Article ID Journal Published Year Pages File Type
5438016 Ceramics International 2017 7 Pages PDF
Abstract

A kind of dry mixing and pressing process was introduced to prepare expanded graphite/carbon fiber cement composites (EG-CFRC). Significant effect of moisture on the thermoelectric properties of EG-CFRC was observed. The higher the moisture content is, the greater the absolute Seebeck coefficient. The maximum of absolute Seebeck coefficient 11.59 μV/°C was obtained with moisture of 14.98% at 33 °C. Simultaneously, the maximum of electrical conductivity 0.78 S cm−1 was got with moisture of 11.44%. Furthermore, the largest power factor 7.85×10−4 µW m−1 K−2 was calculated at 33 °C with moisture of 11.44%. The carrier scattering, polarization effects and high density defects interface of EG-CFRC are attributed to the enhancement of thermoelectric properties in the case of higher moisture content.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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