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Journal of Nanomaterials
Volume 2015, Article ID 820893, 5 pages
http://dx.doi.org/10.1155/2015/820893
Research Article

Thermoelectric Transport Properties of Cu Nanoprecipitates Embedded

1Korea Institute of Ceramic Engineering and Technology, Icheon Branch, Icheon 467-843, Republic of Korea
2School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, Cheonan 330-708, Republic of Korea
3Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology, Seoul 153-801, Republic of Korea
4Department of Nano Applied Engineering, Kangwon National University, Chuncheon 200-701, Republic of Korea

Received 20 October 2014; Revised 14 February 2015; Accepted 7 March 2015

Academic Editor: Doron Yadlovker

Copyright © 2015 Eunsil Lee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We suggest a simple and scalable synthesis to prepare Cu- (Cu-BTS) nanocomposites. By precipitating Cu nanoparticle (NP) in colloidal suspension of as-exfoliated BTS, homogeneous mixtures of Cu NP and BTS nanosheet were readily achieved, and then the sintered nanocomposites were fabricated by spark plasma sintering technique using the mixed powder as a raw material. The precipitated Cu NPs in the BTS matrix effectively generated nanograin (BTS) and heterointerface (Cu/BTS) structures. The maximum of 0.90 at 400 K, which is 15% higher compared to that of pristine BTS, was obtained in 3 vol% Cu-BTS nanocomposite. The enhancement of resulted from improved power factor by carrier filtering effect due to the Cu nanoprecipitates in the BTS matrix.