dc.creator | Prsić, S. | |
dc.creator | Savić, Slavica M. | |
dc.creator | Branković, Zorica | |
dc.creator | Vrtnik, S. | |
dc.creator | Dapčević, Aleksandra | |
dc.creator | Branković, Goran | |
dc.date.accessioned | 2021-03-10T12:45:16Z | |
dc.date.available | 2021-03-10T12:45:16Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 0925-8388 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2992 | |
dc.description.abstract | In 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.publisher | Elsevier Science Sa, Lausanne | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45007/RS// | |
dc.rights | restrictedAccess | |
dc.source | Journal of Alloys and Compounds | |
dc.subject | Ceramics | en |
dc.subject | Chemical synthesis | en |
dc.subject | Mechanochemical processing | en |
dc.subject | Thermoelectric | en |
dc.title | Mechanochemically assisted solid-state and citric acid complex syntheses of Cu-doped sodium cobaltite ceramicsh | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 487 | |
dc.citation.other | 640: 480-487 | |
dc.citation.rank | aM21 | |
dc.citation.spage | 480 | |
dc.citation.volume | 640 | |
dc.identifier.doi | 10.1016/j.jallcom.2015.04.003 | |
dc.identifier.scopus | 2-s2.0-84928019074 | |
dc.identifier.wos | 000354195600074 | |
dc.type.version | publishedVersion | |