Ce3+ doped CeP2O7 Ceramic Electrolyte for high temperature Proton Exchange Membrane Fuel Cell

Proton conductors capable of operating in high temperature range (over 180oC) has attracted worldwide attention. The promising inorganic membranes candidates CeP 2 O 7 and Ce 3+ doped CeP 2 O 7 were used between 160 o C and 280 o C for Proton exchange membrane fuel cell (PEMFC) in this study. The structure and phase stability were analyzed by X-ray diffraction, Fourier transform infrared (FTIR), XPS (ESCALAB250Xi) and thermogravimetric analysis (TGA), and also the microstructure morphology was analyzed by scanning electron microscopy (SEM). The CeP 2 O 7 and Ce 3+ doped CeP 2 O 7 composite membranes exhibited high proton conductivity of 0.008 S cm -1 and 0.0095S cm -1 at 200 o C, respectively. The peak power densities of Ce 3+ doped CeP 2 O 7 membrane were 23.5 mW cm -2 at 180 o C and 26.6 mW cm -2 at 200 o C, respectively.