Improvement of the electrochemical behavior of polymer electrolyte using covalent organic frameworks nanofiller

Researchers seek to improve the mechanical and electrochemical properties of flexible batteries,supercapacitors, etc. In the field of flexible batteries, they are looking to replace liquid electrolytes with solid polymerelectrolytes (SPE) to increase the safety of batteries. Due to the wide range of studies, poly(vinylidene fluoride-cohexafluoropropylene)PVDF-HFP is considered to be an acceptable polymer matrix in terms of electrochemicalstability and excellent flexibility. In the present study, the electrochemical behavior of the SPE has been investigated for۴۵ days. By adding covalent organic framework (COF) nanofillers into the SPE, the electrochemical behavior of SPEhas been considered. Adding different percentages of COFs into the SPE shows a shorter duration of stabilization ofthe polymer matrix compared to the initial state (rejuvenating). Moreover, the results show an improvement of the ionconductivity (around ۲.۲۱e-۴ S/cm) and enhancing the electrochemical performance of the SPE inside a flexible battery.

کلیدواژه ها:

Rejuvenating ، Anti-aging ، Polymer electrolyte ، Nanofillers ، Covalent organic frameworks