Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Panoscopic approach for high-performance Te-doped skutterudite

Journal Article · · NPG Asia Materials (Online)
DOI:https://doi.org/10.1038/am.2017.1· OSTI ID:1356109
 [1];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [2]
  1. Wuhan Univ. of Technology, Hubei (China). State Key Lab. of Advanced Technology for Materials Synthesis and Processing; DOE/OSTI
  2. Wuhan Univ. of Technology, Hubei (China). State Key Lab. of Advanced Technology for Materials Synthesis and Processing
  3. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics
  4. Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry

One-step plasma-activated sintering (OS-PAS) fabrication of single-phase high-performance CoSb3-based skutterudite thermoelectric material with a hierarchical structure on a time scale of a few minutes is first reported here. The formation mechanism of the CoSb3 phase and the effects of the current and pressure fields on the phase transformation and microstructure evolution are studied in the one-step PAS process. The application of the panoscopic approach to this system and its effect on the transport properties are investigated. The results show that the hierarchical structure forms during the formation of the skutterudite phase under the effects of both current and sintering pressure. The samples fabricated by the OS-PAS technique have defined hierarchical structures, which scatter phonons more intensely over a broader range of frequencies and significantly reduce the lattice thermal conductivity. High-performance bulk Te-doped skutterudite with the maximum ZT of 1.1 at 820 K for the composition CoSb2.875Te0.125 was obtained. Such high ZT values rival those obtained from single filled skutterudites. As a result, this newly developed OS-PAS technique enhances the thermoelectric performance, dramatically shortens the synthesis period and provides a facile method for obtaining hierarchical thermoelectric materials on a large scale.

Research Organization:
Wuhan Univ. of Technology, Hubei (China); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Basic Research Program of China; Natural Science Foundation of China; 111 Project of China
Contributing Organization:
Northwestern Univ., Evanston, IL (United States)
Grant/Contract Number:
PI0000012
OSTI ID:
1356109
Alternate ID(s):
OSTI ID: 1362283
Journal Information:
NPG Asia Materials (Online), Journal Name: NPG Asia Materials (Online) Journal Issue: 2 Vol. 9; ISSN 1884-4057
Publisher:
Nature Publishing Group AsiaCopyright Statement
Country of Publication:
United States
Language:
English

References (50)

