Journal
JOURNAL OF ENERGY CHEMISTRY
Volume 26, Issue 1, Pages 63-71Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jechem.2016.07.005
Keywords
Ordered mesoporous carbons; Nitrogen doping; Cobalt nanoparticles; Oxygen reduction reaction
Funding
- National Natural Science Foundation of China [21405011]
- Science and Technology Development Planning of Jilin Province [20150520014JH]
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In this work, nitrogen-doped cobalt nanoparticlesinitrogen-doped plate-like ordered mesoporous carbons (N/Co/OMCs) were used as noble-metal free electrocatalysts with high catalytic efficiency. Compared with OMCs with long channel length, due to more entrances for catalytic target accessibility and a short pathway for rapid diffusion, the utilization efficiency of cobalt nanoparticles inside the plate-like OMCs with short pore length is well improved, which can take full advantage of porous structure in electrocatalysis and increase the utilization of catalysts. The active sites in N/Co/OMCs for oxygen reduction reaction (ORR) are highly exposed to oxygen molecule, which results in a high activity for ORR. By combination of the catalytic properties of nitrogen dopant, incorporation of Co nanoparticles, and structural properties of OMCs, the N/Co/plate-like OMCs are highly active noble-metal free catalysts for ORR in alkaline solution. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
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