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

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

作者机构：Department of Biomedical EngineeringCity University of Hong KongHong Kong S.A.R 999077China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2024年第16卷第8期

页      面：382-397页

核心收录：

学科分类：1002[医学-临床医学] 0805[工学-材料科学与工程（可授工学、理学学位）] 100214[医学-肿瘤学] 10[医学] 0702[理学-物理学] 

基　　金：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) Startup Grant of CityU(“Laboratory of Wearable Materials for Healthcare”,Grant No.9380116).CityU PhD Scholarship. 

主　　题：Passive-evaporative cooling MXene Electrospun membrane Wettability gradient Diode 

摘      要：Thermoregulatory textiles,leveraging high-emissivity structural materials,have arisen as a promising candidate for personal cooling management;however,their advancement has been hindered by the underperformed water moisture transportation capacity,which impacts on their thermophysiological comfort.Herein,we designed a wettability-gradient-induced-diode(WGID)membrane achieving by MXene-engineered electrospun technology,which could facilitate heat dissipation and moisture-wicking transportation.As a result,the obtained WGID membrane could obtain a cooling temperature of 1.5℃ in the“drystate,and 7.1℃ in the“wetstate,which was ascribed to its high emissivity of 96.40%in the MIR range,superior thermal conductivity of 0.3349 W m^(-1) K^(-1)(based on radiation-and conduction-controlled mechanisms),and unidirectional moisture transportation property.The proposed design offers an approach for meticulously engineering electrospun membranes with enhanced heat dissipation and moisture transportation,thereby paving the way for developing more efficient and comfortable thermoregulatory textiles in a high-humidity microenvironment.