Effects of Initial Water Content of Membrane on Cold Start Performance of PEMFC

IF 2.6 4区 工程技术 Q3 ELECTROCHEMISTRY Fuel Cells Pub Date : 2025-01-31 DOI:10.1002/fuce.202400196
Yang Lan, Tao Chen, Fei Xiao, Zhongyu Gan, Ruixuan Zhang, Rufeng Zhang
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Abstract

The performance degradation of proton exchange membrane fuel cells (PEMFC) in low-temperature extreme environments is one of the challenges on the way to their commercialization, and it is important to investigate the performance changes of fuel cells in low-temperature environments for their future development. In this paper, the cold-start performance of fuel cells with different initial water content of the membrane and starting modes was compared. Lowering the initial water content of the membrane could enhance the water storage capacity of the cell and improve the cold-starting performance of the cell, but infinitely low initial water content might cause the reverse polarity phenomenon, which would cause serious corrosion and degradation of the membrane electrode assembly (MEA). In constant voltage starting mode, reducing the starting voltage could increase the heat production of the cell, but it would weaken the water storage capacity of the cell. In the constant current starting process, lowering the starting current could improve the water storage capacity of the cell, which was beneficial to the cold start of the cell. It was also found that the MEA with cold start failure had a serious performance degradation, and cold start failure needed to be avoided as much as possible.

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来源期刊
Fuel Cells
Fuel Cells 工程技术-电化学
CiteScore
5.80
自引率
3.60%
发文量
31
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.
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