Effects of In2O3 nanoparticles addition on microstructures and thermoelectric properties of Ca3Co4O9 compounds

Zhang，Lei1,3; Hong，Xing1; Chen，Zhiquan2; Xiong，Dingkang1; Bai，Jiaming3

2020

10.1016/j.ceramint.2020.04.081

CERAMICS INTERNATIONAL   影响因子和分区

0272-8842

1873-3956

The (x) InO/(1-x) CaCoO (x = 0-15 wt%) composites were prepared using the solid reaction method followed by a spark plasma sintering process. There is no reaction occurring, and the natural c-axis grain-oriented structure is observed in all samples by XRD measurements. Scanning electron microscopy and Energy dispersive spectroscopy observations indicate that the InO nanoparticles are present as the ultrafine particles/clusters secondary phase in CaCoO. Electric properties measurement shows that the electrical conductivity reduced by adding InO particles, while the seebeck coefficient is virtually unaffected, which leads to the low power factor PF value of CaCoO. Significantly, however, there is an obvious recovery in the electrical conductivity of S15 sample compared to that of S5 and S10 samples, which also results in a rise again in PF of S15. This result may be of significance for further increase InO secondary phase content (x > 15 wt%) to enhance the thermoelectric property of CaCoO.

Ca3Co4O9 compounds In2O3 nanoparticles Microstructure Thermoelectric properties

SCI ; EI

英语

其他

National Natural Science Foundation of China[11264002][11775163]

Materials Science

Materials Science, Ceramics

WOS:000537570200068

ELSEVIER SCI LTD

20201708556584

Electric conductivity ; Scanning electron microscopy ; Thermoelectricity ; Energy dispersive spectroscopy ; Microstructure ; Spark plasma sintering ; Calcium compounds ; Cobalt compounds ; Indium compounds ; Thermoelectric equipment

Thermoelectric Energy:615.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Solid State Physics:933 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85083652846

Scopus

1.School of Physical Science and Technology,Guangxi University,Nanning,530004,China
2.Hubei Nuclear Solid Physics Key Laboratory,Department of Physics,Wuhan University,Wuhan,430072,China
3.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Zhang，Lei,Hong，Xing,Chen，Zhiquan,et al. Effects of In2O3 nanoparticles addition on microstructures and thermoelectric properties of Ca3Co4O9 compounds[J]. CERAMICS INTERNATIONAL,2020,46(11):17763-17766.

Zhang，Lei,Hong，Xing,Chen，Zhiquan,Xiong，Dingkang,&Bai，Jiaming.(2020).Effects of In2O3 nanoparticles addition on microstructures and thermoelectric properties of Ca3Co4O9 compounds.CERAMICS INTERNATIONAL,46(11),17763-17766.

Zhang，Lei,et al."Effects of In2O3 nanoparticles addition on microstructures and thermoelectric properties of Ca3Co4O9 compounds".CERAMICS INTERNATIONAL 46.11(2020):17763-17766.