Field-Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments: FAST/SPS: Mechanisms, Materials, and Technology Developments journal April 2014
Mechanically Robust BiSbTe Alloys with Superior Thermoelectric Performance: A Case Study of Stable Hierarchical Nanostructured Thermoelectric Materials journal November 2014
Atomic Displacement Parameters and the Lattice Thermal Conductivity of Clathrate-like Thermoelectric Compounds journal September 1999
The Co-Sb (Cobalt-Antimony) system journal June 1990
The Co-Sb (Cobalt-Antimony) system journal June 1990
Automotive Applications of Thermoelectric Materials journal February 2009
Skutterudites: Thermoelectric Materials for Automotive Applications? journal November 2009
Overview no. 49: On the mechanisms for the electroplastic effect in metals journal July 1986
Microstructure and thermoelectric properties of CoSb2.75Ge0.25−xTex prepared by rapid solidification journal May 2012
Effect of Fe substitution on the thermoelectric transport properties of CoSb3-based Skutterudite compound journal December 2006
Temperature dependence of thermoelectric properties of Ni-doped CoSb3 journal October 2005
Structure and Transport Properties of Double-Doped CoSb 2.75 Ge 0.25– x Te x ( x = 0.125–0.20) with in Situ Nanostructure journal June 2011
Multiple-Filled Skutterudites: High Thermoelectric Figure of Merit through Separately Optimizing Electrical and Thermal Transports journal May 2011
Multiple-Filled Skutterudites: High Thermoelectric Figure of Merit through Separately Optimizing Electrical and Thermal Transports journal January 2012
Lattice thermal conductivity of minerals at high temperatures journal February 1974
Lattice thermal conductivity of minerals at high temperatures journal February 1974
Convergence of electronic bands for high performance bulk thermoelectrics journal May 2011
High-performance bulk thermoelectrics with all-scale hierarchical architectures journal September 2012
Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals journal April 2014
Self-propagating high-temperature synthesis for compound thermoelectrics and new criterion for combustion processing journal September 2014
Disordered zinc in Zn4Sb3 with phonon-glass and electron-crystal thermoelectric properties journal June 2004
Thermal conductivity of skutterudite CoSb3 from first principles: Substitution and nanoengineering effects journal January 2015
The panoscopic approach to high performance thermoelectrics journal January 2014
Ultra-fast synthesis and thermoelectric properties of Te doped skutterudites journal January 2014
Ultra-fast non-equilibrium synthesis and phase segregation in In x Sn 1−x Te thermoelectrics by SHS-PAS processing journal January 2015
All-scale hierarchical thermoelectrics: MgTe in PbTe facilitates valence band convergence and suppresses bipolar thermal transport for high performance journal January 2013
The panoscopic approach to high performance thermoelectrics journal January 2014
Ultra-fast synthesis and thermoelectric properties of Te doped skutterudites journal January 2014
Ultra-fast non-equilibrium synthesis and phase segregation in In x Sn 1−x Te thermoelectrics by SHS-PAS processing journal January 2015
Anomalous barium filling fraction and n -type thermoelectric performance of BayCo4Sb12 journal August 2001
Thermoelectric properties of Te-doped CoSb3 by spark plasma sintering journal October 2005
Enhanced thermoelectric properties in CoSb3-xTex alloys prepared by mechanical alloying and spark plasma sintering journal November 2007
Rapid preparation method of bulk nanostructured Yb0.3Co4Sb12+y compounds and their improved thermoelectric performance journal December 2008
High performance InxCeyCo4Sb12 thermoelectric materials with in situ forming nanostructured InSb phase journal March 2009
Improving thermoelectric performance of caged compounds through light-element filling journal July 2009
Role of phonon dispersion in studying phonon mean free paths in skutterudites journal August 2012
Simultaneous enhancement in thermoelectric power factor and phonon blocking in hierarchical nanostructured β-Zn 4 Sb 3 -Cu 3 SbSe 4 journal January 2014
Model for Lattice Thermal Conductivity at Low Temperatures journal February 1959
Thermodynamics of phase transitions in current-carrying conductors journal June 1993
Phase transitions in fractal clusters in the presence of electric fields journal November 2000
Filling Fraction Limit for Intrinsic Voids in Crystals: Doping in Skutterudites journal October 2005
Model for Lattice Thermal Conductivity at Low Temperatures journal February 1959
Thermodynamics of phase transitions in current-carrying conductors journal June 1993
Phase transitions in fractal clusters in the presence of electric fields journal November 2000
Filling Fraction Limit for Intrinsic Voids in Crystals: Doping in Skutterudites journal October 2005
Filled Skutterudite Antimonides: A New Class of Thermoelectric Materials journal May 1996
Mechanical Properties of Skutterudites journal August 2011
Automotive Applications of Thermoelectric Materials book April 2012
Influence of electropulsing on nucleation during phase transformation journal December 2002
Influence of electropulsing on nucleation during phase transformation journal December 2002

Cited By (6)

Energy Filtering of Charge Carriers: Current Trends, Challenges, and Prospects for Thermoelectric Materials journal May 2019
Weak Electron Phonon Coupling and Deep Level Impurity for High Thermoelectric Performance Pb 1− x Ga x Te journal May 2018
Thermoelectric performance of CuFeS2+2x composites prepared by rapid thermal explosion journal June 2017
One-step ultra-rapid fabrication and thermoelectric properties of Cu 2 Se bulk thermoelectric material journal January 2019
Filling-Fraction Fluctuation Leading to Glasslike Ultralow Thermal Conductivity in Caged Skutterudites journal June 2017
Performance analysis of thermoelectric generator by using lead telluride, perovskites, skutterudites and tetrahedrites journal September 2019

Similar Records

High performance thermoelectric module through isotype bulk heterojunction engineering of skutterudite materials
Journal Article · Tue Oct 15 00:00:00 EDT 2019 · Nano Energy · OSTI ID:1777109

Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb{sub 3}
Journal Article · Wed Feb 28 23:00:00 EST 2007 · Journal of Applied Physics · OSTI ID:20982733

Related Subjects