A Highly Porous Nonwoven Thermoplastic Polyurethane/Polypropylene-Based Triboelectric Nanogenerator for Energy Harvesting by Human Walkingopen access
- Authors
- Oh, Hyun Ju; Bae, Jong Hyuk; Park, Young Ki; Song, Jinkyu; Kim, Do Kun; Lee, Woosung; Kim, Minhee; Heo, Ki Joon; Kim, Yoonjin; Kim, Seong Hun; Yeang, Byeong Jin; Lim, Seung Ju
- Issue Date
- May-2020
- Publisher
- MDPI
- Keywords
- polypropylene; thermoplastic polyurethane; nanofiber; porous nonwoven; mass production; spacer-free; breathable; triboelectric nanogenerator
- Citation
- POLYMERS, v.12, no.5, pp.1 - 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMERS
- Volume
- 12
- Number
- 5
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/3256
- DOI
- 10.3390/polym12051044
- ISSN
- 2073-4360
- Abstract
- A highly porous nonwoven thermoplastic polyurethane (TPU)/Polypropylene (PP) triboelectric nanogenerator (N-TENG) was developed. To fabricate the triboelectric layers, the TPU nanofiber was directly electrospun onto the nonwoven PP at different basis weights (15, 30, and 50 g/m2). The surface morphologies and porosities of the nonwoven PP and TPU nanofiber mats were characterized by field-emission scanning electron microscopy and porosimetry. The triboelectric performance of the nonwoven TPU/PP based TENG was found to improve with an increase in the basis weight of nonwoven PP. The maximum output voltage and current of the TPU/PP N-TENG with 50% PP basis weight reached 110.18 +/- 6.06 V and 7.28 +/- 0.67 mu A, respectively, due to high air volume of nonwoven without spacers. In order to demonstrate its practical application as a generator, a TPU/PP N-TENG-attached insole for footwear was fabricated. The N-TENG was used as a power source to turn on 57 light-emitting diodes through human-walking, without any charging system. Thus, owing to its excellent energy-conversion performance, simple fabrication process, and low cost, the breathable and wearable nonwoven fiber-based TENG is suitable for large-scale production, to be used in wearable devices.
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