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Stabilized copper selenide thermoelectric materials and methods of fabrication thereof

Patent ·
OSTI ID:1986725
;
A thermoelectric composition is provided that includes a nanocomposite comprising a copper selenide (Cu2Se) matrix having a plurality of nanoinclusions comprising copper metal selenide (CuMSe2) distributed therein. M may be selected from the group consisting of: indium (In), aluminum (Al), gallium (Ga), antimony (Sb), bismuth (Bi), and combinations thereof. The thermoelectric composition has an average figure of merit (ZT) of greater than or equal to about 1.5 at a temperature of less than or equal to about 850K (about 577° C.). Methods of making such a thermoelectric nanocomposite material by a sequential solid-state transformation of a CuSe2 precursor are also provided.
Research Organization:
University of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0008574
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
Patent Number(s):
11,482,654
Application Number:
17/075,340
OSTI ID:
1986725
Country of Publication:
United States
Language:
English

References (11)

Chemical Stability of (Ag,Cu)2Se: a Historical Overview journal March 2013
Enhanced Thermoelectricity in High-Temperature β-Phase Copper(I) Selenides Embedded with Cu2Te Nanoclusters journal June 2016
Ultrahigh thermoelectric performance in Cu 2 Se-based hybrid materials with highly dispersed molecular CNTs journal January 2017
Giant enhancement in thermoelectric performance of copper selenide by incorporation of different nanoscale dimensional defect features journal April 2015
Growth of CuInSe 2 crystals in Cu-rich Cu–In–Se thin films journal June 1997
Realizing high figure-of-merit in Cu2Te using a combination of doping, hierarchical structure, and simple processing journal July 2017
Na-Doping Effects on Thermoelectric Properties of Cu2−xSe Nanoplates journal December 2017
CuInSe2 phase formation during Cu2Se/In2Se3 interdiffusion reaction journal April 2000
Are Binary Copper Sulfides/Selenides Really New and Promising Thermoelectric Materials? journal February 2014
Partial indium solubility induces chemical stability and colossal thermoelectric figure of merit in Cu 2 Se journal January 2017
Sulfide bornite thermoelectric material: a natural mineral with ultralow thermal conductivity journal January 2014

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