Bayatsarmadi Bita, Zheng Yao, Jaroniec Mietek, Qiao Shi Zhang
School of Chemical Engineering, the University of Adelaide, Adelaide, SA, 5005, Australia.
Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio, 44240, USA.
Chem Asian J. 2015 Jul;10(7):1546-53. doi: 10.1002/asia.201500287. Epub 2015 May 12.
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.
通过将氮等杂原子掺杂到碳骨架中，来开发具有可控结构和改善的物理化学性质的有序介孔碳材料，已引起了广泛关注，特别是在能量存储和转换方面。在此，通过一种简便的双软模板法，通过调节氮含量和碳化温度，合成了一系列氮掺杂介孔碳球（NMCs）。对NMCs的各种物理和（电）化学性质进行了全面研究，为含氮多孔碳材料的可行设计铺平了道路。优化后的样品表现出良好的电催化活性，这体现在由于其大表面积、高孔体积、良好的导电性和高氮含量，使得氧还原反应（ORR）具有高动力学电流和正起始电位，这使其成为碱性溶液中一种高效的ORR无金属催化剂。
