Hydrophilicity and hydrophobicity study of catalyst layers in proton exchange membrane fuel cells
Yu, HM; Ziegler, C; Oszcipok, M; Zobel, M; Hebling, C; Yu HM(俞红梅); Yu HM(俞红梅)
KeywordHydrophobicity Hydrophilicity Contact Angle Microstructure Membrane Electrode Assembly
Indexed BySCI
Funding Project301
Contribution Rank2;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectElectrochemistry
WOS Research AreaElectrochemistry
AbstractThe catalyst layer is one of the key components of PEMFCs. As the electrochemical reaction occurs at the three-phase interface of the catalyst layer, it is necessary to investigate the hydrophobicity and/or hydrophilicity properties of catalyst layers, which have a large impact on the water transport and even on the performance of the PEMFC. In this paper, time dependent contact angle measurements and porosity analyses have been performed to characterize the catalyst-coated membranes. For the first time, environmental scanning electron microscopy (ESEM) has been used to measure the hydrophilicity and hydrophobicity in the catalyst layer microstructure. The micro-contact angle distribution is given based on the microstructure. It shows a micro-scale hydrophobicity and hydrophilicity study, especially for an inhomogenous material. By means of conventional time-dependent contact angle measurements, porosity measurements and micro-contact angle measurements by ESEM, the hydrophobicity and hydrophilicity of catalyst-coated membranes have been investigated. Useful information has been gained to assist the understanding of catalyst layers from catalyst-coated membranes. (C) 2005 Elsevier Ltd. All rights reserved.
WOS IDWOS:000234818100008
Citation statistics
Cited Times:73[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorYu HM(俞红梅); Yu HM(俞红梅)
Affiliation1.Fraunhofer Inst Solar Energy Syst, D-79110 Freiburg, Germany
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Yu, HM,Ziegler, C,Oszcipok, M,et al. Hydrophilicity and hydrophobicity study of catalyst layers in proton exchange membrane fuel cells[J]. ELECTROCHIMICA ACTA,2006,51(7):1199-1207.
APA Yu, HM.,Ziegler, C.,Oszcipok, M.,Zobel, M.,Hebling, C.,...&俞红梅.(2006).Hydrophilicity and hydrophobicity study of catalyst layers in proton exchange membrane fuel cells.ELECTROCHIMICA ACTA,51(7),1199-1207.
MLA Yu, HM,et al."Hydrophilicity and hydrophobicity study of catalyst layers in proton exchange membrane fuel cells".ELECTROCHIMICA ACTA 51.7(2006):1199-1207.
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