DataVXJournal of Asian Ceramic SocietiesPaper
journal article·2022-04-03Open access

The effects of Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 addition on the phase, microstructure, and thermoelectric properties of Ca 3 Co 4 O 9 ceramics

Panupong Jaiban, Pimpilai Wannasut, Anucha Watcharapasorn

Journal of Asian Ceramic Societies· Volume 10· Issue 2
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Source abstract

Abstract

In this work, the influences of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) addition on phase, microstructure, and thermoelectric properties of Ca3Co4O9 (CCO) were investigated. (1-x)CCO-(x)BCZT ceramics where x= 0, 0.003, 0.005, and 0.010 were fabricated successfully via a conventional solid-state sintering at 1,223 K for 24 h. The substitution of BCZT introduced the chemical defects ([Formula: see text], [Formula: see text], [Formula: see text]) in CCO ceramic, which increased charge carrier concentration and enhanced the electrical conductivity. The presence of Ca3Co2O6 phase and Co3+ improved the Seebeck coefficients of CCO ceramic. The thermal conductivity of CCO ceramic decreased when BCZT was added. The addition of BCZT at x = 0.010 promoted the highest thermoelectric power factor (PF~235 μW/mK2), and the highest figure of merit (ZT~0.5) at 800 K, which presents this ceramic an alternative p-type oxide thermoelectric for a high-temperature thermoelectric device.
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Research context

Ceramics & glasses

OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal Expansion and Ionic Conductivity · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok, Rayong, Thailand

Research Center for Quantum Technology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand

Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand

Office of Research Administration, Chiang Mai University, Chiang Mai, Thailand

Center of Excellence in Materials Science and Technology, Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand

Funding

Program Management Unit for Human Resources & Institutional Development, Research, and Innovation · King Mongkut’s University of Technology North Bangkok · Chiang Mai University

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