Performance-enhanced eco-friendly triboelectric nanogenerator via wettability manipulation of ligninopen access
- Authors
- Jo, H[Jo, Hongseok]; Park, D[Park, Dogun]; Joo, M[Joo, Minkyeong]; Choi, D[Choi, Daekyu]; Kang, JS[Kang, Jisong]; Ha, JM[Ha, Jeong-Myeong]; Kim, KH[Kim, Ki Hyun]; Kim, KH[Kim, Kwang Ho]; An, SP[An, Seongpil]
- Issue Date
- 26-Sep-2023
- Publisher
- WILEY
- Keywords
- eco-friendly triboelectric nanogenerator; electrospinning; energy-harvesting technology; lignin; wettability manipulation
- Citation
- ECOMAT
- Indexed
- SCIE
SCOPUS
- Journal Title
- ECOMAT
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/108602
- DOI
- 10.1002/eom2.12413
- ISSN
- 2567-3173
- Abstract
- Eco-friendly and sustainable energy harvests that can alleviate concerns on the energy crisis and environmental pollution are in demand. Exploiting nature-derived biomaterials is imperative to develop these carbon-neutral energy harvesters. In this study, lignin/polycaprolactone nanofiber (NF)-based triboelectric nanogenerators (TENGs) are fabricated using an electrospinning technique. Nanotextured morphology of electrospun lignin/polycaprolactone NFs and wettability modification of lignin into hydrophilicity can significantly enhance electron transfer between tribopositive and tribonegative materials, resulting in the highest energy-harvesting efficiency in their class. The output voltage of the lignin-based TENG exceeds 95 V despite relatively low tapping force of 9 N and frequency of 9 Hz. Various mechanical and physicochemical characterizations, including scanning electron microscopy, nuclear magnetic resonance spectroscopy, x-ray diffraction analysis, Fourier transform infrared analysis, and atomic force microscopy, are performed, confirming the mechanical durability, biocompatibility, and industrial viability of lignin-based TENG developed here.image Nature-derived lignin/polycaprolactone nanofiber (NF)-based triboelectric nanogenerators (TENGs) are fabricated using an electrospinning technique. The morphology of electrospun NFs and wettability modification of lignin into hydrophilicity enhance electron transfer between tribo-positive and -negative materials. The resulting TENG exhibits a high output voltage exceeding 95 V, despite a low tapping force of 9 N and frequency of 9 Hz.image
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