TY - JOUR
T1 - Autonomous MXene-PVDF actuator for flexible solar trackers
AU - Tu, Shao Bo
AU - Xu, Lujia
AU - El Demellawi, Jehad K.
AU - Liang, Hanfeng
AU - Xu, Xiangming
AU - Lopatin, Sergei
AU - De Wolf, Stefaan
AU - Zhang, Xixiang
AU - Alshareef, Husam N.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR-2016-CRG5-2977
Acknowledgements: 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.
PY - 2020/8/15
Y1 - 2020/8/15
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/665023
UR - https://linkinghub.elsevier.com/retrieve/pii/S2211285520308545
UR - http://www.scopus.com/inward/record.url?scp=85089913712&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2020.105277
DO - 10.1016/j.nanoen.2020.105277
M3 - Article
SN - 2211-2855
VL - 77
SP - 105277
JO - Nano Energy
JF - Nano Energy
ER -