The thermoelectric properties of [Ca2CoO3] 0.62[CoO2] textured ceramics

X. Y. Huang; Yuzuru Miyazaki; Kunio Yubuta; Y. Oide; T. Kajitani

doi:10.1109/ICT.2006.331287

The thermoelectric properties of [Ca₂CoO₃] _0.62[CoO₂] textured ceramics

X. Y. Huang, Yuzuru Miyazaki, Kunio Yubuta, Y. Oide, T. Kajitani

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Large and high-quality single crystal flakes of [Ca₂CoO ₃]_0.62[CoO₂] compound were grown from Co ₃O₄ and CaCO₃ reagents with chloride flux. Typical single crystal flake size is about 5times;5times;0.02 mm³. Obtained crystal flakes were consolidated by the spark plasma sintering (SPS) technique at 1100 K for 1 h. Grain alignment was checked by XRD and also was confirmed by SEM observations on the fractured surface. At 1000 K electrical conductivity of the textured ceramics is about 270 Scm^-1, twice as higher than that of powder sample sintered by the SPS procedure. ZT value of the textured sample reaches 0.4 at 1000 K, being 50% improvement relative to the powder-sintered sample, though thermal conductivity increases simultaneously.

本文言語	English
ホスト出版物のタイトル	Proceedings ICT'06 - 25th International Conference on Thermoelectrics
ページ	89-91
ページ数	3
DOI	https://doi.org/10.1109/ICT.2006.331287
出版ステータス	Published - 2006 12月 1
イベント	ICT'06 - 25th International Conference on Thermoelectrics - Vienna, Austria 継続期間: 2006 8月 6 → 2006 8月 10

出版物シリーズ

名前	International Conference on Thermoelectrics, ICT, Proceedings

Other

Other	ICT'06 - 25th International Conference on Thermoelectrics
国/地域	Austria
City	Vienna
Period	06/8/6 → 06/8/10

ASJC Scopus subject areas

工学（全般）

文献へのアクセス

10.1109/ICT.2006.331287

他のファイルとリンク

引用スタイル

Huang, XY, Miyazaki, Y, Yubuta, K, Oide, Y & Kajitani, T 2006, The thermoelectric properties of [Ca₂CoO₃] _0.62[CoO₂] textured ceramics. in Proceedings ICT'06 - 25th International Conference on Thermoelectrics., 4133243, International Conference on Thermoelectrics, ICT, Proceedings, pp. 89-91, ICT'06 - 25th International Conference on Thermoelectrics, Vienna, Austria, 06/8/6. https://doi.org/10.1109/ICT.2006.331287

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abstract = "Large and high-quality single crystal flakes of [Ca2CoO 3]0.62[CoO2] compound were grown from Co 3O4 and CaCO3 reagents with chloride flux. Typical single crystal flake size is about 5times;5times;0.02 mm3. Obtained crystal flakes were consolidated by the spark plasma sintering (SPS) technique at 1100 K for 1 h. Grain alignment was checked by XRD and also was confirmed by SEM observations on the fractured surface. At 1000 K electrical conductivity of the textured ceramics is about 270 Scm-1, twice as higher than that of powder sample sintered by the SPS procedure. ZT value of the textured sample reaches 0.4 at 1000 K, being 50% improvement relative to the powder-sintered sample, though thermal conductivity increases simultaneously.",

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AU - Kajitani, T.

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