articleJournal of the American Chemical SocietyNov 14, 2011Closed access

Nanoporous Graphitic-C 3 N 4 @Carbon Metal-Free Electrocatalysts for Highly Efficient Oxygen Reduction

YZYao ZhengYJYan JiaoJCJun ChenJLJian LiuJLJi Liang

University of Queensland · ARC Centre of Excellence for Electromaterials Science · +2 more institutions

PubMed
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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…

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1,021
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12

Topics & keywords

Topics
Keywords
  • Chemistry
  • Electrocatalyst
  • Catalysis
  • Limiting current
  • Nanoporous
  • Methanol
  • Electron transfer
  • Carbon fibers
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