文献类型：期刊文献

英文题名：TPU-PAN Hollow Fiber Membranes With High Elasticity Performance Fabricated for Dynamic Air Humidification

作者：Xu, Jian-Xiong[1];Han, Rui[1];Xu, Zhen-Liang[1,2];Xu, Sun-Ji[1,2,3];Cheng, Liang[1,2];Su, Ye-Heng[1];Sun, Zi-Qi[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, Membrane Sci & Engn R&D Lab, Sch Chem Engn,State Key Lab Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Elect Chem Innovat Inst, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China

年份：2026

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20263121219923);Scopus(收录号：2-s2.0-105046168936);WOS:【SCI-EXPANDED(收录号:WOS:001835560300001)】；

基金：This work was supported by the National Natural Science Foundation of China (22078092, 22208101, and 21176067) and Basic Research Plan of Science and Technology Commission of Shanghai Municipality (25JD1404900).

语种：英文

外文关键词：hollow fiber membrane; membrane humidifier; polyacrylonitrile; thermoplastic polyurethane

摘要：Efficient water management is critical for the performance and longevity of proton exchange membrane fuel cells (PEMFCs). Pressure fluctuations in the humidifier during dynamic load changes can considerably reduce the lifespan of membrane materials, and traditional strength-based approaches have inherent limitations in addressing this challenge. In this study, an elasticity-over-strength (EOS) design concept is introduced, and a hollow fiber humidification membrane with superior elasticity and stability is fabricated by blending thermoplastic polyurethane (TPU) with polyacrylonitrile (PAN) through nonsolvent-induced phase separation (NIPS). The optimized T12P8 membrane achieves a water vapor permeation flux of 1280 g m-2 h-1 at 80 degrees C under -10 kPa transmembrane pressure difference, along with an elongation at break of 1090% and high elastic recovery upon unloading. An accelerated 63-h cyclic durability test confirms its exceptional operational stability. This work not only offers an innovative material solution to the dynamic fatigue challenge in fuel cell humidifiers but also demonstrates the broader potential of elastic design strategies for energy devices operating in highly dynamic environments.