Abstract
Polycrystalline nanorods of Sm2NiMnO6 with monoclinic P21/n symmetry have successfully been synthesized via solvothermal process. The mesoporous nature of nanorods as confirmed by average pore diameter of 10 nm was clearly visible in transmission electron micrographs. These nanorods exhibited high specific surface area of ~48 m2/g with presence of Sm3+, Ni2+, Mn4+ ions on the surface of Sm2NiMnO6 crystallites. Further, the electrode of mesoporous Sm2NiMnO6 nanorods exhibited specific capacitance of 825.6 F/g at scan rate of 2 mV/s and ~86% retention of specific capacitance for ~1500 cycles at constant current density of 4 A/g.
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