Issue 41, 2017

Selectively doping pyridinic and pyrrolic nitrogen into a 3D porous carbon matrix through template-induced edge engineering: enhanced catalytic activity towards the oxygen reduction reaction

Abstract

Developing cost-effective and highly efficient oxygen reduction electrocatalysts, such as non-precious metal and metal-free catalysts, is undoubtedly crucial for the commercialization of low-temperature fuel cells. Here, edge-rich nitrogen doped porous carbon catalysts for the oxygen reduction reaction (ORR) with a high proportion of pyridinic and pyrrolic N (up to 94%) were synthesized by an in situ released CO2 activation method, using glucose and melamine as precursors and nano-CaCO3 as the template. The catalysts exhibit a three-dimensional structure, hierarchical pores and large pore volumes. Benefiting from the increased active site density and structural advantage, the optimized catalyst shows excellent ORR activity with a half-wave potential of 0.853 V and long-term stability in alkaline media, which is among the best for metal-free catalysts reported to date.

Graphical abstract: Selectively doping pyridinic and pyrrolic nitrogen into a 3D porous carbon matrix through template-induced edge engineering: enhanced catalytic activity towards the oxygen reduction reaction

Supplementary files

Article information

Article type
Paper
Submitted
29 Aug 2017
Accepted
20 Sep 2017
First published
20 Sep 2017

J. Mater. Chem. A, 2017,5, 21709-21714

Selectively doping pyridinic and pyrrolic nitrogen into a 3D porous carbon matrix through template-induced edge engineering: enhanced catalytic activity towards the oxygen reduction reaction

E. Luo, M. Xiao, J. Ge, C. Liu and W. Xing, J. Mater. Chem. A, 2017, 5, 21709 DOI: 10.1039/C7TA07608H

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