The highly flexible electrode for wearable triboelectric nanogenerators

Hee Jae Hwang; Dongseop Kim; Dukhyun Choi

doi:10.1007/978-981-32-9437-0_37

The highly flexible electrode for wearable triboelectric nanogenerators

Hee Jae Hwang, Dongseop Kim, Dukhyun Choi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Here, we introduced thin and foldable porous reduced graphene oxide (rGO) fabricated by a solvent casting method (SC-rGO). The SC-rGO was superior to aluminum as a positive triboelectric material in triboelectric nanogenerators (TENGs), resulting in more than 2 times enhanced performance. They showed extremely foldable features and could be folded by 1/16 size. The electrical and morphological properties of SC-rGO were investigated for different thicknesses (5 μm to 30 μm). A 30 μm thick TENG with a non-annealed SC-rGO film (STENG) showed the highest output of about 255 μW/cm² due to its high carrier concentration, low work function, and high surface area. After annealing, STENG performance was optimized for a 10 μm thick SC-rGO because their work functions decreased, but the corresponding carrier concentrations also decreased according to the thickness of the SC-rGO films. Our SC-rGO films are highly durable and sustainable, where their output and conductivity showed only negligible changes after 100,000 cycles of mechanical deformation. We fabricated a large SC-rGO with a size of 13 × 3 cm² and attached it inside a person’s arm to demonstrate the shape-adaptive characteristics. We obtained 170 V and turned on 19 green light emitting diodes (LEDs) by simply touching the STENG.

Original language	English
Title of host publication	Proceedings of the 7th Asia International Symposium on Mechatronics - Volume I
Editors	Baoyan Duan, Kazunori Umeda, Woonbong Hwang
Publisher	Springer Verlag
Pages	341-345
Number of pages	5
ISBN (Print)	9789813294363
DOIs	https://doi.org/10.1007/978-981-32-9437-0_37
State	Published - 2020
Externally published	Yes
Event	7th Asia International Symposium on Mechatronics, AISM 2019 - Hangzhou, China Duration: 19 Sep 2019 → 22 Sep 2019

Publication series

Name	Lecture Notes in Electrical Engineering
Volume	588
ISSN (Print)	1876-1100
ISSN (Electronic)	1876-1119

Conference

Conference	7th Asia International Symposium on Mechatronics, AISM 2019
Country/Territory	China
City	Hangzhou
Period	19/09/19 → 22/09/19

Keywords

Foldable
Porous
Reduced graphene oxide
Shape-adaptive
Triboelectric nanogenerator

Access to Document

10.1007/978-981-32-9437-0_37

Cite this

@inproceedings{25e507cc7d2f4fe49fc6141d6d48eb9a,

title = "The highly flexible electrode for wearable triboelectric nanogenerators",

abstract = "Here, we introduced thin and foldable porous reduced graphene oxide (rGO) fabricated by a solvent casting method (SC-rGO). The SC-rGO was superior to aluminum as a positive triboelectric material in triboelectric nanogenerators (TENGs), resulting in more than 2 times enhanced performance. They showed extremely foldable features and could be folded by 1/16 size. The electrical and morphological properties of SC-rGO were investigated for different thicknesses (5 μm to 30 μm). A 30 μm thick TENG with a non-annealed SC-rGO film (STENG) showed the highest output of about 255 μW/cm2 due to its high carrier concentration, low work function, and high surface area. After annealing, STENG performance was optimized for a 10 μm thick SC-rGO because their work functions decreased, but the corresponding carrier concentrations also decreased according to the thickness of the SC-rGO films. Our SC-rGO films are highly durable and sustainable, where their output and conductivity showed only negligible changes after 100,000 cycles of mechanical deformation. We fabricated a large SC-rGO with a size of 13 × 3 cm2 and attached it inside a person{\textquoteright}s arm to demonstrate the shape-adaptive characteristics. We obtained 170 V and turned on 19 green light emitting diodes (LEDs) by simply touching the STENG.",

keywords = "Foldable, Porous, Reduced graphene oxide, Shape-adaptive, Triboelectric nanogenerator",

author = "Hwang, \{Hee Jae\} and Dongseop Kim and Dukhyun Choi",

note = "Publisher Copyright: {\textcopyright} Science Press 2020.; 7th Asia International Symposium on Mechatronics, AISM 2019 ; Conference date: 19-09-2019 Through 22-09-2019",

year = "2020",

doi = "10.1007/978-981-32-9437-0\_37",

language = "English",

isbn = "9789813294363",

series = "Lecture Notes in Electrical Engineering",

publisher = "Springer Verlag",

pages = "341--345",

editor = "Baoyan Duan and Kazunori Umeda and Woonbong Hwang",

booktitle = "Proceedings of the 7th Asia International Symposium on Mechatronics - Volume I",

