Lanthanum-strontium cuprate: A promising cathodic material for solid oxide fuel cells |
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| Authors: | G N Mazo S N Savvin A M Abakumov J Hadermann Yu A Dobrovol’skii L S Leonova |
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| Institution: | (1) Moscow State University, Vorob’evy Gory 1, Moscow, 119992, Russia;(2) University of Antwerp, Groenenborgerlaan 172, Antwerp, B-2020, Belgium;(3) Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia |
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| Abstract: | Samples of lanthanum-strontium cuprate LaSrCuO3.61 are synthesized by a solid-phase method at 1473 K, in air. Electron diffraction patterns reveal low-intensity satellites whose position is described in the reciprocal space by the (3 + 2)-dimensional space group I4/mmm(αα0, α-α0)00mg. Using a five-layer cell LaSrCuO4-δ|YSZ|LaSrCuO4-δ|YSZ|LaCuO4-δ prepared by isostatic hot pressing, the ionic component of conductivity of LaSrCuO4-δ is determined (σ1179 K = 3.8 × 10?3 S cm?1), which is commensurate with other mixed conductors based on complex oxides of cobalt and iron. |
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| Keywords: | perovskites fuel cell cathodes oxygen-ionic conductivity |
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