Composite polymer electrolytes elaboration

The major problems associated to the use of polymer electrolytes in DSSC arise from the low ionic diffusion in a more viscous medium, low penetration of the polymer inside the nanostructured T1O2 electrode, and an increase in the interfadal charge-transfer resistance between the electrodes and the electrolyte. In order to enhance the overall conversion efficiency and the transport properties, the nature/composition of the polymer systems must be improved. Further improvements in device performance are readily achievable through optimization of the ionic conductivity. In this context, the addition of inorganic nanofillers, ionic liquids, oligomers based on EO, plasticizers and other additives has become a common route to elaborate polymer (or gel) electrolytes with improved ionic conductivity properties. 

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