期刊
ELECTROCHIMICA ACTA
卷 95, 期 -, 页码 54-59出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.01.156
关键词
Concentration of protons; Perovskite-type oxide; Thermogravimetric analysis; Hydration energy; Conductivity
资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan [23655201]
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER)
- Japanese Ministry of Education, Culture, Sports, Science and Technology
- Grants-in-Aid for Scientific Research [23655201] Funding Source: KAKEN
The proton transport properties of La0.9M0.1YbO3-delta (M = Ba, Sr, Ca, Mg) were studied by the electrical conductivity measurement technique in the temperature range of 673-1173 K. The proton concentration was estimated by the weight changes due to the hydration reaction. The electrical conductivity and proton concentration of La0.9Ba0.1YbO3-delta were the highest in La0.9M0.1YbO3-delta. The electromotive force of a hydrogen gas concentration cell using La0.9Ba0.1YbO3-delta as the electrolyte was observed at 673-1073 K, and was in a good agreement with the theoretical values assuming that the proton transport number was unity. (c) 2013 Elsevier Ltd. All rights reserved.
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