Study on the effect of substrate on the electrochemical performance of CoS material
Zhang Jianqiang1, Zhang Yun1,2, Li Xiaocheng2
1.School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050; 2.Laboratory of Clean Energy Chemistry and Materials,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000
Abstract: CoS materials were prepared via electrodeposition using CoCl2·6H2O as cobalt source and CS(NH2)2 as sulfide source.Nickel foam (NF) and 3D graphene/nickel foam (3D GE/NF) were used as substrates,respectively.3D CoS/GE/NF and CoS/NF electrodes were obtained.The effect of NF and 3D GE/NF substrate on the electrochemical performance of CoS was investigated.The results indicated that 3D GE/NF substrate could promote the charge transfer between electrode and electrolyte due to the existence of high-quality and high-conductivity graphene.At current density of 1A/g,the specific capacitance of 3D CoS/GE/NF was 2320F/g which was higher than that of CoS/NF (1269F/g).Even at current density of 20A/g,the specific capacitance was still 1638F/g.The specific capacitance of 3D CoS/GE/NF would remain as 73.44% after 500 cycles at high current density of 10A/g.This value was much higher than that of CoS/NF electrode was 44.69%.
张建强, 张韵, 李小成. 基底对CoS电极材料电化学性能的影响研究[J]. 化工新型材料, 2018, 46(4): 122-125.
Zhang Jianqiang, Zhang Yun, Li Xiaocheng. Study on the effect of substrate on the electrochemical performance of CoS material. New Chemical Materials, 2018, 46(4): 122-125.
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