Title of article
Thermoelectric properties of Ca2.95Bi0.05Co4−xFexO9+δ (0 ⩽ x ⩽ 0.15)
Author/Authors
Bhaskar، نويسنده , , Ankam and Lin، نويسنده , , Z.-R. and Liu، نويسنده , , Chia-Jyi Liu، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
5
From page
63
To page
67
Abstract
Polycrystalline samples of Ca2.95Bi0.05Co4−xFexO9+δ (x = 0.00, 0.05, 0.10, and 0.15) are prepared by conventional solid-state synthesis. The XRD results show that all the samples are single phase. The thermopower of all the samples is positive, indicating that the predominant carriers are holes over the entire temperature range. The electrical resistivity and thermopower decrease with increasing Fe content. Among all the samples, Ca2.95Bi0.05Co3.95Fe0.15O9+δ exhibits the highest dimensionless figure of merit of 0.064 at 300 K. These results suggest that the Fe is an effective doping element for improving the thermoelectric properties of Ca2.95Bi0.05Co4O9+δ.
Keywords
Sintering , thermoelectric , thermal conductivity , thermoelectric materials , X-ray diffraction
Journal title
Energy Conversion and Management
Serial Year
2013
Journal title
Energy Conversion and Management
Record number
2337113
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