超级电容器
介孔材料
电容
材料科学
煅烧
碳纤维
比表面积
化学工程
电化学
纳米技术
电极
化学
催化作用
复合材料
复合数
有机化学
工程类
物理化学
作者
Jingjing Yan,Congxiu Guo,Xiang‐Yun Guo,Xili Tong
标识
DOI:10.1007/s11664-021-09358-w
摘要
Supercapacitors have the advantage of high power output, which enables their broad applications in sustainable power supply systems. However, to realize mass production and application, electrode materials with low cost, environmentally friendliness, and long cycle stability are prerequisites. Herein, using glucose and ammonia as the carbon and nitrogen source, respectively, nitrogen-doped mesoporous network-like carbon materials (NMNCs) were obtained by a facile hydrothermal and calcination coupling method. NMNC produced by heat treatment in ammonia atmosphere at 1000°C for 3 h (denoted as NMNC-1000) exhibits an extremely high nitrogen-doped specific surface area (2588.8 m2 g−1) and optimal mesoporous structure, which facilitates mass transport and exposes more active sites. Under the synergistic effect of nitrogen doping and specific surface area, the NMNC-1000 manifests superior electrochemical supercapacitive properties with a high specific capacitance of 195 F g−1 at a charge and discharge current of 0.1 A g−1 in 6 mol L−1 KOH solution as well as capacitance retention rate of 71% to the counterparts. This work provides the design of promising electrode materials for supercapacitors.
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