*3.2. Mixing Ratio Variation*

Considering the results, the optimized mixing ratios must be chosen following the favoured application of the battery. Here, the absolute carbon black (CB) share of the coating and the ratio of the CB and the binder polymer (CB/BP-ratio) shares were investigated as important parameters for the electrode coatings of ARZIBs. For a CB share ≤15 wt% and CB/BP-ratios ≤2, the cycling performance decreases, whereas for a CB share >15 wt% and CB/BP-ratios >2 and up to 5, the cycling performance increases, respectively, also for high current rates. Therefore, higher CB shares qualify the positive electrode for usage in highpower applications, while reduced CB shares (but high active material shares) are suitable for high-energy applications. Furthermore, in terms of an industrial production approach, the proportion of the passive materials (CB+BP) was successfully reduced to 15 wt% in total, and the BP proportion to 3 wt%, still enabling the cycling of these battery cells.

This study sheds light on the influence of the binder polymer/solvent combination on the cell performance of ARZIBs through comparing (non-)aqueous solvents, as well as on the influence of the mixing ratio by minimizing the passive material share of the positive electrode. The results of this study can be used for application-oriented cell fabrication of ARZIBs.
