Surfactant effect on energy storage performance of hydrothermally synthesized NiVO.

We report a study to improve the ternary oxide NiVO's electrochemical energy storage capabilities through correct surfactanization during hydrothermal synthesis. In this study, NiVOnanomaterials were synthesized in three different forms: one with a cationic surfactant (CTAB), one with an anionic surfactant (SLS), and one without any surfactant. FESEM study reveals that all the synthesized NiVOnanomaterials had a small stone-like morphology. The electrochemical study showed that anionic surfactant-assisted NiVO(NVSLS) had a maximum of 972 F gspecific capacitance at 1 A gcurrent density, whereas cationic surfactant-assisted NiVO(NV) had the lowest specific capacitance of 162 F g. The specific capacitance and the capacitance retention of the NV(85% after 4000 cycles) based electrode was much better than that of the NV(76% after 4000 cycles) based electrode. The improved energy storage properties of the NVelectrode are attributed to its high diffusion coefficient, high surface area, and enriched elemental nickel, as compared to the NVelectrode. All these excellent electrochemical properties of NVelectrode indicates their potential usage in asymmetric supercapacitor application.