Abstract Layered perovskite LaSr3Fe3O10 (LSF) shows hydration characterized by the water vapor intercalation and the orientation of hydroxide groups. This study tries to investigate whether the hydrated LSF transports proton or hydroxide ion in the intermediate temperature range of 100-300 °C. The electromotive force (EMF) of the warm-pressed LSF with intercalated H2O and OH- by using a vapor concentration cell showed negative value in the temperature range of 120-200 °C. This is an evidence that the hydrated LSF transport hydroxide ions in the temperature range. The EMF approached to zero with increases in temperatures from 150 °C up to 200 because the hydroxide ions are removed and the hole (Fe4+) concentration increased. The results suppose that greater amount of OH- in LSF improves the hydroxide ion transport.

中文翻译：

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中温范围内水合层状钙钛矿LaSrFeO(OH)∙H2O中的OH-离子传输

摘要 层状钙钛矿 LaSr3Fe3O10 (LSF) 表现出以水蒸气嵌入和羟基取向为特征的水合作用。本研究试图调查水合 LSF 是否在 100-300 °C 的中间温度范围内传输质子或氢氧根离子。使用蒸汽浓差电池热压的带有水和 OH- 的热压 LSF 的电动势 (EMF) 在 120-200 °C 的温度范围内显示为负值。这是水合 LSF 在温度范围内传输氢氧根离子的证据。随着温度从 150 °C 升高到 200 °C，EMF 接近于零，因为氢氧根离子被去除并且空穴 (Fe4+) 浓度增加。结果假设 LSF 中更大量的 OH- 改善了氢氧根离子传输。