A novel approach for synthesizing composite polymer electrolytes with a stereocomplex poly (methylmethacrylate) for electrochromic devices

A novel approach has been adopted for synthesizing composite polymer electrolytes with a blend of atactic poly ( methyl methacrylate) (a-PMMA) and isotactic PMMA (i-PMMA) owing to their ability to form stereocomplex structures, especially double helix like structures. Nanocomposite polymeric electrolytes based on gel polymeric electrolyte (GPE) consisting of stereocomplex PMMA, propylene carbonate ( PC) and LiClO4 has been synthesized. For the stabilization of polymer electrolytes and for good processability, fumed silica nanoparticles have been added in different proportions up to 6 wt% to GPE resulting in composite polymeric electrolytes (CPEs). Thermally stable, low volatile CPEs without the cost on electrochemical stability can thus be obtained, being promising candidates as polymeric electrolytes in many electrochemical devices in general, and in particular electrochromic windows.