Remarkable High Proton Conducting P2O5-SiO2 Glass as a Fuel Cell Electrolyte Working at Sub-Zero to 120°C
Remarkable High Proton Conducting P2O5-SiO2 Glass as a Fuel Cell Electrolyte Working at Sub-Zero to 120°C
复制标题
卓越的高质子传导 P2O5-SiO2 玻璃作为燃料电池电解质，工作温度低于 0°C 至 120°C
DOI：
10.2109/jcersj.109.1274_815
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发表时间：
2001
影响因子：
1.1
通讯作者：
M. Nogami
中科院分区：
文献类型：
--
作者：
Y. Daiko;T. Akai;T. Kasuga;M. Nogami
研究了P2 O 5-SiO2玻璃在零下至120°C下的质子导电性。溶胶-凝胶法制备的玻璃为多孔玻璃，孔径小于5 nm，平均孔径为2.5nm。在100%RH下测得的电导率在120--20 ° C范围内符合阿克里尼乌斯方程，活化能为10 kJ/mol。在-20 ° C以下，吸附的水分子被冻结以增加活化能并降低质子传导率。我们可以得出结论，我们的P2 O 5-SiO2玻璃在120°C下表现出约30 mS/cm的高质子电导率，具有在零下至120°C下操作的燃料电池的电解质的潜力。
Proton conductivity of the P2O5-SiO2 glasses was investigated at sub-zero to 120°C. The glasses prepared by a sol-gel method are porous, pore diameters in which are smaller than 5nm with an average diameter of 2.5nm. The electrical conductivities, measured under 100%RH, follow the Arrhenius equation with the activation energy of 10kJ/mol in the temperature between 120 and -20°C. Below -20°C, the adsorbed-water molecules are frozen to increase the activation energy and decrease the proton conductivity. We could conclude that our P2O5-SiO2 glasses, exhibiting high protonic conductivity of-30mS/cm at 120°C, have potential for the electrolyte of the fuel cell operating at sub-zero to 120°C.