Facile Synthesis of Nitrogen‐Containing Mesoporous Carbon for High‐Performance Energy Storage Applications |
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Authors: | Yunling Xu Jie Wang Zhi Chang Bing Ding Ya Wang Laifa Shen Changhuan Mi Hui Dou Prof. Xiaogang Zhang |
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Affiliation: | Jiangsu Key Laboratory of Material and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China |
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Abstract: | Porous carbon with high specific surface area (SSA), a reasonable pore size distribution, and modified surface chemistry is highly desirable for application in energy storage devices. Herein, we report the synthesis of nitrogen‐containing mesoporous carbon with high SSA (1390 m2 g?1), a suitable pore size distribution (1.5–8.1 nm), and a nitrogen content of 4.7 wt % through a facile one‐step self‐assembly process. Owing to its unique physical characteristics and nitrogen doping, this material demonstrates great promise for application in both supercapacitors and encapsulating sulfur as a superior cathode material for lithium–sulfur batteries. When deployed as a supercapacitor electrode, it exhibited a high specific capacitance of 238.4 F g?1 at 1 A g?1 and an excellent rate capability (180 F g?1, 10 A g?1). Furthermore, when an NMC/S electrode was evaluated as the cathode material for lithium–sulfur batteries, it showed a high initial discharge capacity of 1143.6 mA h g?1 at 837.5 mA g?1 and an extraordinary cycling stability with 70.3 % capacity retention after 100 cycles. |
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Keywords: | electrochemistry lithium– sulfur batteries mesoporous materials nitrogen doping supercapacitors |
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