Development of ethenetetrathiolate hybrid thermoelectric materials consisting of cellulose acetate and semiconductor nanomaterials

• Hitoshi Asano

• Naoko Sakura

• Keisuke Oshima

• Yukihide Shiraishi

• Naoki Toshima

Abstract

We investigated novel organic/inorganic hybrid thermoelectric materials prepared using several metal-polymer complexes, binders (insulating polymers), and inorganic semiconductor nanomaterials. It was found that the three-component hybrid thermoelectric materials, which consisted of nanodispersed poly(nickel 1,1,2,2-ethenetetrathiolate) (Ni-PETT), cellulose acetate (CA), and carbon nanotubes (CNTs), showed high thermoelectric performance. Ni-PETT had a large negative Seebeck coefficient of −42 µV K −1 and was an n-type semiconducting polymer complex. Ni-PETT sufficiently dispersed p-type CNTs in N -methyl-2-pyrrolidone. The charge transfer interaction between Ni-PETT and CNTs could provide a strong contact. Good films could be obtained by using CA as a binder. In addition, the electrical conductivity of the three-component hybrid films was increased by methanol treatment. The Seebeck coefficient, electrical conductivity, and power factor of Ni-PETT/CA/CNT films normalized on the basis of the CNT mass were 1.9, 5.2, and 2.8 times higher than those of the CNT sheets.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 55 (2S), 02BB02-, 2016-01-05

  IOP Publishing

Keywords

• General Physics and Astronomy
• General Engineering

Details

• CRID: 1360283696336118528
• NII Article ID: 210000146055
• DOI: 10.7567/jjap.55.02bb02
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.55.02BB02
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.55.02BB02/pdf
• Data Source:
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