PEO-grafted TiO2 filler as Solid Polymer Electrolyte for rechargeable lithium batteries

The formation of lithium dendrites represents one of the main issues in the use of lithium anode for rechargeable batteries. To block their growth a possible solution is to increase the Young’s modulus of the electrolytes by creating hybrid ceramic-polymer systems [1]. Our approach is the realization of small polymer-chain-grafted nanoparticles (NP) as a branched structure filler which gives a better chemistry affinity with the polymer matrix and increases its mechanical resistance [2]. In particular, here we investigate PEO5K-grafted TiO2 NP as a filler for PEO4M/ LiTFSI-based Solid Polymer Electrolyte.