Lead-free thermoelectrics

High figure of merit in p-type AgSn mSbTe m+2

Mi Kyung Han, John Androulakis, Sung Jin Kim, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Thermoelectric materials based on Pb-free compositions are of considerable current interest in environmentally friendly power-generation applications derived from waste-heat sources. Here, a new study of the thermoelectric properties of the tin-based compositions with the general formula AgSn mSbTe m+2 (m = 2, 4, 5, 7, 10, 14, 18) is presented, where the m value is used as the tuning parameter of the thermoelectric properties. The electrical conductivity, Seebeck coefficient, and thermal conductivity are measured from 300 K to 723 K and the resulting thermoelectric figure of merit is determined as a function of the SnTe/AgSbTe 2 ratio. A thermoelectric figure of merit ZT ≈1 is obtained at 710 K for m = 4, indicating that the system AgSn mSbTe m+2 holds great promise as an alternative p-type, lead-free, thermoelectric material.

Original languageEnglish
Pages (from-to)157-161
Number of pages5
JournalAdvanced Energy Materials
Volume2
Issue number1
DOIs
Publication statusPublished - Jan 2012

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Lead
Seebeck coefficient
Tin
Waste heat
Chemical analysis
Power generation
Thermal conductivity
Tuning
Electric Conductivity

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Lead-free thermoelectrics : High figure of merit in p-type AgSn mSbTe m+2. / Han, Mi Kyung; Androulakis, John; Kim, Sung Jin; Kanatzidis, Mercouri G.

In: Advanced Energy Materials, Vol. 2, No. 1, 01.2012, p. 157-161.

Research output: Contribution to journalArticle

Han, Mi Kyung ; Androulakis, John ; Kim, Sung Jin ; Kanatzidis, Mercouri G. / Lead-free thermoelectrics : High figure of merit in p-type AgSn mSbTe m+2. In: Advanced Energy Materials. 2012 ; Vol. 2, No. 1. pp. 157-161.
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