Tunable piezoelectric nanogenerators using flexoelectricity of well-ordered hollow 2D MoS2 shells arrays for energy harvesting

Jin Kyu Han; Sungho Kim; Seunghun Jang; Yi Rang Lim; Sang Woo Kim; Hyunju Chang; Wooseok Song; Sun Sook Lee; Jongsun Lim; Ki Seok An; Sung Myung

doi:10.1016/j.nanoen.2019.05.017

Tunable piezoelectric nanogenerators using flexoelectricity of well-ordered hollow 2D MoS₂ shells arrays for energy harvesting

Jin Kyu Han, Sungho Kim, Seunghun Jang, Yi Rang Lim, Sang Woo Kim, Hyunju Chang, Wooseok Song, Sun Sook Lee, Jongsun Lim, Ki Seok An, Sung Myung

Department of Materials Science and Engineering

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

26 Citations (Scopus)

Abstract

Piezoelectric two-dimensional (2D) transition-metal dichalcogenides such as molybdenum disulfide (MoS₂) have recently attracted significant attention owing to their applicability for fabrication of flexible power generators. In this study, novel piezoelectric nanogenerators (PNGs) consisting of 2D piezoelectric MoS₂ shells are fabricated where an Al₂O₃ thin layer deposited on the surface of polystyrene (PS) beads is used to avoid collapse of the spherical MoS₂ shells under the high growth temperature. In addition, the MoS₂ shell size is controlled by adjusting the PS bead size and the effects of the MoS₂ shell size on power generation characteristics are investigated. Our PNG based on the piezoelectric MoS₂ shells produces a peak output voltage of approximately 1.2 V at a pressure of 4.2 kPa. The minimum pressure for power generation by tapping is 0.3 kPa. This novel method is very promising for development of the next-generation PNGs based on 2D semiconductor piezoelectric materials.

Original language	English
Pages (from-to)	471-477
Number of pages	7
Journal	Nano Energy
Volume	61
DOIs	https://doi.org/10.1016/j.nanoen.2019.05.017
Publication status	Published - 2019 Jul

Bibliographical note

Funding Information:
J.K.H and S.H.K contributed equally to this work. This research was supported by a grant ( 2011-0031636 ) from the Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Science, ICT and Future Planning, Korea . This research was also supported by Multi-Ministry Collaborative R&D Program through the National Research Foundation of Korea (NRF) funded by KNPA, MSIT, MOTIE, ME, NFA ( NRF-2017M3D9A1073502 ).

Publisher Copyright:
© 2019 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Materials Science(all)
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nanoen.2019.05.017

Cite this

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title = "Tunable piezoelectric nanogenerators using flexoelectricity of well-ordered hollow 2D MoS2 shells arrays for energy harvesting",

abstract = "Piezoelectric two-dimensional (2D) transition-metal dichalcogenides such as molybdenum disulfide (MoS2) have recently attracted significant attention owing to their applicability for fabrication of flexible power generators. In this study, novel piezoelectric nanogenerators (PNGs) consisting of 2D piezoelectric MoS2 shells are fabricated where an Al2O3 thin layer deposited on the surface of polystyrene (PS) beads is used to avoid collapse of the spherical MoS2 shells under the high growth temperature. In addition, the MoS2 shell size is controlled by adjusting the PS bead size and the effects of the MoS2 shell size on power generation characteristics are investigated. Our PNG based on the piezoelectric MoS2 shells produces a peak output voltage of approximately 1.2 V at a pressure of 4.2 kPa. The minimum pressure for power generation by tapping is 0.3 kPa. This novel method is very promising for development of the next-generation PNGs based on 2D semiconductor piezoelectric materials.",

author = "Han, {Jin Kyu} and Sungho Kim and Seunghun Jang and Lim, {Yi Rang} and Kim, {Sang Woo} and Hyunju Chang and Wooseok Song and Lee, {Sun Sook} and Jongsun Lim and An, {Ki Seok} and Sung Myung",

note = "Funding Information: J.K.H and S.H.K contributed equally to this work. This research was supported by a grant ( 2011-0031636 ) from the Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Science, ICT and Future Planning, Korea . This research was also supported by Multi-Ministry Collaborative R&D Program through the National Research Foundation of Korea (NRF) funded by KNPA, MSIT, MOTIE, ME, NFA ( NRF-2017M3D9A1073502 ). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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AU - Han, Jin Kyu

AU - Kim, Sungho

AU - Jang, Seunghun

AU - Lim, Yi Rang

AU - Kim, Sang Woo

AU - Chang, Hyunju

AU - Song, Wooseok

AU - Lee, Sun Sook

AU - Lim, Jongsun

AU - An, Ki Seok

AU - Myung, Sung

N1 - Funding Information: J.K.H and S.H.K contributed equally to this work. This research was supported by a grant ( 2011-0031636 ) from the Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Science, ICT and Future Planning, Korea . This research was also supported by Multi-Ministry Collaborative R&D Program through the National Research Foundation of Korea (NRF) funded by KNPA, MSIT, MOTIE, ME, NFA ( NRF-2017M3D9A1073502 ). Publisher Copyright: © 2019 Elsevier Ltd

PY - 2019/7

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N2 - Piezoelectric two-dimensional (2D) transition-metal dichalcogenides such as molybdenum disulfide (MoS2) have recently attracted significant attention owing to their applicability for fabrication of flexible power generators. In this study, novel piezoelectric nanogenerators (PNGs) consisting of 2D piezoelectric MoS2 shells are fabricated where an Al2O3 thin layer deposited on the surface of polystyrene (PS) beads is used to avoid collapse of the spherical MoS2 shells under the high growth temperature. In addition, the MoS2 shell size is controlled by adjusting the PS bead size and the effects of the MoS2 shell size on power generation characteristics are investigated. Our PNG based on the piezoelectric MoS2 shells produces a peak output voltage of approximately 1.2 V at a pressure of 4.2 kPa. The minimum pressure for power generation by tapping is 0.3 kPa. This novel method is very promising for development of the next-generation PNGs based on 2D semiconductor piezoelectric materials.

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