Hostname: page-component-84b7d79bbc-2l2gl Total loading time: 0 Render date: 2024-07-29T22:43:36.934Z Has data issue: false hasContentIssue false
  • English
  • Français

Stability and Thermoelectric Property of Cu9Fe9S16: Sulfide Mineral as a Promising Thermoelectric Material

Published online by Cambridge University Press:  30 July 2014

Naohito Tsujii  and
Takao Mori
Naohito Tsujii
Affiliation:
National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Ibaraki, Japan,
Takao Mori
Affiliation:
International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Ibaraki, Japan.
Get access

Abstract

Thermoelectric materials based on non-toxic and earth-abundant elements are important from the viewpoint of energy harvesting from the widely-spread waste heat. We have investigated the thermoelectric properties of Cu9Fe9S16, known as the natural mineral mooihoekite or talnakhite. Seebeck coefficient shows a large negative value of about -140 μV/K around room temperature. Thermal conductivity is found to be as small as 2.0 W/Km above 100 K, which is attributed to the large unit cell and the complicated crystal structure. Our results indicate that Cu9Fe9S16 can make a high-performance and environmentally-friendly thermoelectric material if the concentration of carriers, especially holes, is reduced.

Keywords

thermoelectricenvironmentally benignelectronic material
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1680: Symposium P – Mechanics of Energy Storage and Conversion—Batteries, Thermoelectrics and Fuel Cells , 2014 , mrss14-1680-p06-08
Copyright
Copyright © Materials Research Society 2014 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Thermoelectric Nanomaterials, Materials Design and Application, ed. K. Koumoto and T. Mori, (Springer, Heidelberg, 2013).Google Scholar
Tsujii, N., J. Elec. Mater. 42, 1974 (2013).CrossRefGoogle Scholar
Tsujii, N. and Mori, T., Appl. Phys. Exp. 6, 043001 (2013).CrossRefGoogle Scholar
Hall, S. R. and Rowland, J. F., Acta Cryst. B29, 2365 (1973).CrossRefGoogle Scholar
Hall, S. R. and Gabe, E. J., Amer. Mineral. 57, 368 (1972).Google Scholar
Toberer, E. S., May, A. F., and Snyder, G. J., Chem. Mater. 22, 624 (2010).CrossRefGoogle Scholar
Snyder, G. J. and Toberer, E. S., Nature Mater. 7, 105 (2008).CrossRefGoogle Scholar
Fleischer, M., Amer. Mineral. 55, 2135 (1970).Google Scholar