On the influence of methanol addition on the performances of PEM fuel cells operated at subzero temperatures

被引：7
作者：
Ivanova, Nataliya A. [1 ]
Spasov, Dmitry D. [1 ,2 ]
Grigoriev, Sergey A. [1 ,2 ,3 ]
Kamyshinsky, Roman A. [1 ]
Peters, Georgy S. [1 ]
Mensharapov, Ruslan M. [1 ,4 ]
Seregina, Ekaterina A. [1 ]
Millet, Pierre [5 ]
Fateev, Vladimir N. [1 ]
机构：
[1] Kurchatov Inst, Natl Res Ctr, 1 Akad Kurchatova Sq, Moscow 123182, Russia
[2] Natl Res Univ, Moscow Power Engn Inst, 14 Krasnokazarmennaya St, Moscow 111250, Russia
[3] North West Univ, Fac Engn, HySA Infrastruct Ctr Competence, Private Bag X6001, ZA-2531 Potchefstroom, South Africa
[4] Moscow Inst Phys & Technol, 1 A Kerchenskaya St, Moscow 117303, Russia
[5] Univ Paris Saclay, Inst Chim Mol & Mat Orsay, UMR CNRS 8182, F-91405 Orsay, France
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 34期
基金：
俄罗斯基础研究基金会;
关键词：
PEM fuel Cell; Hydrogen; Subzero temperature; Freeze-thaw cycle; Catalytic layers degradation; Methanol addition; COLD-START; NAFION MEMBRANE; DEGRADATION; POWER;
D O I：
10.1016/j.ijhydene.2020.09.195
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：
The storage and the operation of proton exchange membrane fuel cells (PEM FCs) at subzero temperatures result in the ageing and degradation of membrane-electrode assemblies (MEAs). In this study, we investigated the effect of a freeze-thaw temperature cycles (from ambient down to -80 degrees C) on various properties of PFSA membranes and on the performance level of MEAs. The beneficial effects resulting from the addition of methanol vapor to the hydrogen have been put into evidence. Small angle x-ray scattering (SAXS) data have been measured on membranes swollen with water and water-methanol mixtures, to identify possible microstructure differences. It was found that the addition of methanol tends to increase the ionic resistivity of the membranes but has a protective effect on the catalytic layers during the freeze-thaw cycles. The degradation rate of the catalytic layer was reduced by almost a factor of two as a result of optimal methanol addition. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：18116 / 18127
页数：12
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