J. Mater. Sci. Technol.

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Thermoelectric Properties of Ca3Co4O9/Polyaniline Composites

Bin Zheng1,2), Yuanhua Lin2), Jinle Lan2), Xiaoping Yang1)   

  1. 1) State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
    2) State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua
    University, Beijing 100084, China
  • Received:2013-03-19 Revised:2013-04-28 Online:2014-04-15 Published:2014-04-22
  • Contact: Y. Lin
  • Supported by:

    National Basic Research Program of China (“973 Program”, No. 2013CB632506), the National Natural Science Foundation of China (No. 51025205), and the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20120002110006).

Abstract:

Ca3Co4O9/polyaniline bulk composites have been successfully fabricated by ball-milling and hot-pressing method. Our results indicate that the Seebeck coefficient can be increased nearly by 400% with adding 15 wt% Ca3Co4O9 to the polyaniline. The thermal conductivity changes slightly with increasing filler content. The highest figure of merit, ZT can reach 5 × 10−4 at 329 K for these bulk composites, which is almost 50 times larger than that of pure polyaniline, suggesting that the polymer-thermoelectric oxide composites are promising candidates for light-weight, low-cost and non-toxic thermoelectric applications.

Key words: Polyaniline, Ca3Co4O9, Thermoelectric, Composite