Improved adhesion/cohesion in electrochromic foils

Purpose and goal

The project aimed to improve the adhesion in electrochromic foils by modifications of electrolyte and/or the electrode surfaces. Some ten modifications of electrolyte through the use of additives was evaluated and it was found that two had a positive impact on adhesion. During the last part of the project the electrochromic performance was measured for foils based on these additives and it was found that they performed better than the reference cells. Since the impact of the results exceeds those estimated prior the project the project, as a whole, is viewed as very successful.

Expected results and effects

The option to combine improved adhesion with improved electrochromic performance represent the most favourable result and it is therefore important to exploit this to a maximum. This implies that the short-term effects relates to strategic evaluation of method for verification and quantification of effect whereas the long-term effects most likely relates toa form of implementation within current production line.

Planned approach and implementation

The setup was based on the parts with expertise within the areas of electrolyte, electrode surfaces and electrochromic manufacturing techniques, where all are relevant for the success of the project. The realisation followed planning without any major deviations. The results that appeared during the project exceed those that were estimated from start. The results have further stimulated discussions within the project group on how to carry on the scientific and applied question formulation.