A Novel Nafion-1,2,3-Triazole - H₃PO₄ Composite Membrane for Non-Humidity Condition and High Temperature PEMFC

Abstract

A novel Nafion -1,2,3-triazole -phosphoric acid (Na -Tri -PA) composite membrane was prepared by autoclave solution processing and used as an electrolyte membrane for PEMFC at non-humidity condition of 150 o C. Na -Tri -PA membrane was homogeneous. IR spectrum analysis showed the spectra of Nafion, 1,2,3-triazole, and phosphoric acid. The thermal stability of the Na -Tri -PA composite membrane increased with increasing amount of 1,2,3-triazole. For Nafion -10% 1,2,3-triazole -66% H 3 PO 4 composite membrane, the maximum power density of about 30 mW/cm 2 was obtained at non-humidity condition of 150 o C in the single cell performance. The electrochemical property such as EIS (electrochemical impedance spectra) and CV (cyclic voltammetry) was discussed in the single cell.

Novel concept of polymer electrolyte membranes for high-temperature fuel cells based on ETFE grafted with neutral acrylic monomers

“…Another approach is to replace water as proton conductor by a less volatile substance [32][33][34]. For example, Nafion was doped with an amphoteric acid [35].…”