}

Hwang, HJ, Kim, D & Choi, D 2020, The highly flexible electrode for wearable triboelectric nanogenerators. in B Duan, K Umeda & W Hwang (eds), Proceedings of the 7th Asia International Symposium on Mechatronics - Volume I. Lecture Notes in Electrical Engineering, vol. 588, Springer Verlag, pp. 341-345, 7th Asia International Symposium on Mechatronics, AISM 2019, Hangzhou, China, 19/09/19. https://doi.org/10.1007/978-981-32-9437-0_37

The highly flexible electrode for wearable triboelectric nanogenerators. / Hwang, Hee Jae; Kim, Dongseop; Choi, Dukhyun.
Proceedings of the 7th Asia International Symposium on Mechatronics - Volume I. ed. / Baoyan Duan; Kazunori Umeda; Woonbong Hwang. Springer Verlag, 2020. p. 341-345 (Lecture Notes in Electrical Engineering; Vol. 588).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - The highly flexible electrode for wearable triboelectric nanogenerators

AU - Hwang, Hee Jae

AU - Kim, Dongseop

AU - Choi, Dukhyun

N1 - Publisher Copyright: © Science Press 2020.

PY - 2020

Y1 - 2020

N2 - Here, we introduced thin and foldable porous reduced graphene oxide (rGO) fabricated by a solvent casting method (SC-rGO). The SC-rGO was superior to aluminum as a positive triboelectric material in triboelectric nanogenerators (TENGs), resulting in more than 2 times enhanced performance. They showed extremely foldable features and could be folded by 1/16 size. The electrical and morphological properties of SC-rGO were investigated for different thicknesses (5 μm to 30 μm). A 30 μm thick TENG with a non-annealed SC-rGO film (STENG) showed the highest output of about 255 μW/cm2 due to its high carrier concentration, low work function, and high surface area. After annealing, STENG performance was optimized for a 10 μm thick SC-rGO because their work functions decreased, but the corresponding carrier concentrations also decreased according to the thickness of the SC-rGO films. Our SC-rGO films are highly durable and sustainable, where their output and conductivity showed only negligible changes after 100,000 cycles of mechanical deformation. We fabricated a large SC-rGO with a size of 13 × 3 cm2 and attached it inside a person’s arm to demonstrate the shape-adaptive characteristics. We obtained 170 V and turned on 19 green light emitting diodes (LEDs) by simply touching the STENG.

AB - Here, we introduced thin and foldable porous reduced graphene oxide (rGO) fabricated by a solvent casting method (SC-rGO). The SC-rGO was superior to aluminum as a positive triboelectric material in triboelectric nanogenerators (TENGs), resulting in more than 2 times enhanced performance. They showed extremely foldable features and could be folded by 1/16 size. The electrical and morphological properties of SC-rGO were investigated for different thicknesses (5 μm to 30 μm). A 30 μm thick TENG with a non-annealed SC-rGO film (STENG) showed the highest output of about 255 μW/cm2 due to its high carrier concentration, low work function, and high surface area. After annealing, STENG performance was optimized for a 10 μm thick SC-rGO because their work functions decreased, but the corresponding carrier concentrations also decreased according to the thickness of the SC-rGO films. Our SC-rGO films are highly durable and sustainable, where their output and conductivity showed only negligible changes after 100,000 cycles of mechanical deformation. We fabricated a large SC-rGO with a size of 13 × 3 cm2 and attached it inside a person’s arm to demonstrate the shape-adaptive characteristics. We obtained 170 V and turned on 19 green light emitting diodes (LEDs) by simply touching the STENG.

KW - Foldable

KW - Porous

KW - Reduced graphene oxide

KW - Shape-adaptive

KW - Triboelectric nanogenerator

UR - https://www.scopus.com/pages/publications/85072819185

U2 - 10.1007/978-981-32-9437-0_37

DO - 10.1007/978-981-32-9437-0_37

M3 - Conference contribution

AN - SCOPUS:85072819185

SN - 9789813294363

T3 - Lecture Notes in Electrical Engineering

SP - 341

EP - 345

BT - Proceedings of the 7th Asia International Symposium on Mechatronics - Volume I

A2 - Duan, Baoyan

A2 - Umeda, Kazunori

A2 - Hwang, Woonbong

PB - Springer Verlag

T2 - 7th Asia International Symposium on Mechatronics, AISM 2019

Y2 - 19 September 2019 through 22 September 2019

ER -

The highly flexible electrode for wearable triboelectric nanogenerators

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Keywords

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