While the use of ceramic materials can lead to membranes with high Li-ion selectivity, their narrow and limited conduction pathways for Li-ion transport limit the total output and increase the overall energy consumption of the process. These works highlight the beneficial effect of incorporating Li-ion conduction properties within the CEMs and the improved separation efficiency obtained from the use of polymeric materials. The key metrics for developing polymeric CEMs include higher permselectivity and ionic conductivity, good chemical and thermal stability, and good mechanical strength. Interestingly, polymer electrolytes based on the bis(trifluoromethane)sulfonimide (TFSI) functional group have been recently synthesised and used in lithium-based batteries owing to their promising transport properties such as high ionic conduction in anhydrous conditions (10 -4 S cm -1 ) and high relative Li-ion transport numbers (above 0.9). These findings indicate that there is an excellent opportunity for transferring this technology to other membrane-based applications such as LiOH production by electrodialysis from Li-rich liquor. The development of efficient ion-exchange membranes tailored to the demands of LiOH production is pivotal to the success of electrodialysis in this application.