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A study of Flexible Material-based Triboelectric Nanogenerators for Self-powered Systems

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Author(s)
김다은
Issued Date
2022
Abstract
최근 웨어러블 디바이스의 사용과 친환경 에너지의 수요가 증가하면서 경제적으로 에너지를 수확할 수 있는 triboelectric nanogenerator (TENG)에 대한 연구가 많이 진행되고 있다. 본 논문에서는 주변에서 쉽게 구할 수 있는 재료를 사용하여 간단하게 제작할 수 있고 이를 다양한 분야에서 응용 가능한 flexible material 기반 나노발전기를 제안하였다. 특히 반복적인 외력 및 비틀거나 구부리는 변형에도 효율적으로 에너지를 생성할 수 있는 내구성 향상을 위한 방법을 제시하였다. 이를 위해, 본 논문에서는 flexible material 중 paper와 textile을 기반으로 한 TENG를 제작하고 물리적, 전기적 특성을 측정하여 각 parameter의 영향을 분석하였다. 제작된 소자는 상단과 하단의 마찰전기 대전체의 접촉-분리 과정에 의해 최대 572 mW/m2의 전력을 생성하고, 접을수록 마찰 단면적이 넓어져 전기적 출력이 증가한다. 또한, 5000 사이클의 반복적인 푸싱 모션에도 출력 저하 없이 뛰어난 내구성을 나타내었고, 외부 전원 없이 제작된 소자의 출력만으로 전자시계판과 발광 다이오드의 작동을 성공적으로 시연하였다. 따라서 개발된 나노발전기는 소형 전자기기의 지속 가능하고 유망한 친환경 에너지원으로 활용될 것으로 기대되며, 향후 e-textile 및 self-powered electronics에서 실질적으로 적용 가능한 textile 기반 전원을 제공할 수 있을 것으로 기대된다.|Recently, as the use of wearable devices and the demand for eco-friendly energy have increased, many studies have been conducted on triboelectric nanogenerators (TENGs), which can economically harvest energy. In this paper, we proposed a flexible material-based nanogenerator that can be easily fabricated using readily available materials and can be applied in various fields. In particular, a method for improving durability that can efficiently generate energy in spite of repeated external force and twisting or bending deformation was presented. To this end, in this paper, TENG based on paper and textile among flexible materials was fabricated and the effects of each parameter were analyzed by measuring the physical and electrical properties. The fabricated device generates power of up to 572 mW/m2 by the contact-separation process of the triboelectric electrified body at the top and bottom, and as it folds, the friction cross-sectional area becomes wider, increasing the electrical output. In addition, it exhibits excellent durability without degrading output even in the repetitive pushing motion of 5000 cycles. In addition, we successfully demonstrated the operation of the electronic clock panel and the light emitting diode only with the output of the manufactured device without an external power source. Therefore, the developed nanogenerator is expected to be used as a sustainable and promising eco-friendly energy source for small electronic devices, and is expected to provide a textile-based power source that can be practically applied in e-textile and self-powered electronics in the future.
Alternative Title
자가 발전 시스템을 위한 유연성 소재 기반 마찰전기 나노제너레이터에 관한 연구
Alternative Author(s)
Kim Da Eun
Affiliation
조선대학교 일반대학원
Department
일반대학원 IT융합학과
Advisor
김윤태
Awarded Date
2022-08
Table Of Contents
TTable of Contents i
List of Figures iii
List of Table vi
Acronyms vii
Abstract(Korean) viii

I. Introduction 1
1.1. Research Background 1
1.1.1. Triboelectric nanogenerators 1
1.1.2. Paper based triboelectric nanogenerators 4
1.1.3. Textile based triboelectric nanogenerators 5
1.1.4. Outline of this dissertation 7

II. Flexible sandwich-structured foldable triboelectric nanogenerator 10
2.1. Experimental details 10
2.1.1. Fabrication of the foldable paper based TENG 10
2.2. Results and discussion 12
2.2.1. Working mechanism 12
2.2.2. Output performance and stability 13
2.2.3. Practical application 17

III. Fully Stretchable Sandwich Structured Textile-based Triboelectric Nanogenerator 19
3.1. Experimental details 19
3.1.1. Fabrication of the sandwich-sandwich textile based TENG 19
3.2. Results and discussion 21
3.2.1. Output performance 21
3.2.2. Stability 24
3.2.3. Practical application 25

IV. Conclusion 26

References 28

List of Publications 32

Abstract(English) 35
Degree
Master
Publisher
조선대학교 대학원
Citation
김다은. (2022). A study of Flexible Material-based Triboelectric Nanogenerators for Self-powered Systems.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/17453
http://chosun.dcollection.net/common/orgView/200000623883
Appears in Collections:
General Graduate School > 3. Theses(Master)
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