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    Autonomous MXene-PVDF actuator for flexible solar trackers

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    Name:
    auntonomous.pdf
    Size:
    1.830Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2022-08-29
    Download
    Type
    Article
    Authors
    Tu, Shao Bo cc
    Xu, Lujia cc
    El Demellawi, Jehad K. cc
    Liang, Hanfeng cc
    Xu, Xiangming
    Lopatin, Sergei
    De Wolf, Stefaan cc
    Zhang, Xixiang cc
    Alshareef, Husam N. cc
    KAUST Department
    Electron Microscopy
    Functional Nanomaterials and Devices Research Group
    KAUST Solar Center (KSC)
    Material Science and Engineering
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    OSR-2016-CRG5-2977
    Date
    2020-08-15
    Online Publication Date
    2020-08-15
    Print Publication Date
    2020-11
    Embargo End Date
    2022-08-29
    Submitted Date
    2020-06-28
    Permanent link to this record
    http://hdl.handle.net/10754/665023
    
    Metadata
    Show full item record
    Abstract
    We report a novel flexible solar tracking system based on a photothermal-thermomechanical (PT-TM) actuator comprised of Ti3C2Tx MXene and polyvinylidene fluoride (PVDF) bilayer. The actuation function of the proposed device originates from photothermal and surface plasmon-assisted effects in MXenes, coupled with thermomechanical deformation of in-plane aligned PVDF polymer. Two types of solar tracking modes are evaluated based on the experimental deformation behavior of the PT-TM actuator. We find that the uniaxial East-West solar tracking option increases the overall energy intensity reaching the solar module by over 30%, in comparison with the optimized tilting-controlled mode. We also demonstrate the thermally driven self-oscillation of the MXene-PVDF device, which may have promising potential for optically and thermally driven soft robotics. The PT-TM actuator devices display robust mechanical strength and durability, with no noticeable degradation in their performance after more than 1000 cycles.
    Citation
    Tu, S., Xu, L., El-Demellawi, J. K., Liang, H., Xu, X., Lopatin, S., … Alshareef, H. N. (2020). Autonomous MXene-PVDF actuator for flexible solar trackers. Nano Energy, 77, 105277. doi:10.1016/j.nanoen.2020.105277
    Sponsors
    We acknowledge funding support by King Abdullah University of Science and Technology (KAUST) and Office of Sponsored Research (OSR) under Award No. OSR-2016-CRG5-2977. S.T. X.Z. and H.A. conceived the idea. S.T. designed the experiments. S.T. J.K.D. H.F.L. X.M.X, and S.L. performed materials fabrication and characterizations. L.X. and S.D.W. conducted simulation. S.T. L.X. and J.K.D. wrote the paper. The authors would like to appreciate the helpful discussion of Dr. Keith Mclntosh from PVlighthouse. All authors contributed to paper revision.
    Publisher
    Elsevier BV
    Journal
    Nano Energy
    DOI
    10.1016/j.nanoen.2020.105277
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S2211285520308545
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.nanoen.2020.105277
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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