Li-doped nickel oxide as a thermoelectric material

Thermoelectric properties of ceramic samples of NiO doped with Li are studi ed in the temperature range of 450-1280 K, with different Li contents. The substitution of Li for Ni atoms in a cubic NiO lattice results in a high th ermoelectric power factor over a wide temperature range. Furthermore: Li su bstitution decreased the thermal conductivity resulting in an increase in t he thermoelectric figure of merit, Z = 0.75 x 10(-4) K-1 over 1000 K, sugge sting that NiO is a promising oxide-base material for high-temperature ther moelectric devices.