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Thermoelectric performance of polyparaphenylene/Li0.5Ni0.5Fe2O4 nanocomposites prepared by mechanical ball mixing

WU ZIHUA1, XIE HUAQING1,* , ZENG QINGFENG1, YIN MING1

Affiliation

  1. School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai 201209, P. R. China

Abstract

Polyparaphenylene/Li0.5Ni0.5Fe2O4 (PPP/LiNi-ferrite) nanocomposites were synthesized by mechanical ball mixing method and their thermoelectric properties were measured. With the increase of the PPP content, the electrical conductivity increase significantly. The thermal conductivity and lattice thermal conductivity of nanocomposite samples are smaller than those of pure LiNi-ferrite. Low thermal conductivity of the added PPP and the very large boundary between the conductive polymer and the oxide nanoparticles play dominant role on the thermal conductivity reduction. The figure of merit (ZT) of the PPP/LiNi-ferrite nanocomposite has been improved several orders in a wide temperature range from 300K to 800K. Fabrication of nanocomposites consisting of electrically conductive polymer and oxide nanoparticles may provide a promising way for realizing high-ZT thermoelectric performance.

Keywords

Organic-inorganic nanocomposite, Thermoelectric property polyparaphenylene, Li0.5Ni0.5Fe2O4.

Submitted at: Jan. 11, 2012
Accepted at: April 11, 2012

Citation

WU ZIHUA, XIE HUAQING, ZENG QINGFENG, YIN MING, Thermoelectric performance of polyparaphenylene/Li0.5Ni0.5Fe2O4 nanocomposites prepared by mechanical ball mixing, Journal of Optoelectronics and Advanced Materials Vol. 14, Iss. 3-4, pp. 262-266 (2012)