Synthesis and Thermoelectric Properties of Ca3Co4O9 Prepared by a Simple Thermal Hydro-Decomposition Method

被引：25

作者：

Prasoetsopha, Natkrita ^{[2
]}

Pinitsoontorn, Supree ^{[1
]}

Amornkitbamrung, Vittaya ^{[1
]}

机构：

[1] Khon Kaen Univ, Fac Sci, Dept Phys, Khon Kaen 40002, Thailand

[2] Khon Kaen Univ, Fac Sci, Mat Sci & Nanotechnol Program, Khon Kaen 40002, Thailand

来源：

ELECTRONIC MATERIALS LETTERS | 2012年 / 8卷 / 03期

关键词：

Ca3Co4O9; thermoelectric oxide; synthesis; figure-of-merit;

D O I：

10.1007/s13391-012-1088-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermoelectric Ca3Co4O9 powders were synthesized by a simple thermal hydro-decomposition method, which is novel, simple and cost effective for preparing such materials. The stoichiometric ratio of the acetate salts was mixed in de-ionized water and heated at 1073 K to obtain a single phase of Ca3Co4O9, which was confirmed by TG-DTA, XRD and chemical analysis. The electron micrograph showed plate-like particles with a diameter of similar to 1 mu m. The hot-pressed powders show the electrical resistivity of 11.6 m Omega cm, the Seebeck coefficient of 200 mu V/K, and the thermal conductivity of 1.2 Wm(-1)K(-1) at 880 K, which corresponds to a dimensionless figure-of-merit ZT of 0.23.

引用

页码：305 / 308

页数：4

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