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Open AccessArticle

Preparation and Properties of (YCa)(TiMn)O3−d Ceramics Interconnect of Solid Oxide Fuel Cells

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Department of Electronic Engineering, Kun Shan University, No.195, Kunda Rd., Yongkang Dist., Tainan City 71070, Taiwan
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Nano Technology R&D Center, Kun Shan University, No.195, Kunda Rd., Yongkang Dist., Tainan City 71070, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Teen-Hang Meen
Materials 2015, 8(7), 4239-4248; https://doi.org/10.3390/ma8074239
Received: 7 June 2015 / Revised: 26 June 2015 / Accepted: 6 July 2015 / Published: 10 July 2015
(This article belongs to the Special Issue Selected Papers from ICASI 2015)
(YCa)(TiMn)O3–d ceramics prepared using a reaction-sintering process were investigated. Without any calcination involved, the mixture of raw materials was pressed and sintered directly. Y2Ti2O7 instead of YTiO3 formed when a mixture of Y2O3 and TiO2 with Y/Ti ratio 1/1 were sintered in air. Y2Ti2O7, YTiO2.085 and some unknown phases were detected in Y0.6Ca0.4Ti0.6Mn0.4O3–d. Monophasic Y0.6Ca0.4Ti0.4Mn0.6O3–d ceramics were obtained after 1400–1500 °C sintering. Dense Y0.6Ca0.4Ti0.4Mn0.6O3–d with a density 4.69 g/cm3 was observed after 1500 °C/4 h sintering. Log σ for Y0.6Ca0.4Ti0.6Mn0.4O3–d increased from –3.73 Scm–1 at 350 °C to –2.14 Scm–1 at 700 °C. Log σ for Y0.6Ca0.4Ti0.4Mn0.6O3–d increased from –2.1 Scm–1 at 350 °C to –1.36 Scm–1 at 700 °C. Increasing Mn content decreased activation energy Ea and increased electrical conductivity. Reaction-sintering process is proved to be a simple and effective method to obtain (YCa)(TiMn)O3–d ceramics for interconnects in solid oxide fuel cells. View Full-Text
Keywords: (YCa)(TiMn)O3−d; interconnect; solid oxide fuel cells (YCa)(TiMn)O3−d; interconnect; solid oxide fuel cells
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Liou, Y.-C.; Tsai, W.-C.; Yen, H.-H.; Chang, Y.-C. Preparation and Properties of (YCa)(TiMn)O3−d Ceramics Interconnect of Solid Oxide Fuel Cells. Materials 2015, 8, 4239-4248.

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