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.

中文翻译：

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溶剂热合成依赖于 Sm2NiMnO6 介孔纳米棒的结构、形态和电化学行为

摘要 已通过溶剂热法成功合成了具有单斜 P21/n 对称性的 Sm2NiMnO6 多晶纳米棒。通过 10 nm 的平均孔径证实的纳米棒的介孔性质在透射电子显微照片中清晰可见。这些纳米棒具有~48 m2/g 的高比表面积，Sm2NiMnO6 微晶表面存在 Sm3+、Ni2+、Mn4+ 离子。此外，介孔 Sm2NiMnO6 纳米棒电极在 2 mV/s 的扫描速率下表现出 825.6 F/g 的比电容，并且在 4 A/g 的恒定电流密度下，在约 1500 次循环中比电容保持约 86%。