Assessment of thermoelectric, mechanical, and microstructural reinforcement properties of graphene-mixed heterostructures

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dc.contributor.authorZaferani, S.H.
dc.contributor.authorGhomashchi, R.
dc.contributor.authorVashaee, D.
dc.date.issued2021
dc.description.abstractWe examine the role of graphene nanoplates (GNPs) in the critical properties of thermoelectric GNP nanocomposites. After a detailed analysis of the thermoelectric, microstructural, and mechanical characteristics of such nanocomposites, we present a case study based on CoVSn-GNP heterostructures. It is shown that GNPs can improve the mechanical properties without deteriorating the thermoelectric properties of the material. CoVSn-GNP bulk composites are fabricated using powder metallurgy and spark plasma sintering with a GNP weight percentage range of 0–1. All samples with the addition of GNPs showed improved mechanical properties compared with pristine CoVSn. The sample with 0.5 wt % GNPs showed the highest value of Vickers Hardness (737 HV) among all of the studied compositions. Moreover, the fracture toughness was higher for the samples with a lower average crystal size. The concentration and dispersion of GNPs did not significantly change the CoVSn multiphase microstructure; however, it influenced the thermoelectric factors by reducing the thermal conductivity and increasing the Seebeck coefficient, leading to the enhancement of the thermoelectric figure of merit.
dc.description.statementofresponsibilitySadeq Hooshmand Zaferani, Reza Ghomashchi, and Daryoosh Vashaee
dc.identifier.citationACS Applied Energy Materials, 2021; 4(4):3573-3583
dc.identifier.doi10.1021/acsaem.1c00015
dc.identifier.issn2574-0962
dc.identifier.issn2574-0962
dc.identifier.orcidGhomashchi, R. [0000-0003-3633-2296]
dc.identifier.urihttp://hdl.handle.net/2440/131023
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.rights© 2021 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acsaem.1c00015
dc.subjectGraphene nanoplates; heterostructure composition; thermoelectrics; nanostructuring; CoVSn
dc.titleAssessment of thermoelectric, mechanical, and microstructural reinforcement properties of graphene-mixed heterostructures
dc.typeJournal article
pubs.publication-statusPublished

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