Compressive Creep of Polymer Electrolyte Membranes: A Case Study for Electrolyzers

被引：17

作者：

Arthurs, Claire ^{[1
,2
]}

Kusoglu, Ahmet ^{[1
]}

机构：

[1] Lawrence Berkeley Natl Lab, Energy Convers Grp, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

来源：

ACS APPLIED ENERGY MATERIALS | 2021年 / 4卷 / 04期

关键词：

compression; electrolyzer; creep; ionomer; mechanics; hydration; MECHANICAL-PROPERTIES; TEMPERATURE; MORPHOLOGY; DIFFUSION; HYDRATION; NAFION;

D O I：

10.1021/acsaem.0c03024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For proton-exchange membrane (PEM) water electrolyzers to be commercially feasible, PEMs must perform over long lifetimes in liquid environments under compression while maintaining mechanical stability. A hydrated environment, while inherent for operation and conductivity, undermines PEM stability. Mechanical stability of PEMs is commonly characterized in tension, which is not applicable to electrolyzers, wherein PEMs could undergo high pressures. In this study, a compression creep procedure is developed using a custom-designed setup to monitor creep response of hydrated PEMs. Our results show that PEMs exhibit continuous creep response under compression over 24 h, with a dependence on the applied pressure and hydration state.

引用

页码：3249 / 3254

页数：6

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