Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells

(YCa)(TiMn)O(3–δ) ceramics prepared using a reaction-sintering process were investigated. Without any calcination involved, the mixture of raw materials was pressed and sintered directly. Y(2)Ti(2)O(7) instead of YTiO(3) formed when a mixture of Y(2)O(3) and TiO(2) with Y/Ti ratio 1/1 were sintered...

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Autores principales: Liou, Yi-Cheng, Tsai, Wen-Chou, Yen, Hao-Hsuan, Chang, Yung-Chia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455642/
https://www.ncbi.nlm.nih.gov/pubmed/28793436
http://dx.doi.org/10.3390/ma8074239
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author Liou, Yi-Cheng
Tsai, Wen-Chou
Yen, Hao-Hsuan
Chang, Yung-Chia
author_facet Liou, Yi-Cheng
Tsai, Wen-Chou
Yen, Hao-Hsuan
Chang, Yung-Chia
author_sort Liou, Yi-Cheng
collection PubMed
description (YCa)(TiMn)O(3–δ) ceramics prepared using a reaction-sintering process were investigated. Without any calcination involved, the mixture of raw materials was pressed and sintered directly. Y(2)Ti(2)O(7) instead of YTiO(3) formed when a mixture of Y(2)O(3) and TiO(2) with Y/Ti ratio 1/1 were sintered in air. Y(2)Ti(2)O(7), YTiO(2.085) and some unknown phases were detected in Y(0.6)Ca(0.4)Ti(0.6)Mn(0.4)O(3–δ). Monophasic Y(0.6)Ca(0.4)Ti(0.4)Mn(0.6)O(3–δ) ceramics were obtained after 1400–1500 °C sintering. Dense Y(0.6)Ca(0.4)Ti(0.4)Mn(0.6)O(3–δ) with a density 4.69 g/cm(3) was observed after 1500 °C/4 h sintering. Log σ for Y(0.6)Ca(0.4)Ti(0.6)Mn(0.4)O(3–δ) increased from –3.73 Scm(–1) at 350 °C to –2.14 Scm(–1) at 700 °C. Log σ for Y(0.6)Ca(0.4)Ti(0.4)Mn(0.6)O(3–δ) increased from –2.1 Scm(–1) at 350 °C to –1.36 Scm(–1) at 700 °C. Increasing Mn content decreased activation energy E(a) and increased electrical conductivity. Reaction-sintering process is proved to be a simple and effective method to obtain (YCa)(TiMn)O(3–δ) ceramics for interconnects in solid oxide fuel cells.
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spelling pubmed-54556422017-07-28 Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells Liou, Yi-Cheng Tsai, Wen-Chou Yen, Hao-Hsuan Chang, Yung-Chia Materials (Basel) Article (YCa)(TiMn)O(3–δ) ceramics prepared using a reaction-sintering process were investigated. Without any calcination involved, the mixture of raw materials was pressed and sintered directly. Y(2)Ti(2)O(7) instead of YTiO(3) formed when a mixture of Y(2)O(3) and TiO(2) with Y/Ti ratio 1/1 were sintered in air. Y(2)Ti(2)O(7), YTiO(2.085) and some unknown phases were detected in Y(0.6)Ca(0.4)Ti(0.6)Mn(0.4)O(3–δ). Monophasic Y(0.6)Ca(0.4)Ti(0.4)Mn(0.6)O(3–δ) ceramics were obtained after 1400–1500 °C sintering. Dense Y(0.6)Ca(0.4)Ti(0.4)Mn(0.6)O(3–δ) with a density 4.69 g/cm(3) was observed after 1500 °C/4 h sintering. Log σ for Y(0.6)Ca(0.4)Ti(0.6)Mn(0.4)O(3–δ) increased from –3.73 Scm(–1) at 350 °C to –2.14 Scm(–1) at 700 °C. Log σ for Y(0.6)Ca(0.4)Ti(0.4)Mn(0.6)O(3–δ) increased from –2.1 Scm(–1) at 350 °C to –1.36 Scm(–1) at 700 °C. Increasing Mn content decreased activation energy E(a) and increased electrical conductivity. Reaction-sintering process is proved to be a simple and effective method to obtain (YCa)(TiMn)O(3–δ) ceramics for interconnects in solid oxide fuel cells. MDPI 2015-07-10 /pmc/articles/PMC5455642/ /pubmed/28793436 http://dx.doi.org/10.3390/ma8074239 Text en © 2015 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liou, Yi-Cheng
Tsai, Wen-Chou
Yen, Hao-Hsuan
Chang, Yung-Chia
Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells
title Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells
title_full Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells
title_fullStr Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells
title_full_unstemmed Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells
title_short Preparation and Properties of (YCa)(TiMn)O(3−δ) Ceramics Interconnect of Solid Oxide Fuel Cells
title_sort preparation and properties of (yca)(timn)o(3−δ) ceramics interconnect of solid oxide fuel cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455642/
https://www.ncbi.nlm.nih.gov/pubmed/28793436
http://dx.doi.org/10.3390/ma8074239
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AT tsaiwenchou preparationandpropertiesofycatimno3dceramicsinterconnectofsolidoxidefuelcells
AT yenhaohsuan preparationandpropertiesofycatimno3dceramicsinterconnectofsolidoxidefuelcells
AT changyungchia preparationandpropertiesofycatimno3dceramicsinterconnectofsolidoxidefuelcells

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