Tuned thermoelectric properties of TiS1.5Se 0.5 through copper intercalation
| Autor: | Raghavendra Nunna, Franck Gascoin, Emmanuel Guilmeau |
|---|---|
| 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), 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) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Mechanical Engineering Thermoelectric Intercalation (chemistry) Metallurgy Transition metal chalcogenides Metals and Alloys Analytical chemistry chemistry.chemical_element Spark plasma sintering [CHIM.MATE]Chemical Sciences/Material chemistry Thermoelectric materials Copper Titanium chalcogenide [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry Lattice constant Layered compounds chemistry Mechanics of Materials Electrical resistivity and conductivity Seebeck coefficient Thermoelectric effect Materials Chemistry [CHIM.CRIS]Chemical Sciences/Cristallography [CHIM]Chemical Sciences |
| Zdroj: | Journal of Alloys and Compounds Journal of Alloys and Compounds, Elsevier, 2015, 634, pp.32-36. ⟨10.1016/j.jallcom.2015.02.021⟩ Journal of Alloys and Compounds, 2015, 634, pp.32-36. ⟨10.1016/j.jallcom.2015.02.021⟩ |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2015.02.021⟩ |
| Popis: | International audience; Polycrystalline samples of copper intercalated Cux TiS1.5Se 0.5 (x = 0, 0.025, 0.05 and 0.1) are synthesized by classical high temperature reaction. The resulting powders are successfully densified by using spark plasma sintering. As expected, XRD refinements show that Cu intercalation between TiS1.5Se 0.5 slabs induces an increase in the c lattice parameter. Electrical resistivity and Seebeck coefficient decrease drastically with increasing Cu content, direct consequence of the increased carrier concentration. In parallel, the lattice thermal conductivity of CuxTiS1.5Se 0.5 is significantly reduced compared to unfilled TiS1.5Se 0.5. Overall, the dimensionless thermoelectric figure of merit increases with temperature and reaches a maximum value of 0.54 at 700 K for Cu0.05TiS1.5Se 0.5, the highest value so far observed in layered titanium chalcogenides. © 2015 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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