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Tetragonal SmVO 4  nanorods were prepared by simple solvothermal route with various temperatures. An optimised SmVO 4  sample was characterised through X-ray diffraction spectrum (XRD) and Micro-Raman spectroscopy. These results confirm that high crystallinity and pure tetragonal phase of SmVO 4  can be achieved. For morphology analysis, scanning electron microscope (SEM), high resolution transmission electron microscopy (HRTEM), energy dispersive X-ray analysis (EDX) and selected area electron diffraction (SAED) techniques were performed. These results confirmed the rod shape SmVO 4  nanoparticles with no impurities. For optical properties, UV-visible spectroscopy and photoluminescence (PL) techniques were performed. A broad absorption (290 nm – 330 nm) occurred in UV-Vis spectrum leads to multiple excitations and emissions at 542.7 nm, 600.5 nm and 643.7 nm with  4 G 5/2 → 6 H 5/2  (green),  4 G 5/2 → 6 H 7/2  (orange) and  4 G 5/2 → 6 H 9/2  (red), respectively. Finally, Vibrating sample magnetometer (VSM) study showed that the prepared SmVO 4  nanoparticles possessed paramagnetic nature with high retentivity of 366.06 emu. Electrochemical performance of SV1 electrode shows pseudocapacitance nature with high specific capacitance value of 310 F/g (1 A/g) from GCD.

One step synthesis of samarium vanadate nanorods for high performance supercapacitors