Enhanced thermoelectric performance of PbSe-graphene nanocomposite manufactured with acoustic cavitation induced defects

Chhatrasal Gayner; Raghunandan Sharma; Iram Malik; Mukesh Kumar; Sugandha Singh; Kiran Kumar; Jitendra Tahalyani; Tulika Srivastava; Kamal K. Kar; Hiroyuki Yokoi; Amit K. Naskar

doi:10.1016/j.nanoen.2022.106943

Enhanced thermoelectric performance of PbSe-graphene nanocomposite manufactured with acoustic cavitation induced defects

Chhatrasal Gayner, Raghunandan Sharma, Iram Malik, Mukesh Kumar, Sugandha Singh, Kiran Kumar, Jitendra Tahalyani, Tulika Srivastava, Kamal K. Kar, Hiroyuki Yokoi, Amit K. Naskar

Carbon and Composites

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

An order of magnitude rise in the thermoelectric (TE) performance of the PbSe, a scalable and easy-to-manufacture TE material, has been achieved by incorporating reduced graphene oxide (Gr) nanoplatelets in a PbSe/PbSeO₃ heterostructure formed by acoustic cavitation-assisted oxidation. The fabricated Gr/PbSe/PbSeO₃ nanocomposites exhibit high TE performance with an exceptionally high Seebeck coefficient coupled with low thermal conductivity. The variation in the Seebeck coefficient has been attributed to a reduction in charge carrier mobility due to the ferroelectric polarization effect. Furthermore, the increase in electrical resistivity is minimized by adding graphene. At an optimal weight fraction (0.2 wt%), graphene nano-inclusions lead to superior Seebeck coefficient values as high as ~2000 μV/K at ~500 K, providing high overall TE performance. This study shows substantial changes in the TE properties of PbSe through the incorporation of graphene and PbSeO₃. The understanding and methodology developed in this study can be exploited for the scalable manufacturing of high-performance TE materials.

Original language	English
Article number	106943
Journal	Nano Energy
Volume	94
DOIs	https://doi.org/10.1016/j.nanoen.2022.106943
State	Published - Apr 2022

Funding

This research was supported by the Department of Science and Technology , Government of India ( DST/TMD/MES/2K16/37(G) ). AKN acknowledges support from the Laboratory Director’s R&D Program of Oak Ridge National Laboratory , managed by UT Battelle, LLC, for the US Department of Energy ( DE-AC05-00OR22725 ). This research was supported by the Department of Science and Technology, Government of India (DST/TMD/MES/2K16/37(G)). AKN acknowledges support from the Laboratory Director's R&D Program of Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the US Department of Energy (DE-AC05-00OR22725).

Keywords

Acoustic cavitation
Defects
Electrical and thermal properties
PbSe-Graphene nanocomposite
Structure-property correlations
Thermoelectrics

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10.1016/j.nanoen.2022.106943

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title = "Enhanced thermoelectric performance of PbSe-graphene nanocomposite manufactured with acoustic cavitation induced defects",

abstract = "An order of magnitude rise in the thermoelectric (TE) performance of the PbSe, a scalable and easy-to-manufacture TE material, has been achieved by incorporating reduced graphene oxide (Gr) nanoplatelets in a PbSe/PbSeO3 heterostructure formed by acoustic cavitation-assisted oxidation. The fabricated Gr/PbSe/PbSeO3 nanocomposites exhibit high TE performance with an exceptionally high Seebeck coefficient coupled with low thermal conductivity. The variation in the Seebeck coefficient has been attributed to a reduction in charge carrier mobility due to the ferroelectric polarization effect. Furthermore, the increase in electrical resistivity is minimized by adding graphene. At an optimal weight fraction (0.2 wt%), graphene nano-inclusions lead to superior Seebeck coefficient values as high as ~2000 μV/K at ~500 K, providing high overall TE performance. This study shows substantial changes in the TE properties of PbSe through the incorporation of graphene and PbSeO3. The understanding and methodology developed in this study can be exploited for the scalable manufacturing of high-performance TE materials.",

keywords = "Acoustic cavitation, Defects, Electrical and thermal properties, PbSe-Graphene nanocomposite, Structure-property correlations, Thermoelectrics",

author = "Chhatrasal Gayner and Raghunandan Sharma and Iram Malik and Mukesh Kumar and Sugandha Singh and Kiran Kumar and Jitendra Tahalyani and Tulika Srivastava and Kar, {Kamal K.} and Hiroyuki Yokoi and Naskar, {Amit K.}",

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doi = "10.1016/j.nanoen.2022.106943",

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AU - Gayner, Chhatrasal

AU - Sharma, Raghunandan

AU - Malik, Iram

AU - Kumar, Mukesh

AU - Singh, Sugandha

AU - Kumar, Kiran

AU - Tahalyani, Jitendra

AU - Srivastava, Tulika

AU - Kar, Kamal K.

AU - Yokoi, Hiroyuki

AU - Naskar, Amit K.

PY - 2022/4

Y1 - 2022/4

N2 - An order of magnitude rise in the thermoelectric (TE) performance of the PbSe, a scalable and easy-to-manufacture TE material, has been achieved by incorporating reduced graphene oxide (Gr) nanoplatelets in a PbSe/PbSeO3 heterostructure formed by acoustic cavitation-assisted oxidation. The fabricated Gr/PbSe/PbSeO3 nanocomposites exhibit high TE performance with an exceptionally high Seebeck coefficient coupled with low thermal conductivity. The variation in the Seebeck coefficient has been attributed to a reduction in charge carrier mobility due to the ferroelectric polarization effect. Furthermore, the increase in electrical resistivity is minimized by adding graphene. At an optimal weight fraction (0.2 wt%), graphene nano-inclusions lead to superior Seebeck coefficient values as high as ~2000 μV/K at ~500 K, providing high overall TE performance. This study shows substantial changes in the TE properties of PbSe through the incorporation of graphene and PbSeO3. The understanding and methodology developed in this study can be exploited for the scalable manufacturing of high-performance TE materials.

AB - An order of magnitude rise in the thermoelectric (TE) performance of the PbSe, a scalable and easy-to-manufacture TE material, has been achieved by incorporating reduced graphene oxide (Gr) nanoplatelets in a PbSe/PbSeO3 heterostructure formed by acoustic cavitation-assisted oxidation. The fabricated Gr/PbSe/PbSeO3 nanocomposites exhibit high TE performance with an exceptionally high Seebeck coefficient coupled with low thermal conductivity. The variation in the Seebeck coefficient has been attributed to a reduction in charge carrier mobility due to the ferroelectric polarization effect. Furthermore, the increase in electrical resistivity is minimized by adding graphene. At an optimal weight fraction (0.2 wt%), graphene nano-inclusions lead to superior Seebeck coefficient values as high as ~2000 μV/K at ~500 K, providing high overall TE performance. This study shows substantial changes in the TE properties of PbSe through the incorporation of graphene and PbSeO3. The understanding and methodology developed in this study can be exploited for the scalable manufacturing of high-performance TE materials.

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KW - Defects

KW - Electrical and thermal properties

KW - PbSe-Graphene nanocomposite

KW - Structure-property correlations

KW - Thermoelectrics

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Enhanced thermoelectric performance of PbSe-graphene nanocomposite manufactured with acoustic cavitation induced defects

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