Microwave-assisted synthesis and electrochemical preformance of CuCo2S4 as electrode for supercapacitors
In order to prepare conveniently high performance supercapacitor energy storage material,CuCo2S4 nanomaterial was synthesized by microwave method using copper acetate monohydrate,cobalt acetate tetrahydrate and thioacetamide as raw materials and citric acid as regulator.The morphology and crystal structure of CuCo2S4 composite were characterized by field emission scanning electron microscopy(FESEM)and X-ray diffractometry(XRD),and its electrochemical performance was investigated.The results show that the as-synthesized CuCo2S4 nanomaterial is consisted of nanoclusters with 10～20 nm in diameter and nanosheets with 400～600 nm in diameter and about 20 nm in thickness.As the electrode material of supercapacitor,the specific capacity reaches 1 710 F/g and 826 F/g when the current density is 1 A/g and 10 A/g respectively.After 2 500 cycles of constant current charge-discharge,the capacity retention rate is still as high as 96.6％,showing a high cycle structural stability.
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