超级电容器
材料科学
沸石咪唑盐骨架
电容
热解
咪唑酯
氮气
碳纤维
功率密度
电流密度
复合材料
化学气相沉积
电容器
兴奋剂
电极
固化(化学)
化学工程
纳米技术
电压
化学
无机化学
金属有机骨架
复合数
电气工程
有机化学
光电子学
物理化学
物理
吸附
功率(物理)
量子力学
工程类
作者
Guiling Wang,Weirong Li,Xue Yang,Junnan Liu,Yipeng Yue,Chenkun Zhou,Kai Zhu,Dianxue Cao,Ye Chen,Guiling Wang
标识
DOI:10.1016/j.est.2022.104220
摘要
Using ZIF-67 as precursor, CoS/Nitrogen-doped carbon (CoS/NC) composites are successfully prepared by applying chemical vapor deposition (CVD) treatment at three different curing temperatures. The results show that the optimal curing temperature is 700 °C, and CoS/NC-700 is a hollow cage-like polyhedron structure formed by the combination of CoS nanosheets and nitrogen doped carbon skeleton. The specific capacitance is 789 F g−1 at 1 A g−1 current density and a rate capacity of 80.2% under a 20 A g−1 of current density. The CoS/NC-700//AC capacitor has the highest energy density of 32.8 Wh kg−1 when the power density is 620.0 W kg−1 and the capacitor remains 89.2% of initial capacitance after 10,000 charge-discharge cycles at current density of 5 A g−1.
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