Superprotonic conducting phosphate glasses containing water
Superprotonic conducting phosphate glasses containing water
复制标题
含水超质子传导磷酸盐玻璃
DOI：
10.1016/j.jnoncrysol.2005.05.010
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
L. Hench
中科院分区：
文献类型：
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作者：
Y. Abe;M. Hayashi;T. Iwamoto;H. Sumi;L. Hench
使用H2-O2的燃料电池提供了将大气污染最小化的潜力。新开发的钡磷酸盐玻璃含有相当数量的移动的氢离子（质子）以及分子水表现出超质子导电性。新的BaO-La 2 O3-Al 2 O3-P2 O 5玻璃在200°C和25°C下分别具有10−2S/cm和10−3S/cm的高质子电导率和0.17eV的低活化能。使用这种超质子玻璃电解质的H2-O2燃料电池即使在非加湿条件下也可在25°C至200°C的温度下工作。氧化物玻璃中的质子长期以来一直被认为几乎是不动的。然而，在这里，我们表明，这些磷酸盐玻璃的超质子导体是一个很好的候选材料可行的燃料电池电解质。
Fuel cells using H2–O2offer the potential to minimize atmospheric pollution. Newly developed baria-phosphate glasses containing an appreciable amount of mobile hydrogen ions (protons) as well as molecular water exhibit super proton-conductivity. The new BaO–La2O3–Al2O3–P2O5glasses exhibit high proton conductivities of 10−2S/cm at 200°C and 10−3S/cm at 25°C with a low activation energy of 0.17eV. A H2–O2fuel cell using this superprotonic glass electrolyte is operable at temperatures from 25°C to 200°C even under non-humidified conditions. The protons in oxide glasses have been often considered for a long time to be almost immobile. However, here we show that these superprotonic conductors of phosphate glasses are a good candidate material for viable electrolytes of fuel cells.