Improved thermoelectric performances in textured Bi1.6Pb0.4Ba2Co2Oy/Ag composites

Sotelo, A. (Universidad de Zaragoza) ; Rasekh, S. ; Torres, M. A. (Universidad de Zaragoza) ; Bosque, P. ; Madre, M. A. (Universidad de Zaragoza) ; Diez, J. C. (Universidad de Zaragoza)

Resumen: Bi1.6Pb0.4Ba2Co2Oy thermoelectric ceramics with small Ag additions (0, 1, 3, and 5 wt%) have been textured using the laser floating zone method. Microstructure has shown a slight decrease on the secondary phases content and a better grain alignment in Ag added samples. These microstructural features are reflected in the thermoelectric properties, which have shown a significant decrease of electrical resistivity, when the Ag content is raised. In spite of a corresponding decrease of Seebeck coefficient, all the Ag-containing samples possess higher Power Factor values than the Bi1.6Pb0.4Ba2Co2Oy ones. Moreover, the maximum Power Factor values (about 0.36 mW/K2.m at 650 °C) have been measured in Bi1.6Pb0.4Ba2Co2Oy+3 wt% Ag samples, which are the best results reported in this family of materials.

Idioma: Inglés

DOI: 10.1016/j.ceramint.2016.08.202

Año: 2016

Publicado en: Ceramics International 42, 16 (2016), 18592-18596
ISSN: 0272-8842

Factor impacto JCR: 2.986 (2016)

Categ. JCR: MATERIALS SCIENCE, CHARACTERIZATION & TESTING rank: 2 / 26 = 0.077 (2016) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, CERAMICS rank: 2 / 26 = 0.077 (2016) - Q1 - T1

Factor impacto SCIMAGO: 0.843 - Electronic, Optical and Magnetic Materials (Q1) - Ceramics and Composites (Q1) - Surfaces, Coatings and Films (Q1) - Process Chemistry and Technology (Q1) - Materials Chemistry (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T12
Financiación: info:eu-repo/grantAgreement/ES/DGA/T87
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46505-C3-1-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Expresión Gráfica en Ing. (Dpto. Ingeniería Diseño Fabri.)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)