000056263 001__ 56263 000056263 005__ 20240104111803.0 000056263 0247_ $$2doi$$a10.1016/j.bsecv.2015.02.004 000056263 0248_ $$2sideral$$a92743 000056263 037__ $$aART-2015-92743 000056263 041__ $$aeng 000056263 100__ $$0(orcid)0000-0002-1614-1962$$aConstantinescu, G. 000056263 245__ $$aThermoelectric doping effect in Ca3Co4-xNixO9 ceramics 000056263 260__ $$c2015 000056263 5060_ $$aAccess copy available to the general public$$fUnrestricted 000056263 5203_ $$aCa3Co4-xNixO9 (x=0.01, 0.03, and 0.05) polycrystalline thermoelectric ceramics have been prepared by the classical solid state method. As a result of the Ni addition an increase in porosity has been detected. Moreover, the presence of Ni has been related with the increase of Ca2Co3O6 secondary phase and the appearance of a new NiO-CoO solid solution. However, for the 0.01-Ni doped samples an improvement in the thermoelectric performances has been measured. This effect has been related with a decrease in the resistivity values and an increase in the Seebeck coefficient. The raise in the power factor for the 0.01-Ni doped samples, compared with the undoped ones, is between 10 and 25% at 50 and 800 °C respectively. Moreover, the maximum power at 800 °C, around 0.25 mW/K2.m, is significantly higher than the best results obtained in Ni doped samples reported previously in the literature. 000056263 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T12$$9info:eu-repo/grantAgreement/ES/DGA/T87$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46505-C3-1-R 000056263 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000056263 590__ $$a0.28$$b2015 000056263 591__ $$aMATERIALS SCIENCE, CERAMICS$$b26 / 27 = 0.963$$c2015$$dQ4$$eT3 000056263 592__ $$a0.173$$b2015 000056263 593__ $$aIndustrial and Manufacturing Engineering$$c2015$$dQ3 000056263 593__ $$aMechanics of Materials$$c2015$$dQ4 000056263 593__ $$aCeramics and Composites$$c2015$$dQ4 000056263 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000056263 700__ $$0(orcid)0000-0003-3466-9952$$aRasekh, S. 000056263 700__ $$0(orcid)0000-0003-3995-5763$$aTorres, M.A.$$uUniversidad de Zaragoza 000056263 700__ $$0(orcid)0000-0003-2501-4479$$aBosque, P. 000056263 700__ $$0(orcid)0000-0002-0794-3998$$aMadre, M.A.$$uUniversidad de Zaragoza 000056263 700__ $$0(orcid)0000-0001-7056-0546$$aSotelo, A.$$uUniversidad de Zaragoza 000056263 700__ $$0(orcid)0000-0001-9995-6368$$aDiez, J.C.$$uUniversidad de Zaragoza 000056263 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing. 000056263 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal. 000056263 773__ $$g54, 1 (2015), 21-27$$pBol. Soc. Esp. Ceram. Vidr.$$tBoletin de la Sociedad Espanola de Ceramica y Vidrio$$x0366-3175 000056263 8564_ $$s3008606$$uhttps://zaguan.unizar.es/record/56263/files/texto_completo.pdf$$yVersión publicada 000056263 8564_ $$s8227$$uhttps://zaguan.unizar.es/record/56263/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000056263 909CO $$ooai:zaguan.unizar.es:56263$$particulos$$pdriver 000056263 951__ $$a2024-01-04-10:59:14 000056263 980__ $$aARTICLE