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Article

Increased Interfacial Area between Dielectric Layer and Electrode of Triboelectric Nanogenerator toward Robustness and Boosted Energy Output

1
Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk 790-784, Korea
2
Department of Mechanical Engineering, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea
3
Agency for Defense Development (ADD), Yuseong, Daejeon 305-600, Korea
4
Department of Electronic and Electrical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk 790-784, Korea
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(1), 71; https://doi.org/10.3390/nano9010071
Received: 30 November 2018 / Revised: 27 December 2018 / Accepted: 28 December 2018 / Published: 6 January 2019
(This article belongs to the Special Issue Smart Nanogenerators)
Given the operation conditions wherein mechanical wear is inevitable, modifying bulk properties of the dielectric layer of a triboelectric nanogenerator (TENG) has been highlighted to boost its energy output. However, several concerns still remain in regards to the modification due to high-cost materials and cumbersome processes being required. Herein, we report TENG with a microstructured Al electrode (TENG_ME) as a new approach to modifying bulk properties of the dielectric layer. The microstructured Al electrode is utilized as a component of TENG to increase the interfacial area between the dielectric layer and electrode. Compared to the TENG with a flat Al electrode (TENG_F), the capacitance of TENG_ME is about 1.15 times higher than that of TENG_F, and the corresponding energy outputs of a TENG_ME are 117 μA and 71 V, each of which is over 1.2 times higher than that of the TENG_F. The robustness of TENG_ME is also confirmed in the measurement of energy outputs changing after sandpaper abrasion tests, repetitive contact, and separation (more than 105 cycles). The results imply that the robustness and long-lasting performance of the TENG_ME could be enough to apply in reliable auxiliary power sources for electronic devices. View Full-Text
Keywords: robust triboelectric nanogenerator; increased interfacial area; microstructured Al electrode by wet etching in HCl; long-lasting performance robust triboelectric nanogenerator; increased interfacial area; microstructured Al electrode by wet etching in HCl; long-lasting performance
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MDPI and ACS Style

Yoo, D.; Go, E.Y.; Choi, D.; Lee, J.-W.; Song, I.; Sim, J.-Y.; Hwang, W.; Kim, D.S. Increased Interfacial Area between Dielectric Layer and Electrode of Triboelectric Nanogenerator toward Robustness and Boosted Energy Output. Nanomaterials 2019, 9, 71. https://doi.org/10.3390/nano9010071

AMA Style

Yoo D, Go EY, Choi D, Lee J-W, Song I, Sim J-Y, Hwang W, Kim DS. Increased Interfacial Area between Dielectric Layer and Electrode of Triboelectric Nanogenerator toward Robustness and Boosted Energy Output. Nanomaterials. 2019; 9(1):71. https://doi.org/10.3390/nano9010071

Chicago/Turabian Style

Yoo, Donghyeon, Eun Y. Go, Dongwhi Choi, Jeong-Won Lee, Insang Song, Jae-Yoon Sim, Woonbong Hwang, and Dong S. Kim 2019. "Increased Interfacial Area between Dielectric Layer and Electrode of Triboelectric Nanogenerator toward Robustness and Boosted Energy Output" Nanomaterials 9, no. 1: 71. https://doi.org/10.3390/nano9010071

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