Lithium-ion-batteries are at this moment in time the state-of-the-art concept for electrochemical-energy-storage and as such are widely used. Weight and size are of great importance especially for portable devices. To tackle these challenges polymeric solid-state-electrolytes offer the possibility for minimizing the dimensions of the battery whilst offering high performance. This work shows a new way of realising solid-state-electrolytes on the basis of polyphosphazenes with ionic lithium-containing-side-groups. Based on the Poly[bis-(2-methoxyethoxy)ethoxy)phosphazene] (MEEP), polyorganophosphazenes with oligoether-side-groups and varying second side-groups were prepared. The synthesized polymeric systems were evaluated in respect of their chemical structure and thermal and electrochemical properties using NMR, DSC, TGA and EIS. Different synthetic routes were developed and evaluated considering reproducibility and practicability. It was possible to generate polyphosphazene-based-polyelektrolytes via a postfunctionalisation procedure using thiol-ene-click-chemistry. The as such synthesized polymers showed high lithiumion-conduction whilst offering mechanical stability, without the addition of lithium-salts. Furthermore, it was possible, using the developed method, to evaluate the ion conduction in respect of the ion-character, ion-concentration and the distance of the ion from the backbone.