Chemical aging of sealing gasket of proton exchange membrane fuel cell

IF 2.6 4区工程技术 Q3 ELECTROCHEMISTRY

Fuel Cells Pub Date : 2023-02-19 DOI:10.1002/fuce.202200077

Wenbin Xu, Xu Zhang

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引用次数: 2

Abstract

As the key sealing part of proton exchange membrane fuel cell (PEMFC), the gasket is easily damaged in acidic solution and wet air for a long time in PEMFC, resulting in unsafe and unstable operation of PEMFC. In this paper, the regular solution (RS) and accelerated durability test (ADT) solution in PEMFC were prepared to study the aging damage process of silicone rubber gasket, and the attenuated total reflection Fourier transform infrared spectrometer (ATR-FTIR) was used to analyze the surface changes of gaskets soaked in solutions. The results showed that the weight loss of samples increased with the soaking time in both ADT solution and RS solution, and the damage of samples in ADT solution was faster and more serious than that in RS solution. Meanwhile, the microstructure diagram also indicated that the damage of the samples in ADT solution was more serious than that in the RS solution. The ATR-FTIR analysis results showed that the intensity of characteristic wave peaks of samples at 706, 787, 867, 1006, 1071, 1260, and 2961cm⁻¹ in ADT solution decreased faster than that in RS solution, which was consistent with the results of weight analysis and microstructure analysis.

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质子交换膜燃料电池密封垫的化学老化

作为质子交换膜燃料电池（PEMFC）的关键密封部件，密封垫在PEMFC中长期在酸性溶液和潮湿空气中容易损坏，导致PEMFC运行不安全、不稳定。本文制备了PEMFC中的常规溶液（RS）和加速耐久性试验（ADT）溶液，研究了硅橡胶垫片的老化损伤过程，并使用衰减全反射傅立叶变换红外光谱仪（ATR-FTIR）分析了溶液浸泡后垫片的表面变化。结果表明，样品在ADT溶液和RS溶液中的失重均随浸泡时间的增加而增加，ADT溶液中样品的损伤比RS溶液中样品更快、更严重。同时，微观结构图也表明，样品在ADT溶液中的损伤比在RS溶液中的更严重。ATR‐FTIR分析结果表明，样品在ADT溶液中706、787、867、1006、1071、1260和2961cm−1处的特征波峰强度下降速度快于RS溶液，这与重量分析和微观结构分析结果一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fuel Cells 工程技术-电化学

CiteScore

5.80

自引率

3.60%

发文量

审稿时长

3.7 months

期刊介绍： This journal is only available online from 2011 onwards. Fuel Cells — From Fundamentals to Systems publishes on all aspects of fuel cells, ranging from their molecular basis to their applications in systems such as power plants, road vehicles and power sources in portables. Fuel Cells is a platform for scientific exchange in a diverse interdisciplinary field. All related work in -chemistry- materials science- physics- chemical engineering- electrical engineering- mechanical engineering- is included. Fuel Cells—From Fundamentals to Systems has an International Editorial Board and Editorial Advisory Board, with each Editor being a renowned expert representing a key discipline in the field from either a distinguished academic institution or one of the globally leading companies. Fuel Cells—From Fundamentals to Systems is designed to meet the needs of scientists and engineers who are actively working in the field. Until now, information on materials, stack technology and system approaches has been dispersed over a number of traditional scientific journals dedicated to classical disciplines such as electrochemistry, materials science or power technology. Fuel Cells—From Fundamentals to Systems concentrates on the publication of peer-reviewed original research papers and reviews.