Construction of high conductivity poly(aryl ether ketone sulfone) proton exchange membrane by incorporating zwitterion-modified MOFs

In this paper, the zwitterion ADPS was modified on UiO-66-COOH by amidation reaction, and the functional UiO-66-ADPS that was produced was added to the matrix of sulfonated poly(aryl ether ketone sulfone) (SPAEKS), and the series of composite membranes of SPAEKS-UiO-66-ADPS (abbreviated as SPAEKS-U-A-X%) were successfully prepared. The UiO-66-ADPS and the series of composite membranes were characterized and evaluated. The composite membranes created exhibit excellent electrochemical performance, as well as superior water uptake and mechanical properties. Among them, at 90 °C, the proton conductivity of SPAEKS-U-A-0.75% reached 268.31 mS cm -1 , and the power density was 1553.10 mW/cm 2 , which was much higher than that of the SPAEKS membrane (302.65 mW/cm 2 ). The results show that UiO-66-ADPS significantly improved the electrochemical performance of the PEMs.