DP1095861
LE0882357
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Sat, 17 Mar 2012, 04:01:49 EST by Yao Zheng on behalf of Aust Institute for Bioengineering & Nanotechnology