Wettability Gradient-Induced Diode: MXene-Engineered Membrane for Passive-Evaporative Cooling

Leqi Lei; Shuo Meng; Yifan Si; Shuo Shi; Hanbai Wu; Jieqiong Yang; Jinlian Hu

doi:10.1007/s40820-024-01359-8

Author(s)

Yifan Si
Jinlian Hu

Related Research Unit(s)

Department of Biomedical Engineering

Detail(s)

Original language	English
Article number	159
Journal / Publication	Nano-Micro Letters
Volume	16
Issue number	1
Online published	21 Mar 2024
Publication status	Online published - 21 Mar 2024

Link(s)

DOI	DOI https://doi.org/10.1007/s40820-024-01359-8 Final Published version
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Attachment(s)	Documents 229084936.pdf Final Published version, 3.81 MB, PDF Publisher's Copyright Statement This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85188281935&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(7b8c0949-dc34-4150-a3e4-f52652e8cba6).html

Abstract

Engineering MXene into electrospun nanofibers can effectively enhance its thermal emissivity and conductance, and the unidirectional water transport of the wettability-gradient-induced-diode (WGID) membrane displayed diode-like properties with wettability gradient by tailoring the water contact angle of each single layer. The WGID membrane could achieve a cooling temperature of 1.5 °C in the “dry” state, and 7.1 °C in the “wet” state, with high emissivity of 96.40% in the MIR range, superior thermal conductivity of 0.3349 W m⁻¹ K⁻¹. Zero-energy-consumption for personal cooling management via multiple heat dissipation pathways, including thermal radiation, conduction, and evaporation. © The Author(s) 2024.