Preparation, characterization and thermoelectricity of ATT/TiO2/PANI nano-composites doped with different acids

ATT/TiO2/PANI (ATOP) nano-composites were synthesized by in situ polymerization under different doping-acids (HCl, sulfosalicylic acid (SSA), HCl + SSA dual acids, HClO4) in the presence of ATT/TiO2 nano-particles. The effects of various doping-acids on the microstructure, morphology, thermal stability and thermoelectric properties were also discussed. The results show that the ATOP nano-composites doped with HCl + SSA dual acids present a better thermoelectric properties, combined with high electrical conductivity, Seebeck coefficient, and low thermal conductivity. A higher value of ZT is kept in the range of 323–373 K for the HCl + SSA dual acids doped ATOP nano-composites. The results indicate that the HCl + SSA dual acids doped ATOP nano-composites can be available for power generation with low temperature heat, e.g. exhaust gas, terrestrial heat, solar energy, etc.