Triboelectrification-Induced Large Electric Power Generation from a Single Moving Droplet on Graphene/Polytetrafluoroethylene

Sung Soo Kwak; Shisheng Lin; Jeong Hwan Lee; Hanjun Ryu; Tae Yun Kim; Huikai Zhong; Hongsheng Chen; Sang Woo Kim

doi:10.1021/acsnano.6b03032

Triboelectrification-Induced Large Electric Power Generation from a Single Moving Droplet on Graphene/Polytetrafluoroethylene

Sung Soo Kwak, Shisheng Lin, Jeong Hwan Lee, Hanjun Ryu, Tae Yun Kim, Huikai Zhong, Hongsheng Chen, Sang Woo Kim

Department of Materials Science and Engineering

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

Abstract

Recently, several reports have demonstrated that a moving droplet of seawater or ionic solution over monolayer graphene produces an electric power of about 19 nW, and this has been suggested to be a result of the pseudocapacitive effect between graphene and the liquid droplet. Here, we show that the change in the triboelectrification-induced pseudocapacitance between the water droplet and monolayer graphene on polytetrafluoroethylene (PTFE) results in a large power output of about 1.9 μW, which is about 100 times larger than that presented in previous research. During the graphene transfer process, a very strong negative triboelectric potential is generated on the surface of the PTFE. Positive and negative charge accumulation, respectively, occurs on the bottom and the top surfaces of graphene due to the triboelectric potential, and the negative charges that accumulate on the top surface of graphene are driven forward by the moving droplet, charging and discharging at the front and rear of the droplet.

Original language	English
Pages (from-to)	7297-7302
Number of pages	6
Journal	ACS Nano
Volume	10
Issue number	8
DOIs	https://doi.org/10.1021/acsnano.6b03032
Publication status	Published - 2016 Aug 23

Bibliographical note

Funding Information:
This work was financially supported by the Framework of International Cooperation Program managed by National Research Foundation of Korea grant (NRF- 2015K2A2A7056357) funded by the Ministry of Science, ICT & Future Planning and Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20154030200870).

Publisher Copyright:
© 2016 American Chemical Society.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

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10.1021/acsnano.6b03032

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title = "Triboelectrification-Induced Large Electric Power Generation from a Single Moving Droplet on Graphene/Polytetrafluoroethylene",

abstract = "Recently, several reports have demonstrated that a moving droplet of seawater or ionic solution over monolayer graphene produces an electric power of about 19 nW, and this has been suggested to be a result of the pseudocapacitive effect between graphene and the liquid droplet. Here, we show that the change in the triboelectrification-induced pseudocapacitance between the water droplet and monolayer graphene on polytetrafluoroethylene (PTFE) results in a large power output of about 1.9 μW, which is about 100 times larger than that presented in previous research. During the graphene transfer process, a very strong negative triboelectric potential is generated on the surface of the PTFE. Positive and negative charge accumulation, respectively, occurs on the bottom and the top surfaces of graphene due to the triboelectric potential, and the negative charges that accumulate on the top surface of graphene are driven forward by the moving droplet, charging and discharging at the front and rear of the droplet.",

author = "Kwak, {Sung Soo} and Shisheng Lin and Lee, {Jeong Hwan} and Hanjun Ryu and Kim, {Tae Yun} and Huikai Zhong and Hongsheng Chen and Kim, {Sang Woo}",

note = "Funding Information: This work was financially supported by the Framework of International Cooperation Program managed by National Research Foundation of Korea grant (NRF- 2015K2A2A7056357) funded by the Ministry of Science, ICT & Future Planning and Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20154030200870). Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Kwak, Sung Soo

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AU - Ryu, Hanjun

AU - Kim, Tae Yun

AU - Zhong, Huikai

AU - Chen, Hongsheng

AU - Kim, Sang Woo

N1 - Funding Information: This work was financially supported by the Framework of International Cooperation Program managed by National Research Foundation of Korea grant (NRF- 2015K2A2A7056357) funded by the Ministry of Science, ICT & Future Planning and Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20154030200870). Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/8/23

Y1 - 2016/8/23

N2 - Recently, several reports have demonstrated that a moving droplet of seawater or ionic solution over monolayer graphene produces an electric power of about 19 nW, and this has been suggested to be a result of the pseudocapacitive effect between graphene and the liquid droplet. Here, we show that the change in the triboelectrification-induced pseudocapacitance between the water droplet and monolayer graphene on polytetrafluoroethylene (PTFE) results in a large power output of about 1.9 μW, which is about 100 times larger than that presented in previous research. During the graphene transfer process, a very strong negative triboelectric potential is generated on the surface of the PTFE. Positive and negative charge accumulation, respectively, occurs on the bottom and the top surfaces of graphene due to the triboelectric potential, and the negative charges that accumulate on the top surface of graphene are driven forward by the moving droplet, charging and discharging at the front and rear of the droplet.

AB - Recently, several reports have demonstrated that a moving droplet of seawater or ionic solution over monolayer graphene produces an electric power of about 19 nW, and this has been suggested to be a result of the pseudocapacitive effect between graphene and the liquid droplet. Here, we show that the change in the triboelectrification-induced pseudocapacitance between the water droplet and monolayer graphene on polytetrafluoroethylene (PTFE) results in a large power output of about 1.9 μW, which is about 100 times larger than that presented in previous research. During the graphene transfer process, a very strong negative triboelectric potential is generated on the surface of the PTFE. Positive and negative charge accumulation, respectively, occurs on the bottom and the top surfaces of graphene due to the triboelectric potential, and the negative charges that accumulate on the top surface of graphene are driven forward by the moving droplet, charging and discharging at the front and rear of the droplet.

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Triboelectrification-Induced Large Electric Power Generation from a Single Moving Droplet on Graphene/Polytetrafluoroethylene

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