1H-1,2,4-triazole:: An effective solvent for proton-conducting electrolytes

The electrochemical stability of 1H-1,2,4-Triazole and its proton conductivity, were analyzed. This compound has a similar molecular structure as that of imidazole and therefore may conduct protons via a similar mechanism as imidazole. It is an ideal solvent used to promote proton conductivity of materials at temperatures above 100 °C. The mixture of 1H-1,2,4-Triazole and 4-dodecylbenzenesulfonic acid (C 12PhSO 3H) were made by co-solving them in ethanol and then evaporated the solvent in a vacuum at 80°C. The results show that grafting of 1H-1,2,4-triazole onto the hybrid inorganic-organic polymer network enhanced the proton conductivity of the membranes doped with H 3PO 4.