Structural stability of the synthetic thermoelectric ternary and nickel-substituted tetrahedrite phases

Autor: Oleg I. Lebedev, Emmanuel Guilmeau, Pierric Lemoine, Ronald I. Smith, Tristan Barbier, Anthony V. Powell, Stéphanie Gascoin, Andreas Kaltzoglou, Paz Vaqueiro
Přispěvatelé: Laboratoire de cristallographie et sciences des matériaux (CRISMAT), École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC), University of Reading (UOR), ISIS, Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), ISIS Facility, STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC)
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Materials science
Tetrahedrite
Neutron diffraction
Analytical chemistry
Spark plasma sintering
02 engineering and technology
engineering.material
010402 general chemistry
01 natural sciences
TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY
Thermoelectric effect
ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION
Materials Chemistry
[CHIM.CRIS]Chemical Sciences/Cristallography
[CHIM]Chemical Sciences
High-resolution transmission electron microscopy
Rietveld refinement
Mechanical Engineering
Metals and Alloys
Powder X-ray diffraction
[CHIM.MATE]Chemical Sciences/Material chemistry
Neutron powder diffraction
021001 nanoscience & nanotechnology
0104 chemical sciences
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
Crystallography
Mechanics of Materials
engineering
0210 nano-technology
Ternary operation
High temperature characterization
Powder diffraction
Transmission electron microscopy
MathematicsofComputing_DISCRETEMATHEMATICS
Thermoelectric compound
Zdroj: Journal of Alloys and Compounds
Journal of Alloys and Compounds, Elsevier, 2015, 634, pp.253-262. ⟨10.1016/j.jallcom.2015.02.045⟩
Journal of Alloys and Compounds, 2015, 634, pp.253-262. ⟨10.1016/j.jallcom.2015.02.045⟩
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2015.02.045⟩
Popis: International audience; The purity and structural stability of the high thermoelectric performance Cu12Sb4S13 and Cu10.4Ni1.6Sb4S13 tetrahedrite phases, synthesized by solid-liquid-vapor reaction and Spark Plasma Sintering, were studied at high temperature by Rietveld refinement using high resolution X-ray powder diffraction data, DSC/TG measurements and high resolution transmission electron microscopy. In a complementary study, the crystal structure of Cu10.5Ni1.5Sb4S13 as a function of temperature was investigated by powder neutron diffraction. The temperature dependence of the structural stability of ternary Cu12Sb4S13 is markedly different to that of the nickel-substituted phases, providing clear evidence for the significant and beneficial role of nickel substitution on both sample purity and stability of the tetrahedrite phase. Moreover, kinetic effects on the phase stability/decomposition have been identified and discussed in order to determine the maximum operating temperature for thermoelectric applications. The thermoelectric properties of these compounds have been determined for high density samples (>98%) prepared by Spark Plasma Sintering and therefore can be used as reference values for tetrahedrite samples. The maximum ZT of 0.8 was found for Cu10.4Ni1.6Sb4S13 at 700 K. © 2015 Elsevier B.V.
Databáze: OpenAIRE
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