Sun Lu, Liu Jinzhang, Liu Zehui, Wang Teng, Wang Hongxia, Li Yan
School of Materials Science and Engineering, Beihang University Beijing 100191 China
School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology Brisbane 4001 QLD Australia.
RSC Adv. 2018 May 30;8(36):19964-19970. doi: 10.1039/c8ra01729h.
This paper demonstrates a facile method based on vapor-solid reaction between magnesium powder and carbon disulfide vapor to produce S-doped porous carbon. The property of the as-prepared carbon is tunable by varying the synthesis temperature. The sample synthesized at 600 °C shows the highest specific surface area, suitable for supercapacitor electrodes. A high specific capacitance of 283 F g in HSO aqueous electrolyte is achieved. The best performance of porous carbon for a Li-ion battery anode is obtained at the optimal temperature of 680 °C. Owing to the well-balanced soft and hard carbon compositions in the material, this porous carbon exhibits a high reversible capacity of 1440 mA h g and excellent rate performance.
本文展示了一种基于镁粉与二硫化碳蒸汽之间的气固反应制备硫掺杂多孔碳的简便方法。通过改变合成温度可调控所制备碳材料的性能。在600°C合成的样品具有最高的比表面积，适用于超级电容器电极。在硫酸水溶液电解质中实现了283 F g的高比电容。在680°C的最佳温度下获得了多孔碳作为锂离子电池阳极的最佳性能。由于该材料中软硬碳成分的良好平衡，这种多孔碳表现出1440 mA h g的高可逆容量和优异的倍率性能。
