Abstract
A horizontal-shaped cell of a bulk oxide thermoelectric material was constructed using misfit layered Ca3Co4O9 (CCO) and perovskite CaMnO3 (CMO). The electrical power was measured based on the operating parameters. The horizontal shape can improve the efficiency of the thermoelectric cell because it reduces the heat loss through the sidewalls to the junction of the thermoelectric legs, resulting in an improved thermoelectric efficiency. The pair was connected to a series circuit to generate an open-circuit voltage (VOC) of 107.98 mV. The maximum output power (Pmax) of the thermoelectric cell was 7.1 μW at ΔT = 473 K. A significant increase in the output characteristics of the cell indicates that the bulk was effective. The horizontal-shaped cell of the bulk thermoelectric oxide exhibited promising output characteristics.
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