Construction of continuous proton‐conduction channels through polyvinylimidazole nanotubes to enhance proton conductivity of polymer electrolyte membrane

Fabrication of protonated g-C3N4 nanosheets as promising proton conductive materials

Protonated g-C3N4 nanosheets were prepared by refluxing a mixture containing g-C3N4 and 95% H2SO4 at 80 °C for 1 hour. The obtained g-C3N4 nanosheets showed a similar layer structure to that of g-C3N4 and high water adsorption capacities. They also depicted superior conductivities reaching up to 1.44 × 10-2 S cm-1 at 80 °C and 98% RH, with promising features for proton conductivity materials.