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), & Qiao, Shi Zhang (2011) Nanoporous Graphitic-C3N4@Carbon Metal-Free Electrocatalysts for Highly Efficient Oxygen Reduction. Journal of the American Chemical Society, 133(50), pp. 20116-20119.

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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.

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ID Code: 58934
Item Type: Journal Article
Refereed: Yes
DOI: 10.1021/ja209206c
ISSN: 1520-5126
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
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Deposited On: 11 Apr 2013 07:32
Last Modified: 10 May 2013 05:26

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