Abstract
A new approach was developed for enhancing the thermoelectric performance of In2O3(ZnO)5 ceramics. Ni coating layer on the surface of In2O3(ZnO)5 powders was prepared by chemical plating. The Ni-Coated In2O3(ZnO)5 powders was densified to composite bulk with Ni enrichment in the grain boundaries. The composite sample obtained a remarkably enhanced dimensionless thermoelectric figure of merit (ZT) of 0.39 at 973K, which is 3.6 times higher than that of a pristine In2O3(ZnO)5 sample.
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