Journal
COMPOSITES PART B-ENGINEERING
Volume 228, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2021.109431
Keywords
Smart textiles; Phase change fibers; Energy conversion; Thermal energy storage; Self-cleaning
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Smart textiles are evolving rapidly with the integration of phase change materials into fibers for instant energy conversion and temperature regulation. This study presents a flexible electro-/photo-driven energy storage polymer fiber with outstanding properties, including high electrical conductivity and electro-/photo-heat conversion efficiency.
Smart textiles have emerged as potential part for wearable devices and protective systems. Integrating phase change materials (PCMs) into stimuli-responsive fibers offers exciting opportunities for smart clothing to realize instant energy conversion/storage and temperature regulation. However, the production of flexible and efficient smart energy storage fiber is still challenging. Here, flexible electro-/photo-driven energy storage polymer fiber with outstanding hydrophobicity and self-cleaning property is fabricated. The smart fiber is prepared by integrating conductive silver nanoflowers and poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) as well as hydrophobic fluorocarbon resin with a facile and novel wet-spun phase change fiber to gain high flexibility, excellent electrical conductivity, high enthalpy, tunable phase change temperature, extra shape stability and outstanding hydrophobicity. The highest elongation of the smart fiber is more than 500% and the enthalpies of the fibers varies from 98.6 to 124.5 J g(-1) according to the adjustable content of phase change materials. The coordination of Ag nanoflowers and PEDOT:PSS enable the fiber outstanding electrical conductivity of 190 S/m(2). The high electrical conductivity, excellent photo capture and good heat dissipation enable the fiber high electro-/photo-heat conversion efficiency (70.1% and 89.0%, respectively). The smart energy storage fiber with integrative properties could be woven into fabrics, providing a new option for smart textiles in wearable and protective systems.
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