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Park, Young-Bin
Functional Intelligent Materials Lab (FIMLab)
Research Interests
  • Composites
  • Nanocomposites
  • Smart Materials and Structures
  • Carbon Nanomaterials

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Multidimensional wearable self-powered personal thermal management with scalable solar heating and a triboelectric nanogenerator

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Title
Multidimensional wearable self-powered personal thermal management with scalable solar heating and a triboelectric nanogenerator
Author
Hazarika, AnkitaDeka, Biplab K.Kim, Dong ChanJaiswal, Anand P.Seo, JaewooPark, Young-BinKim, JisooPark, Hyung Wook
Issue Date
2022-07
Publisher
ELSEVIER
Citation
NANO ENERGY, v.98, pp.107323
Abstract
Global climate change is increasing the frequency of cold events, which can threaten health and enhance the demand for energy, inhibiting the society to prosper in a sustainable way. Having sun as the heat and body radiation as warmth preservation source, the need to save energy is mitigated through personal thermal man-agement (PTM). Herein, we report a self-powered woven Kevlar fiber (WKF)-based flexible PTM device with a porous Ag@MoxFe1-xSe nanostructure (NS) between a substrate of WKF and Ti3C2 MXene film dispersed in polydimethylsiloxane (PDMS). Effective thermotherapeutic ability is demonstrated by the composite (80 degrees C at 3 V through Joule heating). The porous NS between the WKF and MXene/PDMS layers selectively reflected mid-infrared radiation (97.4%) and absorbed UV-vis-NIR (87.1%). The PTM increased the silicone heater temper-ature by 10 degrees C in an indoor setting; in direct sunlight, it raised the heater temperature by 20 degrees C demonstrating its passive and solar heating-mode. The fabricated device harvests energy from human body movements and simulated raindrops, exhibiting high self-powered heating efficiency and has a maximum power density of 1.5 mW cm(-2) at low frequency (5 Hz). The WKF/Ag@MoxFe1-xSe/MXene/PDMS displayed high tensile strength, excellent breathability and durability. This work demonstrates the advantages of this multifunctional energy-reducing device addressing the world energy crisis, which is effective both indoors and outdoors in cold cli-mates, and in sunny and rainy weather.
URI
https://scholarworks.unist.ac.kr/handle/201301/58978
URL
https://www.sciencedirect.com/science/article/pii/S2211285522004013?via%3Dihub
DOI
10.1016/j.nanoen.2022.107323
ISSN
2211-2855
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