| Autor: |
Al-Gunaid, Murad Q.A., T.E, Somesh, H.M, Gayitri, Al-Ostoot, Fares Hezam, Basavarajaiah, Siddaramaiah |
| Zdroj: |
Polymer-Plastics Technology & Materials; 2020, Vol. 59 Issue 2, p215-229, 15p |
| Abstrakt: |
Solid polymeric electrolytes (SPEs) based on PVA/2wt% La2CuO4 with 5, 10 and 15 wt% of LiClO4 have been fabricated via solution intercalation technique. TEM result indicates that the size of nanoparticles (NPs) lies in the range 91–134 nm. The morphological behavior of PVA-SPEs probed by SEM; where the roughness of SPE films increased with increase in LiClO4 contents. The structural behaviors of SPEs have been elucidated by XRD, while ion-dipole interactions between components were evaluated by FTIR. The optical properties of SPEs investigated by UV-visible spectroscopy, where the outcomes showed increased refractive index from 1.74 to 2.41, whereas the band gap energy (Eg) is reduced from 5.26 to 3.32e V for PVA and PVA/2wt% La2CuO4/15wt%LiClO4, respectively. Electrical properties of the SPEs evaluated using LCR-meter at room temperature in frequency range 50 Hz–5 MHz. The ac-conductivity (σac) strongly depends on frequency and LiClO4 contents in SPEs and the maximum σac achieved is 2.82X10–5 Scm–1 for 15wt% LiClO4 doped PVA/La2CuO4 film. The current-voltage (I-V) data indicated non-ohmic behaviors at higher potential voltage region (> 6 V) and dc-conductivity (σdc) increased with increase in dosage of LiClO4 in SPEs through hopping ions mechanism. Thermal properties of the SPEs have been evaluated using DSC and TGA. The reduction in Tg of flexible SPEs with increase in LiClO4 content was observed due to amorphous portion dominates in SPEs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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