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Title: An International Round-Robin Study, Part II: Thermal Diffusivity, Specific Heat and Thermal Conductivity

Abstract

For bulk thermoelectrics, figure-of-merit, ZT, still needs to improve from the current value of 1.0 - 1.5 to above 2 to be competitive to other alternative technologies. In recent years, the most significant improvements in ZT were mainly due to successful reduction of thermal conductivity. However, thermal conductivity cannot be measured directly at high temperatures. The combined measurements of thermal diffusivity and specific heat and density are required. It has been shown that thermal conductivity is the property with the greatest uncertainty and has a direct influence on the accuracy of the figure of merit. The International Energy Agency (IEA) group under the implementing agreement for Advanced Materials for Transportation (AMT) has conducted two international round-robins since 2009. This paper is Part II of the international round-robin testing of transport properties of bulk bismuth telluride. The main focuses in Part II are on thermal diffusivity, specific heat and thermal conductivity.

Authors:
 [1];  [1];  [2];  [2];  [3];  [3];  [4];  [5];  [5];  [5];  [6];  [7];  [7];  [8];  [9];  [10]
  1. ORNL
  2. Fraunhofer-Institute, Freiburg, Germany
  3. Chinese Academy of Sciences
  4. Clemson University
  5. Corning, Inc
  6. ZT-Plus
  7. Marlow Industries, Inc
  8. CANMET - Materials Technology Laboratory, Natural Resources of Canada
  9. University of Waterloo, Canada
  10. University of Quebec at Chicoutimi
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Temperature Materials Laboratory
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1090475
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of Electronic Materials
Additional Journal Information:
Journal Volume: 42; Journal Issue: 6; Journal ID: ISSN 0361--5235
Country of Publication:
United States
Language:
English
Subject:
thermal diffusivity; specific heat; thermal conductivity; thermoelectric

Citation Formats

Wang, Hsin, Porter, Wallace D, Bottner, Harold, Konig, Jan, Chen, Lidong, Bai, Shengqiang, Tritt, Terry M., Mayolett, Alex, Senawiratne, Jayantha, Smith, Charlene, Harris, Fred, Gilbert, Partricia, Sharp, J, Lo, Jason, Keinke, Holger, and Kiss, Laszlo I. An International Round-Robin Study, Part II: Thermal Diffusivity, Specific Heat and Thermal Conductivity. United States: N. p., 2013. Web. doi:10.1007/s11664-013-2516-0.
Wang, Hsin, Porter, Wallace D, Bottner, Harold, Konig, Jan, Chen, Lidong, Bai, Shengqiang, Tritt, Terry M., Mayolett, Alex, Senawiratne, Jayantha, Smith, Charlene, Harris, Fred, Gilbert, Partricia, Sharp, J, Lo, Jason, Keinke, Holger, & Kiss, Laszlo I. An International Round-Robin Study, Part II: Thermal Diffusivity, Specific Heat and Thermal Conductivity. United States. doi:10.1007/s11664-013-2516-0.
Wang, Hsin, Porter, Wallace D, Bottner, Harold, Konig, Jan, Chen, Lidong, Bai, Shengqiang, Tritt, Terry M., Mayolett, Alex, Senawiratne, Jayantha, Smith, Charlene, Harris, Fred, Gilbert, Partricia, Sharp, J, Lo, Jason, Keinke, Holger, and Kiss, Laszlo I. Tue . "An International Round-Robin Study, Part II: Thermal Diffusivity, Specific Heat and Thermal Conductivity". United States. doi:10.1007/s11664-013-2516-0.
@article{osti_1090475,
title = {An International Round-Robin Study, Part II: Thermal Diffusivity, Specific Heat and Thermal Conductivity},
author = {Wang, Hsin and Porter, Wallace D and Bottner, Harold and Konig, Jan and Chen, Lidong and Bai, Shengqiang and Tritt, Terry M. and Mayolett, Alex and Senawiratne, Jayantha and Smith, Charlene and Harris, Fred and Gilbert, Partricia and Sharp, J and Lo, Jason and Keinke, Holger and Kiss, Laszlo I.},
abstractNote = {For bulk thermoelectrics, figure-of-merit, ZT, still needs to improve from the current value of 1.0 - 1.5 to above 2 to be competitive to other alternative technologies. In recent years, the most significant improvements in ZT were mainly due to successful reduction of thermal conductivity. However, thermal conductivity cannot be measured directly at high temperatures. The combined measurements of thermal diffusivity and specific heat and density are required. It has been shown that thermal conductivity is the property with the greatest uncertainty and has a direct influence on the accuracy of the figure of merit. The International Energy Agency (IEA) group under the implementing agreement for Advanced Materials for Transportation (AMT) has conducted two international round-robins since 2009. This paper is Part II of the international round-robin testing of transport properties of bulk bismuth telluride. The main focuses in Part II are on thermal diffusivity, specific heat and thermal conductivity.},
doi = {10.1007/s11664-013-2516-0},
journal = {Journal of Electronic Materials},
issn = {0361--5235},
number = 6,
volume = 42,
place = {United States},
year = {2013},
month = {1}
}