超级电容器
电容
无定形固体
电化学
功率密度
电极
材料科学
电流密度
降水
储能
纳米技术
化学工程
分析化学(期刊)
功率(物理)
化学
物理
热力学
色谱法
结晶学
物理化学
工程类
气象学
量子力学
作者
Xiaoyang Xu,Yahui Song,Ruinan Xue,Jingkuo Zhou,Jianping Gao,Fubao Xing
标识
DOI:10.1016/j.cej.2016.05.033
摘要
The amorphous CoMoS4 is prepared using a simple precipitation method and for the first time used as a supercapacitor material. Surprisingly, it possesses very good electrochemical behavior owing to its amorphous structure and multiple oxidation states. In a three-electrode system, the ratio capacitance of CoMoS4 sample can reach 661 F g−1 at a current density of 1 A g−1. In the actual application of CoMoS4, the CoMoS4 symmetric device shows the ratio capacitance of 142 F g−1 at 2 A g−1; the assembled CoMoS4//rGO hybrid supercapacitor also owns a high ratio capacitance of 68 F g−1 at 1 A g−1 with energy and power densities of 27.2 Wh kg−1 at 400 W kg−1 and 17 Wh kg−1 at 2400 W kg−1. Further the hybrid supercapacitor has good capacitance retention (86% after 10,000 cycles), low internal and Warburg resistances.
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