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*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

22 Citations (Scopus)
21 Downloads (CityUHK Scholars)

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.
Original languageEnglish
Article number159
JournalNano-Micro Letters
Volume16
Issue number1
Online published21 Mar 2024
DOIs
Publication statusPublished - Dec 2024

Funding

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (“Study of Multi-Responsive Shape Memory Polyurethane Nanocomposites Inspired by Natural Fibers”, Grant No. 51673162), and Startup Grant of CityU (“Laboratory of Wearable Materials for Healthcare”, Grant No. 9380116). CityU PhD Scholarship.

Research Keywords

  • Diode
  • Electrospun membrane
  • MXene
  • Passive-evaporative cooling
  • Wettability gradient

Publisher's Copyright Statement

  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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