Decreased Thermal Conductivity of CaMnO3 by Added-CNTs
Year: 2013
Type: article
Abstract: The CaMnO3compound is synthesized by solid state reaction method. The precursor powder of calcium carbonate (CaCO3) and manganese oxide (MnO2) are mixed by ball milling then calcined at 850°C for 10 h and sintering at 1,150 °C for 36 h to obtain the calcium manganese oxide (CaMnO3) compound. The compound was doped the carbon nanotubes (CNTs) 2%, 4%, 6%, 8% and 10% by molar ratio following the calcinations and sintering process. The morphology and crystallography of the samples are analyzed by the X-ray diffraction (XRD) technique and scanning electron microscope (SEM). The Seebeck coefficient (S), electrical resistivity (ρ), thermal conductivity (κ) and dimensionless figure of merit were anlyzed. It results shown in a good thermoelectric properties after doping CNTs.
Source: Advanced materials research
Authors: Prapawan Thongsri, Tosawat Seetawan
Institution: Sakon Nakhon Rajabhat University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W2089592877