화학공학소재연구정보센터
Journal of Applied Electrochemistry, Vol.50, No.5, 609-619, 2020
Pseudocapacitive performance of Mn3O4-SnO2 hybrid nanoparticles synthesized via ultrasonication approach
This article reports on a one-pot sonochemical approach regarding the synthesis of Mn3O4-SnO2 hybrid nanocomposites. Various analytical techniques were utilized to characterize the crystallinity and morphology of the prepared nanocomposites. The functional properties of Mn3O4-SnO2 hybrid nanocomposite were evaluated using electrochemical techniques (Cyclic Voltammetry (CV), Galvanostatic charge-discharge and electrochemical impedance studies (EIS)). A supercapacitor electrode was constructed using the sonochemically synthesized Mn3O4-SnO2 hybrid nanocomposite which showed a specific capacitance (355 F g(-1)) at a current density (0.5 mA cm(-2)), and potential range (- 0.1 to + 0.9 V) in 1 M Na2SO4. About 91% specific capacitance was retained after 2000 cycles indicating its high electrochemical stability and capacitance retention. Graphic abstract A facile one-pot sonochemical approach for the synthesis of a Mn3O4-SnO2 hybrid nanocomposites showed a maximum specific capacitance (SC) of 355 F g(-1) at a current density of 0.5 mA cm(-2) in 1 M Na2SO4 in the potential range from - 0.1 to + 0.9 V and about 91% specific capacitance was retained after 2000 cycles. [GRAPHICS] .