Proton conductivity of imidazole entrapped in microporous molecular sieves.

Imidazole embedded in molecular sieves shows remarkable and steady proton conductivity (>1 × 10-5 S cm-1 above 360 K). It can be considered to be a promising solid high proton conducting electrolyte for fuel cells. The conductivity depends on imidazole loading and mobility, which result from the pore geometry, the chemical nature of matrices and the preparation method.