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| Home > Publications database > Preparation, sintering, and water incorporation of proton conducting Ba0.99Zr0.8Y0.2O3-delta: comparison between three different synthesis techniques |
| Home > Publications database > Preparation, sintering, and water incorporation of proton conducting Ba0.99Zr0.8Y0.2O3-delta: comparison between three different synthesis techniques |
| Journal Article | PreJuSER-44541 |
;
2004
Elsevier Science
Amsterdam [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.ssi.2004.03.045
Abstract: Three wet chemistry routes were used to synthesize Ba0.99Zr0.8Y0.2O3-delta (BZY20) and to avoid the drawbacks of the conventional mixed oxide route used for its preparation. Pure samples were prepared using the Matrix Trapping and Decomposition (MTD) and Polyacrylamide Gel (PG) processes. The compound as a powder is thermodynamically stable up to 1250 degreesC while the purity of the bulk of a pellet can be maintained up to 1500 degreesC. An expected increase of the lattice parameter (from 0.4193 (BaZrO3) to 0.4228 (1) nm (BZY20)) was observed confirming the dissolution of yttrium in the barium zirconate structure. BZY20 absorbs large amounts of water vapor (H/Ba approximate to 0.19) and pellets can be sintered up to 95% at 1500 degreesC for 10 h. (C) 2004 Elsevier B.V. All rights reserved.
Keyword(s): J ; proton conductor (auto) ; yttrium-doped barium zirconate (auto) ; wet chemistry route (auto) ; polyacrylamide gel (auto) ; matrix trapping and decomposition (auto)
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