| Author: | Yang, Yi |
| Title: | Investigation of a triboelectric generator: experiments and modeling |
| Advisors: | Ruan, Haihui (ME) |
| Degree: | M.Sc. |
| Year: | 2020 |
| Subject: | Electric generators -- Design and construction Energy harvesting Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Mechanical Engineering |
| Pages: | ix, 61 pages : color illustrations |
| Language: | English |
| Abstract: | Renewable energy has been becoming a hot topic around the world due to environmental degradation and energy scarcity. Triboelectric generator (TEG), first introduced by Z.L. Wang's group, is one of renewable-energy solutions to convert environmental mechanical energy into electricity. Due to its advantages like low cost, light weight, high efficiency, etc., it has attracted people's eyesight and efforts in the past decade. While many TEGs have been demonstrated in the literature, this work focuses on the fundamental understanding of TEG. The characterization experiments were conducted, and a theoretical model was established to analyze experimental results. These understandings justified the need of surface microstructures to enhance the efficiency of a TEG. In detail, the effects of contact force, frequency, surface morphology, and separation of a basic contact-separation TEG were studied experimentally and the model based on the theory of rough surface contact leads to a relation between contact force and voltage output, which can fit the experimental data. We further studied theoretically the effect of parameters and showed the need of surface microstructures. A prototype with plasma-etched surface indeed lead to a large increase of output voltage, which justified the need of nanostructured surfaces. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 5230.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 1.43 MB | Adobe PDF | View/Open |
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