Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 10, Issue 7, Pages 1546-1553Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201500287
Keywords
electrocatalyst; mesoporous carbon; nitrogen-doping; oxygen reduction reaction; soft-templating
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Funding
- Australian Research Council (ARC) [DP1095861, DP130104459]
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The development of ordered mesoporous carbon materials with controllable structures and improved physicochemical properties by doping heteroatoms such as nitrogen into the carbon framework has attracted a lot of attention, especially in relation to energy storage and conversion. Herein, a series of nitrogen-doped mesoporous carbon spheres (NMCs) was synthesized via a facile dual soft-templating procedure by tuning the nitrogen content and carbonization temperature. Various physical and (electro)chemical properties of the NMCs have been comprehensively investigated to pave the way for a feasible design of nitrogen-containing porous carbon materials. The optimized sample showed a favorable electrocatalytic activity as evidenced by a high kinetic current and positive onset potential for oxygen reduction reaction (ORR) due to its large surface area, high pore volume, good conductivity, and high nitrogen content, which make it a highly efficient ORR metal-free catalyst in alkaline solutions.
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