Title of article :
Proton-conducting properties of hydrated tin dioxide as an electrolyte for fuel cells at intermediate temperature
Author/Authors :
Hara، نويسنده , , Shinji and Sakamoto، نويسنده , , Hiroaki and Miyayama، نويسنده , , Masaru and Kudo، نويسنده , , Tetsuichi، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2002
Pages :
7
From page :
679
To page :
685
Abstract :
Proton conductivity of hydrated tin dioxide (SnO2·nH2O) was investigated at 100–150 °C under water vapor pressure up to 0.5MPa, and was compared with that of hydrated zirconia (ZrO2·nH2O). High proton conductivities above 10−2 S cm−1 were observed in both hydrates at 150 °C under high water vapor pressures. The conductivity decreased with a decrease in water vapor pressure at 130–150 °C, but the decrease of conductivity in SnO2·nH2O was smaller than that in ZrO2·nH2O. The SnO2·nH2O showed a good recovering property of conductivity after drying at 150 °C, which was not observed for ZrO2·nH2O, suggesting the SnO2·nH2O to be suitable as proton-conductive electrolyte for use at intermediate temperature. Films of SnO2·nH2O/polymer composites were prepared, and a high conductivity was observed in SnO2·nH2O/R-epoxy resin.
Keywords :
Hydrated tin dioxide , Composite , High proton conductivity , Fuel cell , Intermediate temperature
Journal title :
Solid State Ionics
Serial Year :
2002
Journal title :
Solid State Ionics
Record number :
1709330
Link To Document :
بازگشت