Cho Sumin, Jang Sunmin, La Moonwoo, Yun Yeongcheol, Yu Taekyung, Park Sung Jea, Choi Dongwhi
Department of Mechanical Engineering, Kyung Hee University, 1732 Deogyeong-daero, Yongin, Gyeonggi 17104, Korea.
School of Mechanical Engineering, Korea University of Technology and Education (KOREATECH), Cheonan, Chungnam 31253, Korea.
Materials (Basel). 2020 Feb 15;13(4):872. doi: 10.3390/ma13040872.
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.
近年来，为了替代如煤炭和石油能源等迅速枯竭的能源，可再生能源收集技术得到了积极研究。在这些技术中，通过接触起电运行的摩擦纳米发电机（TENG）因其高可达性、重量轻、高形状适应性和广泛应用而备受关注。发生接触起电现象的接触层的特性应进行调整，以提高TENG的电输出性能。在本研究中，开发了一种便携式压印装置，通过轻松调整聚二甲基硅氧烷（PDMS）接触层的特性，如表面结构的厚度和形态，一步制造TENG。这些特性对于确定电输出性能至关重要。所提出装置的所有部件均采用高强度聚乳酸进行3D打印。因此，它具有重量轻和易于定制的特点，使设计的系统便于携带。此外，制造了具有微结构的定制PDMS接触层的手指敲击驱动TENG，通过简单的与手指敲击运动相关的生物机械能，轻松产生350V的输出电压和30μA的输出电流。
