Abstract: A kind of metal-organic frameworks（Ni-PTA MOFs）was prepared with hydrothermal reaction method using nickel nitrate hexahydrate and p-phthalic acid（PTA）as raw materials. The structure and properties of the product synthesized were characterized by X-ray diffraction technique，cyclic voltammetry method and galvanostatic charge-discharge technique. The influences of reaction temperature and molar ratio of reactants on the structure and capacitive performance of the product were investigated. The test results showed that the MOFs obtained had high specific capacitance when the reaction temperature was 180 ℃ and the molar ratio of nickel nitrate to p-phthalic acid was 1∶1，the discharge time was up to 477 s and the specific capacitance was as high as 1 403 F/g at a current density of 1 A/g. However，only 45% of the initial capacitance value was maintained after 1 000 cycles of galvanostatic charge and discharge at a current density of 10 A/g.

Key words: metal-organic frameworks, electrode materials, specific capacitance, reaction temperature, molar ratio