Structure and high temperature thermoelectric properties of delafossite-type oxide CuFe1-xNixO2 (0 ≤ x ≤ 0.05)

Structure and high temperature thermoelectric properties of delafossite-type oxide CuFe1-xNixO2 (0 ≤ x ≤ 0.05)
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DOI：
10.1143/jjap.46.5226
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发表时间：
2007-08-01
期刊：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
影响因子：
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通讯作者：
Kajitani, Tsuyoshi
Kajitani, Tsuyoshi
中科院分区：
其他
文献类型：
--
作者：
Hayashi, Kei;Nozaki, Tomohiro;Kajitani, Tsuyoshi

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我们研究了氟硫铝石型氧化物CuFe1-xNixO2(0.4W/mK)的晶体结构。在1100K时，x=0.01的样品获得了最大无量纲优值系数ZT=sigma(ST)-T-2/K=0.14，高于多晶γ-Na0.7CoO2。在热循环后，组成元素没有明显的蒸发。
We have investigated crystal structure of delafossite-type oxide CuFe1-xNixO2 (0 4W/mK). The maximum dimensionless figure of merit ZT = sigma(ST)-T-2/K = 0.14 is obtained with the sample of x = 0.01 at 1100 K, being higher than that of the polycrystalline gamma-Na0.7CoO2. There is no significant evaporation of the constituent elements after the heat cycles.