The versatile membrane compositions presented here can be readily adjusted to target performance requirements, such as higher transport numbers when using LiSTFSI co-monomer. The energy consumption achieved by the novel LiTFSI-based copolymeric CEMs presented in this work put these at the forefront of membranes currently used for Li recovery (15.5 kWh kg -1 LiOH), and are up to one order of magnitude lower than some reported values (177 kWh kg -1 LiOH). These results may not be directly comparable, however, as they may be affected by the specific cell set-up and salt chemistry and concentrations, which would affect the overall energy consumption of the electrodialysis process.