LaCoO3 doped on the lanthanum site (e.g. strontium100)
or cobalt site (e.g. nickel101,102 or rhodium103) or both sites
(strontium and rhodium104) has been reported as a thermoelectric
material, but the figures of merit at high temperatures are
relatively low (∼0.01–0.1).Similarly, doped LaCuO4 materials
have good thermoelectric properties at low temperatures but
low figures of merit at high temperatures.105 CuAlO2 doped
with magnesium,106 silver107 or silver and zinc107 have been
investigated, but the figures are also small (∼0.03–0.14).