56263 20240104111803.0 doi 10.1016/j.bsecv.2015.02.004 sideral 92743 ART-2015-92743 eng Constantinescu, G. (orcid)0000-0002-1614-1962 Thermoelectric doping effect in Ca3Co4-xNixO9 ceramics 2015 Access copy available to the general public Unrestricted Ca3Co4-xNixO9 (x=0.01, 0.03, and 0.05) polycrystalline thermoelectric ceramics have been prepared by the classical solid state method. As a result of the Ni addition an increase in porosity has been detected. Moreover, the presence of Ni has been related with the increase of Ca2Co3O6 secondary phase and the appearance of a new NiO-CoO solid solution. However, for the 0.01-Ni doped samples an improvement in the thermoelectric performances has been measured. This effect has been related with a decrease in the resistivity values and an increase in the Seebeck coefficient. The raise in the power factor for the 0.01-Ni doped samples, compared with the undoped ones, is between 10 and 25% at 50 and 800 °C respectively. Moreover, the maximum power at 800 °C, around 0.25 mW/K2.m, is significantly higher than the best results obtained in Ni doped samples reported previously in the literature. info:eu-repo/grantAgreement/ES/DGA/T12 info:eu-repo/grantAgreement/ES/DGA/T87 info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46505-C3-1-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 0.28 2015 MATERIALS SCIENCE, CERAMICS 26 / 27 = 0.963 2015 Q4 T3 0.173 2015 Industrial and Manufacturing Engineering 2015 Q3 Mechanics of Materials 2015 Q4 Ceramics and Composites 2015 Q4 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rasekh, S. (orcid)0000-0003-3466-9952 Torres, M.A. Universidad de Zaragoza (orcid)0000-0003-3995-5763 Bosque, P. (orcid)0000-0003-2501-4479 Madre, M.A. Universidad de Zaragoza (orcid)0000-0002-0794-3998 Sotelo, A. Universidad de Zaragoza (orcid)0000-0001-7056-0546 Diez, J.C. Universidad de Zaragoza (orcid)0000-0001-9995-6368 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 54, 1 (2015), 21-27 Bol. Soc. Esp. Ceram. Vidr. Boletin de la Sociedad Espanola de Ceramica y Vidrio 0366-3175 3008606 http://zaguan.unizar.es/record/56263/files/texto_completo.pdf Versión publicada 8227 http://zaguan.unizar.es/record/56263/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:56263 articulos driver 2024-01-04-10:59:14 ARTICLE