Abstract:
:Thermal conductivity of two-dimensional (2D) materials is of interest for energy storage, nanoelectronics and optoelectronics. Here, we report that the thermal conductivity of molybdenum disulfide can be modified by electrochemical intercalation. We observe distinct behaviour for thin films with vertically aligned basal planes and natural bulk crystals with basal planes aligned parallel to the surface. The thermal conductivity is measured as a function of the degree of lithiation, using time-domain thermoreflectance. The change of thermal conductivity correlates with the lithiation-induced structural and compositional disorder. We further show that the ratio of the in-plane to through-plane thermal conductivity of bulk crystal is enhanced by the disorder. These results suggest that stacking disorder and mixture of phases is an effective mechanism to modify the anisotropic thermal conductivity of 2D materials.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Zhu G,Liu J,Zheng Q,Zhang R,Li D,Banerjee D,Cahill DGdoi
10.1038/ncomms13211subject
Has Abstractpub_date
2016-10-21 00:00:00pages
13211issn
2041-1723pii
ncomms13211journal_volume
7pub_type
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