Application of anion exchange membrane and the effect of its properties on asymmetric membrane capacitive deionization

摘要: Abstract Membrane capacitive deionization (MCDI) usually contains both anion and cation exchange membranes (AEM, CEM) to restrict the ion desorption during charging re-adsorption discharging in (CDI). In this study, different from conventional MCDI, an asymmetric membrane (AMCDI) device packing AEM only (AMCDI-AEM) was constructed, where lab-synthesized poly (2, 6-dimethyl-1, 4-phenylene oxide). The effect of properties, such as capacity, water uptake resistance on desalination performance AMCDI-AEM systematically discussed. results indicate that with high low is beneficial for AMCDI-AEM. Furthermore, AMCDI packed a commercial (AMCDI-CEM) MCDI were also assembled stress importance application. Although charge efficiency lower than full cell (54.7 vs 95.0%) due unprotected cathode, shows comparable salt adsorption capacity (7.4 7.2 mg g−1), much better CDI (2.3 mg g−1) AMCDI-CEM (1.5 mg g−1), suggesting plays stronger role CEM membrane-assisted By using single activated carbon electrode, work provides opportunity reduce cost industrialization technology.