Investigation of Zn2+-ion-conducting polymer electrolytes incorporated with room temperature ionic liquid using Zn-V2O5-based electrodes for energy storage applications
摘要
In the present study, Zn2+-ion-conducting polymer electrolyte (PE) films were synthesized using PVDF-co-HFP, PEO, Zinc Trifluoromethanesulfonate, and addition of ionic liquid. The film exhibited high ionic conductivity (σrt ~ 3.20 × 10–4 S·cm−1) at room temperature, low activation energy (Ea ~ 0.21 eV), and a high ionic transference number (tion ~ 0.99). Electrochemical property studies including cyclic voltammetry, open circuit potential, and charge–discharge analysis were performed for the fabricated cells with the synthesized PEs, Zn and V2O5-based electrodes. The cell achieved a maximum specific capacitance of 46.43 F·g−1. X-ray Diffraction, FESEM and DSC analyses supported the observed electrical and electrochemical behavior. These results various confirm the suitability of ionic liquid-incorporated PE films for hybrid supercapacitor applications.
Graphical abstract