A facile synthetic method was developed to prepare Zr-MOFs.Pseudo capacitor behavior in KOH electrolyte. Zr-MOF1 with small particle size exhibited higher supercapacitive performance.159x65mm (300 x 300 DPI)Abstract: Metal organic frameworks (MOFs) as a kind of crystalline porous materials have attracted much attention due to their high surface area and controllable porous structure. In this paper, we present a new synthesis of Zr-based MOFs with high electrochemical performance by a facile synthetic method of changing the reaction temperature and stirring condition. By varying the reaction temperatures, the different particle sizes and the degree of crystallization can be modified. This paper is focused on the electrochemical properties of Zr-based MOFs as electrode materials in supercapacitors.A maximum specific capacitance of Zr-MOF 1 obtained at 50 °C can reach up to 1144 F g -1 at a scan rate of 5 mV s -1 , which is far higher than Zr-MOF 2 ( 811 F g -1 ), Zr-MOF 3 (517 F g -1 ) and Zr-MOF 4 (207 F g -1 ), respectively. The results of electrochemical measurements show that the Zr-MOF 1 we synthesized has excellent capacitance performance and good cycling stability over 2000 cycles, which makes it a promising supercapacitor electrode material.
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