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Title: Zintl compounds with high thermoelectric performance and methods of manufacture thereof

Patent ·
OSTI ID:1998293
;

Systems and methods discussed herein relate to Zintl-type thermoelectric materials, including a p-type thermoelectric material according to the formula AMyXy, and includes at least one of calcium (Ca), europium (Eu), ytterbium (Yb), and strontium (Sr), and has a ZT of the above about 0.60 above 675K. The n-type thermoelectric component includes magnesium (Mg), tellurium (Te), antimony (Sb), and bismuth (Bi) according to the formula Mg3.2Sb1.3Bi0.5-xTex that has an average ZT above 0.8 from 400K to 800K. The p-type and n-type materials discussed herein may be used alone, in combination with other materials, or in combination with each other in various configurations.

Research Organization:
Univ. of Houston, TX (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0001299; SC0010831
Assignee:
University of Houston System (Houston, TX)
Patent Number(s):
11,627,691
Application Number:
15/999,846
OSTI ID:
1998293
Resource Relation:
Patent File Date: 02/17/2017
Country of Publication:
United States
Language:
English

References (10)

Synthesis and high thermoelectric efficiency of Zintl phase YbCd2−xZnxSb2 journal March 2009
Thermoelectric Properties of Zintl Phase Compounds of Ca1−x Eu x Zn2Sb2 (0 ≤ x ≤ 1) journal December 2015
Thermoelectric Material and Device Incorporating Same patent-application August 2009
Thermoelectric Conversion Material patent-application April 2017
Valence band study of thermoelectric Zintl-phase SrZn 2 Sb 2 and YbZn 2 Sb 2 : X-ray photoelectron spectroscopy and density functional theory journal May 2010
Enhancement of thermoelectric performance of phase pure Zintl compounds Ca1−Yb Zn2Sb2, Ca1−Eu Zn2Sb2, and Eu1−Yb Zn2Sb2 by mechanical alloying and hot pressing journal July 2016
Electronic structure and transport in thermoelectric compounds AZn2Sb2 (A = Sr, Ca, Yb, Eu) journal January 2010
Thermoelectric properties of Bi-based Zintl compounds Ca 1−x Yb x Mg 2 Bi 2 journal January 2016
Zintl Phases as Thermoelectric Materials: Tuned Transport Properties of the Compounds CaxYb1-xZn2Sb2 journal November 2005
Improved thermoelectric performance in the Zintl phase compounds YbZn2−xMnxSb2 via isoelectronic substitution in the anionic framework journal July 2008

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