Preparation and Analysis of Novel Thermoelectric Material (SrxCa1-x)3Co4O9
Year: 2014
Type: article
Abstract: Nanometer-sized (SrxCa1-x)3Co4O9powders were prepared using the sol-gel process. Two Ca-Co-O ceramic thermoelectric materials were then prepared and characterized with X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The microstructure and thermoelectric properties of the ceramic materials were studied. The experimental results showed that the crystals of (SrxCa1-x)3CO4grew into materials with high density and low pore rate under optimal Sr-doped conditions. The (SrxCa1-x)3Co4O9ceramic materials contain directional arrays with cube-shaped grains in a layered arrangement. The crystals were fully developed and the interface between layers was clear-cut. The thermoelectric properties of (SrxCa1-x)3Co4O9ceramics were greatly improved, with high Seebeck coefficient and high electrical conductivity. The Seebeck Coefficient positively correlated with the rise of temperature.
Source: Applied Mechanics and Materials
Authors: Jie Wang, Li Peng Zhang, Yan Li
Institution: Shandong University of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W2240164199