Direct-laser-patterned friction layer for the output enhancement of a triboelectric nanogenerator

Kim, Daewon; Tcho, Il‐Woong; Jin, Ik Kyeong; Park, Sang-Jae; Jeon, Seungwon; Kim, Weon‐Guk; Cho, Han-Saem; Lee, Heung-Soon; Jeoung, Sae Chae; Choi, Yang‐Kyu

doi:10.1016/j.nanoen.2017.04.013

Cited by 96 publications

(56 citation statements)

References 41 publications

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“…These structures mainly contribute to enlargement of effective contact area, resulting in the enhancement of the output performance. For example, the hierarchical microstructure fabricated by ultrafast laser, as shown in Figure 3(a), resulted in the contact-area increment between friction layers, thereby increasing the output performance of the triboelectric energy harvesters [91]. Compared to the triboelectric energy harvester based on pristine polydimethylsiloxane (PDMS), the triboelectric energy harvester based on micro-structured PDMS exhibited at least two times larger output power density.…”

Section: Principle Of Triboelectric Energy Harvestingmentioning

confidence: 99%

Modulation of surface physics and chemistry in triboelectric energy harvesting technologies

Lee

Kim

Park

et al. 2019

Science and Technology of Advanced Materials

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Mechanical energy harvesting technology converting mechanical energy wasted in our surroundings to electrical energy has been regarded as one of the critical technologies for self-powered sensor network and Internet of Things (IoT). Although triboelectric energy harvesters based on contact electrification have attracted considerable attention due to their various advantages compared to other technologies, a further improvement of the output performance is still required for practical applications in next-generation IoT devices. In recent years, numerous studies have been carried out to enhance the output power of triboelectric energy harvesters. The previous research approaches for enhancing the triboelectric charges can be classified into three categories: i) materials type, ii) device structure, and iii) surface modification. In this review article, we focus on various mechanisms and methods through the surface modification beyond the limitations of structural parameters and materials, such as surficial texturing/patterning, functionalization, dielectric engineering, surface charge doping and 2D material processing. This perspective study is a cornerstone for establishing next-generation energy applications consisting of triboelectric energy harvesters from portable devices to power industries.

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Section: Principle Of Triboelectric Energy Harvestingmentioning

confidence: 99%

Modulation of surface physics and chemistry in triboelectric energy harvesting technologies

Lee

Kim

Park

et al. 2019

Science and Technology of Advanced Materials

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“…In addition, cost-effectiveness, simple fabrication with material selection diversity, high shape adaptability, and high accessibility are emphasized as the other advantageous features of TENG [19][20][21][22][23][24]. Since the first proposal of TENG, much effort has been made to increase its electrical output performance by using various strategies [25][26][27][28][29][30]. The fundamental operation mechanism of TENG is based on repetitive contact and separation of contact layers.…”

Section: Introductionmentioning

confidence: 99%

Facile Tailoring of Contact Layer Characteristics of the Triboelectric Nanogenerator Based on Portable Imprinting Device

Cho

Jang

et al. 2020

Materials

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Renewable energy harvesting technologies have been actively studied in recent years for replacing rapidly depleting energies, such as coal and oil energy. Among these technologies, the triboelectric nanogenerator (TENG), which is operated by contact-electrification, is attracting close attention due to its high accessibility, light weight, high shape adaptability, and broad applications. The characteristics of the contact layer, where contact electrification phenomenon occurs, should be tailored to enhance the electrical output performance of TENG. In this study, a portable imprinting device is developed to fabricate TENG in one step by easily tailoring the characteristics of the polydimethylsiloxane (PDMS) contact layer, such as thickness and morphology of the surface structure. These characteristics are critical to determine the electrical output performance. All parts of the proposed device are 3D printed with high-strength polylactic acid. Thus, it has lightweight and easy customizable characteristics, which make the designed system portable. Furthermore, the finger tapping-driven TENG of tailored PDMS contact layer with microstructures is fabricated and easily generates 350 V of output voltage and 30 μA of output current with a simple finger tapping motion-related biomechanical energy.

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“…However, many other effective TENG polymeric materials are in solid state in the market. A special laser irradiation machine were used to direct pattering of TENG friction layers working on a fast speed and the surface of PDMS were modified by this method . Aligned carbon nanotubes (CNT) were also integrated with the TENG contact surfaces using multiple fabrication steps .…”

Section: Introductionmentioning

confidence: 99%

High Performance Triboelectric Nanogenerator by Hot Embossing on Self‐Assembled Micro‐Particles

2018

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Triboelectric nanogenerator (TENG) is a novel technology for energy harvesting and active sensing which shows a great potential toward extracting the ambient kinetic energy. The surface morphology of triboelectric layers is one of the most important elements for enhancing the output of TENG devices. Current surface modification methods mostly require complicated, long term, size limited, and costly processes. This paper presents a cost effective, facile, repeatable, and fast method for large scale surface modification of triboelectric layers which significantly enhance the performance of TENG devices. This method simply utilizes the hot-embossing of polymers on self-assembled micro-particles to create semi-ordered micro-sized structures on the surfaces. The modified surfaces increase the output performance of the TENG such as open circuit voltage and short circuit current for more than four times. As the presence of water degrades the output of TENG, this technique is very beneficial to remarkably improve the hydrophobicity of the contact layers. The proposed method can be applied to a variety of polymers with an area scalable fabrication toward the use of TENG in real world industrial applications.

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Direct-laser-patterned friction layer for the output enhancement of a triboelectric nanogenerator

Cited by 96 publications

References 41 publications

Modulation of surface physics and chemistry in triboelectric energy harvesting technologies

Modulation of surface physics and chemistry in triboelectric energy harvesting technologies

Facile Tailoring of Contact Layer Characteristics of the Triboelectric Nanogenerator Based on Portable Imprinting Device

High Performance Triboelectric Nanogenerator by Hot Embossing on Self‐Assembled Micro‐Particles

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