Ion exchange membranes are used in nearly all modern technologies, from batteries to purification systems. Ionic conductivity and selective permeability play a vital role in the characteristics and applications of these membranes. An issue that arises is with increasing ion conductivity, the selective permeability decreases. Through the incorporation of nanoparticles, conductivity increases without sacrificing selectivity. Despite this observation, few examples in literature are found utilizing this method. This work will present a synthetic approach towards a novel partially sulfonated polystyrene-grafted nanocomposites for optimum lithium ion-selective conductivity. The physical properties can be adjusted by tuning the nanoparticle graft density, the chain length and the sulfonation degree of the copolymer. The synthetic strategy, characterization, and challenges will be discussed.

Novel lithium-based platform: Improving ionic conductivity through polymer nanocomposites

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ACS Fall 2022

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