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Date of Publication:2020-01-01

Journal:Electronic Components & Materials

Volume:39

Issue:12

Page Number:42-47

ISSN No.:1001-2028

Key Words:"PVP; supercapacitor; electrode material; Prussian blue analogues; polyvinyl pyrrolidone (PVP); microporous structure; rate performance"

CN No.:51-1241/TN

Abstract:It is difficult for traditional methods to control the synthetic conditions of hollow nanoparticles.Here HKUST-1 hexahedral templates were used to fabricate nano-CuHCF for anode materials for supercapacitors.CuMOF was first synthesized by hydrothermal method and then treated by K3[Fe(CN) 6]to obtain CuHCF.The crystal structure and morphology of the CuMOF and CuHCF were characterized by XRD and SEM.The pore size and specific surface area of the two samples were measured by BET N2 adsorption/desorption experiment.The electrochemical properties of the CuHCF were studied by cyclic voltammetry,galvanostatic charge-discharge and EIS method.The effect of PVP on CuHCF's morphology and electrochemical properties was also investigated.The results show that in 0.5 mol/L Na_2SO_4 neutral solution the microporous CuHCF exhibits a specific capacitance of 254 F·g~(-1) at 1 A·g~(-1),which is significantly increased,and manifested excellent rate performance.

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