Structural and proton conductivity study of P2O5-TiO2-SiO2 glasses
Structural and proton conductivity study of P2O5-TiO2-SiO2 glasses
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P2O5-TiO2-SiO2 玻璃的结构和质子电导率研究
DOI：
10.1016/j.jeurceramsoc.2005.04.013
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发表时间：
2006
影响因子：
5.7
通讯作者：
M. Nogami
中科院分区：
文献类型：
--
作者：
T. Uma;S. Izuhara;M. Nogami
质子传导膜的氢燃料电池应用正在开发使用溶胶-凝胶衍生的P2 O 5-TiO 2-SiO2玻璃。本文对具有可控孔径的P_2O_5-TiO_2-SiO_2玻璃进行了结构分析，玻璃的比表面积最大可达410m_2/g，平均孔径约为2.4nm。通过氮吸附-脱附测量、热测量以及FTIR光谱对其进行了表征。结构研究是基于FTIR光谱中某些特征谱带的强度和轮廓的演变。结果表明，随着玻璃中OH键强度的降低，质子在玻璃中的迁移率增大，从而提高了玻璃在低相对湿度下的质子电导率。以P_2O_5-TiO_2-SiO_2玻璃为电解质，Pt/C负载碳纸片为电极，构建了H_2/O_2燃料电池。结果表明，在30°C湿度条件下，电池的输出功率为88μW/cm 2。
Proton conducting membranes for hydrogen fuel cell applications are being developed using sol–gel-derived P2O5-TiO2-SiO2glasses. The present work is devoted to the structural analysis of P2O5-TiO2-SiO2glasses containing controlled pore sizes and the surface area of the glasses reaching a maximum 410m2/g, while the average pore diameter is about 2.4nm. They were characterized by nitrogen adsorption–desorption measurements, thermal measurement as well as FTIR spectroscopy. The structural studies were based on the evolution of the intensities and profiles of certain characteristics bands in the FTIR spectra. In order to increase proton conductivity at low relative humidity, the result suggests that the mobility of proton in the P2O5-TiO2-SiO2glasses increases with decreasing OH bonding strength. An H2/O2fuel cell was constructed using the P2O5-TiO2-SiO2glasses as electrolyte and Pt/C-loaded carbon paper sheets as electrodes. Results show that the performance of the cell is an output power of 88μW/cm2at 30°C with humidity.
溶胶-凝胶法 P_2O_5-TiO_2-SiO_2 玻璃中的质子电导率
DOI：
--
发表时间：
2004
期刊：
Solid State Ionics 166
影响因子：
--
作者：
M.Nogami;M.Suwa;T.Kasuga
通讯作者：
T.Kasuga