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Performance-enhanced eco-friendly triboelectric nanogenerator via wettability manipulation of lignin
  • +6
  • Hongseok Jo,
  • Dogun Park,
  • Minkyeong Joo,
  • Daekyu Choi,
  • Jisong Kang,
  • Jeong-Myeong Ha,
  • Kwang Ho Kim,
  • Ki Hyun Kim,
  • Seongpil An
Hongseok Jo
Sungkyunkwan University (SKKU), SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU)
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Dogun Park
Sungkyunkwan University
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Minkyeong Joo
Sungkyunkwan University
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Daekyu Choi
Sungkyunkwan University
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Jisong Kang
Korea Institute of Science and Technology
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Jeong-Myeong Ha
Korea Institute of Science and Technology
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Kwang Ho Kim
Korea Institute of Science and Technology
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Ki Hyun Kim
Sungkyunkwan University (SKKU), School of Pharmacy
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Seongpil An
Sungkyunkwan University

Corresponding Author:[email protected]

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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 (SEM), nuclear magnetic resonance (NMR) spectroscopy, X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) analysis, and atomic force microscopy (AFM), are performed, confirming the mechanical durability, biocompatibility, and industrial viability of lignin-based TENG developed here.
09 Jun 2023Submitted to EcoMat
12 Jun 2023Submission Checks Completed
12 Jun 2023Assigned to Editor
05 Jul 2023Review(s) Completed, Editorial Evaluation Pending
09 Jul 2023Reviewer(s) Assigned
12 Aug 2023Editorial Decision: Revise Minor
01 Sep 20231st Revision Received
01 Sep 2023Submission Checks Completed
01 Sep 2023Assigned to Editor
01 Sep 2023Review(s) Completed, Editorial Evaluation Pending
02 Sep 2023Reviewer(s) Assigned
07 Sep 2023Editorial Decision: Accept