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- W2360889722 abstract "Using MnSO4 and K2S2O8 as reactants,MnO2 was synthesized using fluid phase method and assembled to the electrochemical capacitor electrode.XRD and SEM were used to investigate its structure and morphology,and galvanostastic charge-discharge,A.C.impendence,cyclic voltammetry were used to study the electrochemical performance of the as-prepared electrochemical capacitor.The results show that the product is pure nanostructure α-MnO2,assembled by plenty of nano-robs.The charge-discharge curves bend obviously,resulting from the redox reactions in 0.53 V and 0.33 V(vs.Hg/HgO) respectively,which is helpful to enhance the capacity.In the range of 10-3-104 Hz,charge saturation occurs below 0.2 Hz,showing that most capacitance in the electrode material can be made good use of,and the available power is 48.3 J/g.The rate capability of the electrode is favorable,with the characteristic response time 12.5 s.The electrode process is determined by the block-layer diffusion at low frequency,with a specific capacitance as high as 151 F/g.However,the capacity drops quickly along with the increase of frequency.Below 100 Hz,the capacitance approximates to 0." @default.
- W2360889722 created "2016-06-24" @default.
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- W2360889722 date "2008-01-01" @default.
- W2360889722 modified "2023-09-28" @default.
- W2360889722 title "Electrochemical-capacity of nanostructure manganese dioxide" @default.
- W2360889722 hasPublicationYear "2008" @default.
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