NH4PO3/SiO2 composite as electrolyte for intermediate temperature fuel cells
Abstract NH 4 PO 3 /SiO 2 composite based electrolyte with SiO 2 as supporting matrix was prepared. A thermogravimetric analysis was performed. Its electrochemical properties were investigated by an impedance spectroscopy within the temperature range of 100–300 °C under dry and humid atmospheres. The maximum conductivity is 6 mS cm − 1 at 300 °C under dry N 2 and 0.1 S cm − 1 at 200 °C under humid N 2 .