Enhanced thermoelectric properties of MoS2 with the incorporation of reduced graphene oxide (RGO)

Molybdenum disulfide (MoS2), a transition metal dichalcogenides (TMDs) is a potential candidate for thermoelectric due to its inherent low thermal conductivity. However, its low electrical conductivity confines its practical usage. In this paper, we have synthesized nanocomposite of MoS2 with reduce...

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Bibliographic Details
Published in:Journal of alloys and compounds 2020-10, Vol.838, p.155673, Article 155673
Main Authors: Gautam, Amish Kumar, Faraz, Mohd, Khare, Neeraj
Format: Article
Language:English
Subjects:
Electrical resistivity
Figure of merit
Graphene
Heat conductivity
Heat transfer
Molybdenum disulfide
MoS2
Nanocomposite
Nanocomposites
Reduced graphene oxide
Seebeck effect
Thermal conductivity
Thermoelectricity
Thermoelectrics
Transition metal compounds
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Summary:Molybdenum disulfide (MoS2), a transition metal dichalcogenides (TMDs) is a potential candidate for thermoelectric due to its inherent low thermal conductivity. However, its low electrical conductivity confines its practical usage. In this paper, we have synthesized nanocomposite of MoS2 with reduced graphene oxide (RGO) and demonstrated a ∼5920% increase in the thermoelectric figure of merit of MoS2 after formation of MoS2-RGO nanocomposite. This ultra-high enhanced thermoelectric figure of merit is due to significantly enhanced electrical conductivity, increased Seebeck effect and simultaneous reduction of thermal conductivity of MoS2 in the MoS2-RGO nanocomposite. Presence of RGO in the matrix of MoS2 in MoS2-RGO nanocomposite provides conducting path, reduces interface barrier height and also provides enhanced scattering of phonons. •MoS2-RGO nanocomposite has been synthesized by reflux method.•Structural characterizations of MoS2-RGO nanocomposite have been done.•MoS2 is a potential candidate for thermoelectric Application.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2020.155673