Nanoporous graphitic-C₃N₄@carbon metal-free electrocatalysts for highly efficient oxygen reduction
Date
2011
Authors
Zheng, Y.
Jiao, Y.
Chen, J.
Liu, J.
Liang, J.
Du, A.
Zhang, W.
Zhu, Z.
Smith, S.
Jaroniec, M.
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Journal article
Citation
Journal of the American Chemical Society, 2011; 133(50):20116-20119
Statement of Responsibility
Yao Zheng, Yan Jiao, Jun Chen, Jian Liu, Ji Liang, Aijun Du, Weimin Zhang, Zhonghua Zhu, Sean C. Smith, Mietek Jaroniec, Gao Qing (Max) Lu, and Shi Zhang Qiao
Conference Name
Abstract
Based on theoretical prediction, a g-C(3)N(4)@carbon metal-free oxygen reduction reaction (ORR) electrocatalyst was designed and synthesized by uniform incorporation of g-C(3)N(4) into a mesoporous carbon to enhance the electron transfer efficiency of g-C(3)N(4). The resulting g-C(3)N(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.
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© 2011 American Chemical Society