| Autor: |
Adimule, Vinayak, Yallur, Basappa C., Gowda, Adarsha H. J. |
| Předmět: |
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| Zdroj: |
Analytical & Bioanalytical Electrochemistry; Jan2022, Vol. 14 Issue 1, p1-17, 17p |
| Abstrakt: |
Mixed orthorhombic Srx doped α-Sb2O4 (x=2,4,8 and 10 wt. %) nanostructures (NS) were successfully synthesized by simple chemical precipitation method. Crystal structure, morphologies and microstructures of the as-synthesized Srx: α-Sb2O4 NS were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. XRD displayed that the NS were extensively crystalized and crystallite size increases with increase in the concentration of Sr2+ ions. SEM revealed spherical like morphologies and grain size varies between ~ 88 nm to 110 nm. Red shift in the optical absorptivity and increase in the optical band gap (Eg) displayed in UV-visible spectra as the Sr concentration increases in α-Sb2O4 NS. In Fourier transform infrared spectra (FT-IR), intensity of the characteristic peak Sb-OH gradually increases as Sr2+ dopant concentration increases in NS. Electrochemical performances of Srx: α-Sb2O4 (x =10 wt. %) NS exhibited specific capacitance of 890 F/g at a current density of 1 A/g in 6 M KOH solution. Srx: α-Sb2O4 NS showed cyclic retention of 88.95 %, long term cyclic stability up to 1000 cycles and excellent repeatability and reproducibility. Srx:α-Sb2O4 NS act as a promising electrode material for super capacitor and can be used in high energy storage device applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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