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dc.creatorPrsić, S.
dc.creatorSavić, Slavica M.
dc.creatorBranković, Zorica
dc.creatorVrtnik, S.
dc.creatorDapčević, Aleksandra
dc.creatorBranković, Goran
dc.date.accessioned2021-03-10T12:45:16Z
dc.date.available2021-03-10T12:45:16Z
dc.date.issued2015
dc.identifier.issn0925-8388
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/2992
dc.description.abstractIn the last decade, the sodium cobaltite ceramic became a promising candidate for potential thermoelectric applications, because of its large thermopower and low resistivity. In this work, polycrystalline samples of NaCo(2-x)CuxO(4) (x = 0, 0.01, 0.03, 0.05) were prepared using mechanochemically assisted solid-state reaction method (MASSR) and the citric acid complex method (CAC). Bulk samples were prepared by pressing into disc-shaped pellets and subsequently subjected to a thermal treatment at 880 degrees C in inert argon atmosphere. Changes in structural and microstructural characteristics of the samples, caused by the substitution of Cu for Co, were characterized using X-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM), respectively. The results of inductively coupled plasma (ICP) analysis showed that the compositions of the final products correspond to gamma-NaCo2O4 and confirmed that desired compound was obtained in both syntheses procedures. The advantages and disadvantages of these two syntheses procedures have been observed and discussed: the CAC method enabled obtaining samples with higher density and fine microstructure compared to the MASSR method, thus better thermoelectric properties. The Cu2+ substitution led to the increase in Seebeck coefficient in both synthesis routes. The highest figure of merit of 0.022 at 300 K was observed for the sample doped with 1 mol% Cu, obtained by the CAC method, and it was almost twice higher than in the undoped sample confirming the significant influence of Cu-doping with even small concentrations.en
dc.publisherElsevier Science Sa, Lausanne
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45007/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Alloys and Compounds
dc.subjectCeramicsen
dc.subjectChemical synthesisen
dc.subjectMechanochemical processingen
dc.subjectThermoelectricen
dc.titleMechanochemically assisted solid-state and citric acid complex syntheses of Cu-doped sodium cobaltite ceramicshen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage487
dc.citation.other640: 480-487
dc.citation.rankaM21
dc.citation.spage480
dc.citation.volume640
dc.identifier.doi10.1016/j.jallcom.2015.04.003
dc.identifier.rcubconv_4723
dc.identifier.scopus2-s2.0-84928019074
dc.identifier.wos000354195600074
dc.type.versionpublishedVersion


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