https://doi.org/10.1051/epjconf/201714013016
Effect of improved sol-gel method on composition and micro morphology of Ca3Co4O9
1 University of Science and Technology Beijing, School of mathematics and Physics, Beijing 100083, China
2 Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Beijing 100083, China
3 Chinese Academy of Sciences, Institute of Engineering Thermophysics, Beijing 100190, China
* Corresponding author: pingwu@sas.ustb.edu.cn
Published online: 30 June 2017
Ca3Co4O9 is a potential high temperature thermoelectric material. We explore the hydrothermal treatment improved sol-gel method to prepare Ca3Co4O9 thermoelectric materials. We find that this treatment can increase the thermoelectric performance of the samples compared with the conventional citric acid sol-gel method. We also find the samples prepared by the improved sol-gel method have more uniform grain distribution, better densification, and less voids. At about 1000K, compared with the conventional sol-gel method, the power factor of the samples prepared by improved sol-gel method improves about 168%.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
