Development of Electrochromic Devices Working with Hydrophobic Lithium Electrolyte

Abstract

This manuscript report on a new lithium electrolyte, allowing the manufacturing of electrochemical systems, such as electrochromic devices, in ambient atmosphere. It is based on lithium bis-trifluoromethane sulfonimide dissolved in the following hydrophobic salt, which was first prepared by M. Grätzel et al.: 1-ethyl. 3-methyllimidazolium bis-trifluoromethane sulfonimide. We have also successfully tested the compatibility of this electrolyte with WO3 and TiO2-CeO2 films acting respectively as efficient electrochromic electrode and counter electrode for smart-window working with Li+ions.

Keywords

• Electrochromism
• hydrophobic electrolyte.