A fluorinated polymer sponge with superhydrophobicity for high-performance biomechanical energy harvesting

Zehua Peng; Jian Song; Yuan Gao; Jin Liu; Ching Lee; Guorui Chen; Zuankai Wang; Jun Chen; Michael K.H. Leung

doi:10.1016/j.nanoen.2021.106021

A fluorinated polymer sponge with superhydrophobicity for high-performance biomechanical energy harvesting

Zehua Peng, Jian Song, Yuan Gao, Jin Liu, Ching Lee, Guorui Chen, Zuankai Wang, Jun Chen, Michael K.H. Leung

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

66 Citations (Scopus)

Abstract

Human body contains various biomechanical energy, which emerges as a pervasive and sustainable energy resource for wearable electronics in the era of Internet of Things. We have developed a fluorinated polymer sponge based triboelectric nanogenerator (FPS-TENG) that provides stable electrical output over a wide range of ambient humidity. The humidity resistance due to excellent hydrophobic property of the fluorinated polymer sponge can overcome the adverse effects of moisture. The FPS-TENG also exhibits high durability even after enduring heavy abrasion. The output voltage of the FPS-TENG is three times higher than that of the pristine polymer film (PPF) based TENG. When assembled with hydrophobic copper (HC) contact electrodes, the FPS-TENG retains almost 90% electrical output over 20–85% relative humidity. Moreover, super durability is achieved by quasi-bulk-phase functionalization. After 1 mm-thickness abrasion of the fluorinated polymer sponge, the output voltage is degraded by only 10%. Under the optimal operating conditions, the FPS-TENG delivers a maximum power density of 0.89 W m⁻² at a load resistance of 10 MΩ. The fluorination enhanced triboelectrification and the surface superhydrophobicity induced humidity-stability make the FPS-TENG a sustainable power source for the wearable bioelectronics in the era of Internet of Things.

Original language	English
Article number	106021
Journal	Nano Energy
Volume	85
DOIs	https://doi.org/10.1016/j.nanoen.2021.106021
Publication status	Published - Jul 2021

Keywords

Fluorination
Humidity-stability
Sponge structure
Triboelectric nanogenerator
Wearable bioelectronics

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

More information

10.1016/j.nanoen.2021.106021

Cite this

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title = "A fluorinated polymer sponge with superhydrophobicity for high-performance biomechanical energy harvesting",

abstract = "Human body contains various biomechanical energy, which emerges as a pervasive and sustainable energy resource for wearable electronics in the era of Internet of Things. We have developed a fluorinated polymer sponge based triboelectric nanogenerator (FPS-TENG) that provides stable electrical output over a wide range of ambient humidity. The humidity resistance due to excellent hydrophobic property of the fluorinated polymer sponge can overcome the adverse effects of moisture. The FPS-TENG also exhibits high durability even after enduring heavy abrasion. The output voltage of the FPS-TENG is three times higher than that of the pristine polymer film (PPF) based TENG. When assembled with hydrophobic copper (HC) contact electrodes, the FPS-TENG retains almost 90% electrical output over 20–85% relative humidity. Moreover, super durability is achieved by quasi-bulk-phase functionalization. After 1 mm-thickness abrasion of the fluorinated polymer sponge, the output voltage is degraded by only 10%. Under the optimal operating conditions, the FPS-TENG delivers a maximum power density of 0.89 W m−2 at a load resistance of 10 MΩ. The fluorination enhanced triboelectrification and the surface superhydrophobicity induced humidity-stability make the FPS-TENG a sustainable power source for the wearable bioelectronics in the era of Internet of Things.",

keywords = "Fluorination, Humidity-stability, Sponge structure, Triboelectric nanogenerator, Wearable bioelectronics",

author = "Zehua Peng and Jian Song and Yuan Gao and Jin Liu and Ching Lee and Guorui Chen and Zuankai Wang and Jun Chen and Leung, {Michael K.H.}",

note = "Funding Information: Michael K.H. Leung acknowledges the National Natural Science Foundation of China , China (NSFC) (No. 21875200 ) and the Hong Kong Research Grants Council/General Research Fund , Hong Kong, China (No. 11206520 ). Jun Chen acknowledges the Henry Samueli School of Engineering & Applied Science and the Department of Bioengineering at the University of California, Los Angeles , United States for the startup support. The authors thank Dr. Lingyun Wang, Mr. Guoqiang Xu, and Ms. Jingjing Fu, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, for assistance in technical support of equipment. Funding Information: Michael K.H. Leung acknowledges the National Natural Science Foundation of China, China (NSFC) (No. 21875200) and the Hong Kong Research Grants Council/General Research Fund, Hong Kong, China (No. 11206520). Jun Chen acknowledges the Henry Samueli School of Engineering & Applied Science and the Department of Bioengineering at the University of California, Los Angeles, United States for the startup support. The authors thank Dr. Lingyun Wang, Mr. Guoqiang Xu, and Ms. Jingjing Fu, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, for assistance in technical support of equipment. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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doi = "10.1016/j.nanoen.2021.106021",

