Sonochemical synthesis,characterization, and electrochemical properties of MnMoO4 nanorods for supercapacitor applications |
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| Authors: | Ganesh Kumar Veerasubramani Karthikeyan Krishnamoorthy Radhakrishnan Sivaprakasam Sang Jae Kim |
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| Affiliation: | 1. Nanomaterials and System Lab, Faculty of Applied Energy System, Science and Engineering College, Jeju National University, Jeju 690-756, South Korea;2. Nanomaterials and System Lab, Department of Mechanical Engineering, Jeju National University, Jeju 690-756, South Korea;3. Department of Mechatronics Engineering, Jeju National University, Jeju 690-756, South Korea |
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| Abstract: | In this article, we reported the preparation of manganese molybdate (MnMoO4) nanorods by a facile sonochemical method and investigated its electrochemical properties for supercapacitor applications. The microstructure, surface morphology and composition were characterized by using field emission scanning electron microscope (FE-SEM), high resolution-transmission electron microscopy (HR-TEM), X-ray diffraction analysis (XRD), Raman spectroscopy and X-ray photo electron microscopy (XPS). The cyclic voltammetry (CV) curves of sonochemically synthesized α-MnMoO4 nanorods revealed the presence of redox pairs suggesting the pseudocapacitive nature of MnMoO4. A maximum specific capacitance of the α-MnMoO4 nanorods was about 168.32 F g−1 as observed from the galvanostatic charge–discharge (GCD) analysis at a constant current density of 0.5 mA cm−2. Long term cyclic stability study revealed that about 96% of initial capacitance was retained after 2000 cycles. |
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| Keywords: | Oxides Nanostructures X-ray photo-emission spectroscopy (XPS) Electrochemical properties |
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