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One-step electrodeposition of molybdenum nickel cobalt sulfides on Ni foam for high-performance asymmetric supercapacitors
作者:Uwamahoro Evariste, Guohua Jiang*, Bo Yu, Yongkun Liu, Pianpian Ma
关键字:electrodeposition; electronic materials; asymmetric supercapacitor; energy storage and conversion
论文来源:期刊
具体来源:Journal of Energy Storage
发表时间:2020年

Abstract: Molybdenum nickel-cobalt sulfide (MoNiCoS) microspheres have been electrodeposited on the Ni foam (MoNiCoS@NF) under different concentrations for evaluating its effect on the morphology and capacitance of the composites. The microstructure of the obtained microspheres has been investigated using XRD, SEM, TEM, and XPS. The as-obtained MoNiCoS microspheres exhibit a high specific capacitance of 1,472 F g-1 at 0.5 A g-1 along with excellent cycling stability of 98% after 5,000 cycles. An asymmetric supercapacitor device using MoNiCoS@NF as the positive electrode and AC/rGO as the negative electrode shows high specific energy of 146.8 Wh kg-1 at a specific power of 482.2 W kg-1.