fig4
Figure 4. (A) Proton conductivity of Zn-MOF containing membranes [effect of temperature (left) and filler content (right)]. Reprinted with permission from[49]. (B) PEM with HPW/COF (P-COF). Synthesis procedure, structure, and proton transport in P-COF (left). Proton conductivities at various relative humidity. Reprinted with permission from[52]. (C) Proton conductivity of PPy@ZIF-67/SPI nanofiber composites membrane and possible proton transport. Reprinted with permission from[54].
