Conductivity of several perovskite-type complex oxides

LI Fushen; CHEN Daying; WANG Xindong; LI Lifen

doi:10.13374/j.issn1001-053x.2005.03.016

Volume 27 Issue 3

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LI Fushen, CHEN Daying, WANG Xindong, LI Lifen. Conductivity of several perovskite-type complex oxides[J]. Chinese Journal of Engineering, 2005, 27(3): 321-324. doi: 10.13374/j.issn1001-053x.2005.03.016

Citation:

LI Fushen, CHEN Daying, WANG Xindong, LI Lifen. Conductivity of several perovskite-type complex oxides[J]. Chinese Journal of Engineering, 2005, 27(3): 321-324. doi: 10.13374/j.issn1001-053x.2005.03.016

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Conductivity of several perovskite-type complex oxides

doi: 10.13374/j.issn1001-053x.2005.03.016

Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2004-01-18
Rev Recd Date: 2004-03-10

Available Online: 2021-08-17

Abstract

Abstract

The conductivity of several perovskite-type and similar perovskite-type oxide materials was investigated. The experimental results showed that the conductivities of La_0.8Sr_0.2MnO₃, La_0.8Sr_0.2 Ni_0.1Mn_0.9O₃, La_0.8Sr_0.2 Ce_0.1Mn_0.9O₃ and SrFe_0.5Co_0.5O₃ are approximative and all arrive at 10^-1 S·cm^-1. LaLiMnO_y and LaLi_0.5MnO_y, whose stabilities in molten carbonate are excellent, are different in conductivity. The former is more than 1 S·cm^-1, which meets the need of cathode materials of MCFC, and the latter is only 10^-2 S·cm^-1. A much higher activation energy of 0.191 eV should be the reason that the conductivity of LaLi_0.5MnO_y is lower.
- MCFC,
- cathode material,
- perovskite-type structure,
- complex oxide,
- conductivity