Groupe du Prof. Dollé
Titre:
Post-treatment study on blended polymer for solid-state lithium batteries
Résumé:
The widely used Li batteries (LiBs) is the most established rechargeable energy storage device. Therefore, the development of new electrode and electrolyte materials is essential for improving battery performance. Solid polymer electrolytes (SPEs) have been presented as safer alternatives for liquid electrolytes as they tend to be non-flammable, have enough mechanical strength to resist dendrite growth, and do not leak. However, these materials tend to be less conductive than liquid electrolytes. This problem can be solved by solid-state gel polymer electrolytes (GPEs), which have lately received more attention. In fact, present a possible solution to this dilemma as they combine the ionic conductivity of liquid electrolytes with the increased safety of SPE to develop of electrolytes with high ionic conductivity and good mechanical stability. So, this project is designed with the aim of establishing of in-situ GPE from SPE which produce by dry process in order to take advantage of the easy processability of SPE and the higher ionic conductivity of GPE. Our approach consists in blending polymers by dry process and produce in situ GPE to improve other aspect of electrolyte such as cycling voltammetry, electrochemical impedance spectroscopy, and thermal gravimetric analysis.
