期刊
JOURNAL OF MEMBRANE SCIENCE
卷 690, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.memsci.2023.122196
关键词
Sulfonated poly (ether ether ketone); Langmuir-Blodgett self-assembly; Proton exchange membrane; High ordered arrangement; Proton conductivity
The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
In proton exchange membrane fuel cell (PEMFC), a sulfonated poly (ether ether ketone) (SPEEK) membrane plays a crucial role in transporting H+ through hydrophilic channels. However, when the proton exchange membrane (PEM) is prepared by solution casting, its randomly connected channels will lead to low proton conductivity in the hydrated state. Herein, The Langmuir-Blodgett (LB) self-assembly process was used to create the ordered and controllable SPEEK membrane at the molecular level. pi-A isotherms are used to determine the subphase, spread amount, and slip speed of LB membranes, and the force of -SO3- and H+ (pH = 2) is calculated to be 39.31 kJ/mol. Well-ordered channels dramatically suppress the membrane water uptake and swelling rate, FPS#1 enhancing three times in the proton conductivity (0.384 S/cm) compared to conventional SPEEK membranes. Highly ordered ultrathin SPEEK membranes with high proton conductivity could offer a practically applicable low-cost, yet high-performance membrane for PEMFC.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据