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. 2024 Aug 23;15:7271. doi: 10.1038/s41467-024-51540-1

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© The Author(s) 2024

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Fig. 3 — a Schematic diagram of the four-compartment electrochemical device for ion separation. The CEMs were SPEEK membranes and the AEMs were QA-TB membranes. b Concentration profiles in the concentration chamber and (c) ion fluxes of Cl^- and CO₃^2- through the QA-TB membrane during the 1-h experiment.