Tuning thermal conductivity in molybdenum disulfide by electrochemical intercalation

Zhu, Gaohua; Líu, Jùn; Zheng, Qiye; Zhang, Ruigang; Li, Dongyao; Banerjee, Debasish

doi:10.1038/ncomms13211

Cited by 163 publications

(154 citation statements)

References 54 publications

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“…Hence, the x in TaS 2 (CTA + ) x could be determined by the duration of galvanostatic discharge process. This method is also used in determination of Li content in electrochemical intercalated Li x MoS 2 and Li x NbSe 2 [18,19]. The pristine 2H-TaS 2 bears a space group of P63/mmc with the c-axis of 12.08 Å.…”

Section: Resultsmentioning

confidence: 99%

Tunable superconductivity by electrochemical intercalation in TaS₂

et al. 2018

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The controllable manipulation of materials properties has always attracted broad interests since there exists the possibility to identify the relationship between different electronic states, and even discover new states. Here we report the electrochemical intercalation of cetyltrimethylammonium (CTA + ) into 2H-TaS 2 . The single layer TaS 2 is intercalated with CTA + cations and the direction of CTA + is approximately perpendicular to the lamellar structure of TaS 2 . With this facile and efficient method, the superconducting transition temperature (T c ) of pristine TaS 2 increases from 0.8 K to the maximum 3.7 K, showing a dome-like behavior. The Hall coefficient measurement indicates that the intercalated CTA + cations introduce electrons to this system. The present results demonstrate that electrochemical intercalation method is effective in tuning the materials properties and may pave the way for exploring new superconductors.

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Section: Resultsmentioning

confidence: 99%

Tunable superconductivity by electrochemical intercalation in TaS₂

et al. 2018

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“…This part was not included in the SW potentials. From here on, we only use the REBO-LJ potential and the efficient HNEMD method, focusing on comparisons with experiments [8][9][10][11][12][13][14][15][16][17][18] and results from BTE approach combined with DFT calculations [19,20].…”

Section: Comparison Among the Empirical Potentials And With Experimentioning

confidence: 99%

“…Thermal conductivity as a function of the number of layers for MoS2 at 300 K and zero pressure. Sources of reference data: Liu [9]; Zhu [10]; Jiang [11]; Sahoo [12]; Jo [13]; Yan [14]; Zhang [15]; Bae [16]; Yarali [17]; Aiyiti [18]; Gu [20].…”

Section: Comparison Among the Empirical Potentials And With Experimentioning

confidence: 99%

Thermal transport in MoS2 from molecular dynamics using different empirical potentials

Gabourie

Hashemi

et al. 2019

Phys. Rev. B

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Thermal properties of molybdenum disulfide (MoS2) have recently attracted attention related to fundamentals of heat propagation in strongly anisotropic materials, and in the context of potential applications to optoelectronics and thermoelectrics. Multiple empirical potentials have been developed for classical molecular dynamics (MD) simulations of this material, but it has been unclear which provides the most realistic results. Here, we calculate lattice thermal conductivity of singleand multi-layer pristine MoS2 by employing three different thermal transport MD methods: equilibrium, nonequilibrium, and homogeneous nonequilibrium ones. These methods allow us to verify the consistency of our results and also facilitate comparisons with previous works, where different schemes have been adopted. Our results using variants of the Stillinger-Weber potential are at odds with some previous ones and we analyze the possible origins of the discrepancies in detail. We show that, among the potentials considered here, the reactive empirical bond order (REBO) potential gives the most reasonable predictions of thermal transport properties as compared to experimental data. With the REBO potential, we further find that isotope scattering has only a small effect on thermal conduction in MoS2 and the in-plane thermal conductivity decreases with increasing layer number and saturates beyond about three layers. We identify the REBO potential as a transferable empirical potential for MD simulations of MoS2 which can be used to study thermal transport properties in more complicated situations such as in systems containing defects or engineered nanoscale features. This work establishes a firm foundation for understanding heat transport properties of MoS2 using MD simulations.

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“…Besides, a non-contact pump-probe measurement method, the time domain thermoreflectance (TDTR) technique firstly demonstrated by Paddock and Eesley [18] has been extended to various novel and sophisticated measurements [19][20][21][22][23][24][25][26], including both in-plain and through-plain thermal conductivity of supported samples. Compared with the other techniques mentioned above, the TDTR technique requires more sophisticated and expensive setups as well as very careful operation to obtain data that need to be derived by extra modeling and analysis.…”

Section: Introductionmentioning

confidence: 99%

Measuring the thermal conductivity and interfacial thermal resistance of suspended MoS 2 using electron beam self-heating technique

Aiyiti

Bai

et al. 2018

Science Bulletin

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Establishment of a new technique or extension of an existing technique for thermal and thermoelectric measurements to a more challenging system is an important task to explore the thermal and thermoelectric properties of various materials and systems. The bottleneck lies in the challenges in measuring the thermal contact resistance. In this work, we applied electron beam self-heating technique to derive the intrinsic thermal conductivity of suspended Molybdenum Disulfide (MoS2) ribbons and the thermal contact resistance, with which the interfacial thermal resistance between few-layer MoS2 and Pt electrodes was calculated. The measured room temperature thermal conductivity of MoS2 is around ~ 30 W/mK, while the estimated interfacial thermal resistance is around ~ 2×10 −6 m 2 K/W. Our experiments extend a useful branch in application of this technique for studying thermal properties of suspended layered ribbons and have potential application in investigating the interfacial thermal resistance of different 2D heterojunctions.

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Tuning thermal conductivity in molybdenum disulfide by electrochemical intercalation

Cited by 163 publications

References 54 publications

Tunable superconductivity by electrochemical intercalation in TaS₂

Tunable superconductivity by electrochemical intercalation in TaS₂

Thermal transport in MoS2 from molecular dynamics using different empirical potentials

Measuring the thermal conductivity and interfacial thermal resistance of suspended MoS 2 using electron beam self-heating technique

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Tuning thermal conductivity in molybdenum disulfide by electrochemical intercalation

Cited by 163 publications

References 54 publications

Tunable superconductivity by electrochemical intercalation in TaS2

Tunable superconductivity by electrochemical intercalation in TaS2

Thermal transport in MoS2 from molecular dynamics using different empirical potentials

Measuring the thermal conductivity and interfacial thermal resistance of suspended MoS 2 using electron beam self-heating technique

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Tunable superconductivity by electrochemical intercalation in TaS₂

Tunable superconductivity by electrochemical intercalation in TaS₂