Cellulose-based superhydrophobic wrinkled paper and electrospinning film as green tribolayer for water wave energy harvesting

No Thumbnail Available
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Degree programme
International Journal of Biological Macromolecules, Volume 234
Water waves are viable low-carbon and renewable sources of power that can be optionally combined with triboelectric nanogeneration (TENG). Herein, we report on the synthesis of a TENG device based on green wrinkled paper tribolayers (W-TENG) assembled in grids (G-TENG) with channels that enable contact-separation modes involving metal balls that roll in phase with the waves. The paper's wrinkle wavelength and amplitude were adjusted by using a crepe blade at a given angle with respect to a drying cylinder, as well as the speed and torque. Polar hierarchical superhydrophobic cellulose micro/nanostructures, proposed as positive tribolayers with enhanced contact area and triboelectric density. The negative (biodegradable) tribolayers were prepared by electrospinning aqueous suspensions of polyvinyl alcohol and poly (ethylene oxide) reinforced with cellulose nanofibers. The charge transfer by the W-TENG reached up to 40 nC in air and retained 27 nC under 85 % relative humidity, ~5 and 7 times higher than those measured in planar TENG counterparts. A G-TENG array charging time (100-μF capacitor) of ~188 s was measured when the voltage of the capacitor raised to ~1.5 V. Overall, we introduce a new, scalable TENG system that is demonstrated for its remarkable ability to harvest blue energy.
| openaire: EC/H2020/788489/EU//BioELCell Funding Information: This work was supported by the National Key Research and Development Program of China ( 2019YFC1905900 ), the National Natural Science Foundation of China ( 31870566 ), the Jinan Innovation Team ( 2021GXRC023 ), and Taishan Scholars Program . OJR and ZD are grateful for the support received from the Canada Excellence Research Chair Program ( CERC-2018-00006 ), the Canada Foundation for Innovation (Project number 38623 ) and the European Research Council (ERC) under the European Union's Horizon 2020 Research and Innovation Program (grant agreement No 788489 ). Publisher Copyright: © 2022
Triboelectric nanogenerator, Water waves, Wrinkled cellulose
Other note
Ding, Z, Tian, Z, Ji, X, Wang, D, Ci, X, Shao, X & Rojas, O J 2023, ' Cellulose-based superhydrophobic wrinkled paper and electrospinning film as green tribolayer for water wave energy harvesting ', International Journal of Biological Macromolecules, vol. 234, 122903 . https://doi.org/10.1016/j.ijbiomac.2022.12.122