language = "English",

volume = "85",

journal = "Nano Energy",

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AU - Peng, Zehua

AU - Song, Jian

AU - Gao, Yuan

AU - Liu, Jin

AU - Lee, Ching

AU - Chen, Guorui

AU - Wang, Zuankai

AU - Chen, Jun

AU - Leung, Michael K.H.

N1 - Funding Information: Michael K.H. Leung acknowledges the National Natural Science Foundation of China , China (NSFC) (No. 21875200 ) and the Hong Kong Research Grants Council/General Research Fund , Hong Kong, China (No. 11206520 ). Jun Chen acknowledges the Henry Samueli School of Engineering & Applied Science and the Department of Bioengineering at the University of California, Los Angeles , United States for the startup support. The authors thank Dr. Lingyun Wang, Mr. Guoqiang Xu, and Ms. Jingjing Fu, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, for assistance in technical support of equipment. Funding Information: Michael K.H. Leung acknowledges the National Natural Science Foundation of China, China (NSFC) (No. 21875200) and the Hong Kong Research Grants Council/General Research Fund, Hong Kong, China (No. 11206520). Jun Chen acknowledges the Henry Samueli School of Engineering & Applied Science and the Department of Bioengineering at the University of California, Los Angeles, United States for the startup support. The authors thank Dr. Lingyun Wang, Mr. Guoqiang Xu, and Ms. Jingjing Fu, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, for assistance in technical support of equipment. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/7

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N2 - Human body contains various biomechanical energy, which emerges as a pervasive and sustainable energy resource for wearable electronics in the era of Internet of Things. We have developed a fluorinated polymer sponge based triboelectric nanogenerator (FPS-TENG) that provides stable electrical output over a wide range of ambient humidity. The humidity resistance due to excellent hydrophobic property of the fluorinated polymer sponge can overcome the adverse effects of moisture. The FPS-TENG also exhibits high durability even after enduring heavy abrasion. The output voltage of the FPS-TENG is three times higher than that of the pristine polymer film (PPF) based TENG. When assembled with hydrophobic copper (HC) contact electrodes, the FPS-TENG retains almost 90% electrical output over 20–85% relative humidity. Moreover, super durability is achieved by quasi-bulk-phase functionalization. After 1 mm-thickness abrasion of the fluorinated polymer sponge, the output voltage is degraded by only 10%. Under the optimal operating conditions, the FPS-TENG delivers a maximum power density of 0.89 W m−2 at a load resistance of 10 MΩ. The fluorination enhanced triboelectrification and the surface superhydrophobicity induced humidity-stability make the FPS-TENG a sustainable power source for the wearable bioelectronics in the era of Internet of Things.

AB - Human body contains various biomechanical energy, which emerges as a pervasive and sustainable energy resource for wearable electronics in the era of Internet of Things. We have developed a fluorinated polymer sponge based triboelectric nanogenerator (FPS-TENG) that provides stable electrical output over a wide range of ambient humidity. The humidity resistance due to excellent hydrophobic property of the fluorinated polymer sponge can overcome the adverse effects of moisture. The FPS-TENG also exhibits high durability even after enduring heavy abrasion. The output voltage of the FPS-TENG is three times higher than that of the pristine polymer film (PPF) based TENG. When assembled with hydrophobic copper (HC) contact electrodes, the FPS-TENG retains almost 90% electrical output over 20–85% relative humidity. Moreover, super durability is achieved by quasi-bulk-phase functionalization. After 1 mm-thickness abrasion of the fluorinated polymer sponge, the output voltage is degraded by only 10%. Under the optimal operating conditions, the FPS-TENG delivers a maximum power density of 0.89 W m−2 at a load resistance of 10 MΩ. The fluorination enhanced triboelectrification and the surface superhydrophobicity induced humidity-stability make the FPS-TENG a sustainable power source for the wearable bioelectronics in the era of Internet of Things.

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KW - Humidity-stability

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KW - Wearable bioelectronics

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A fluorinated polymer sponge with superhydrophobicity for high-performance biomechanical energy harvesting

Abstract

Keywords

ASJC Scopus subject areas

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