As a proof of concept and applicability of the novel CEMs presented here, electrodialysis experiments using a Li2SO4 synthetic leachate solution were carried out, achieving energy consumption and current efficiency performance values of up to 13.9  0.5 kWh kg -1 LiOH and 69.0  0.6% for the P(LiMTFSI-IBMA)-10% EGDMA composition. The higher crosslinking degree of the membranes containing 10% EGDMA resulted in higher current efficiencies, which was in good agreement with the higher transport number of these membranes. The LiMTFSI-based membranes showed better performance than the LiSTFSIbased membrane with the same crosslinking, which was likely due to the more homogenous distribution of the sulphonamide group and the absence of clustering due to the π-π interaction that could occur in the styrene-based functional group.