DICP OpenIR
Application of FTIR in direct methanol fuel cells - Quantitative analysis of PTFE in gas diffusion layers
Jing, Mingyi1,2; Jiang, Luhua1; Wang, Suli1; Jing, Fenning1; Sun, Gongquan1
KeywordFtir Diffusion Reflection Atr Gas Diffusion Layers Ptfe
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2013-06-27
DOI10.1016/j.ijhydene.2013.04.071
Volume38Issue:19Pages:7957-7963
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS KeywordWATER TRANSPORT ; PERFORMANCE ; CATHODE ; DURABILITY ; ELECTRODES
AbstractGas diffusion layers (GDLs) of direct methanol fuel cells (DMFCs), consisting of a microporous layer (MPL) and a back layer (BL), influence the cell performance and stability significantly due to the critical function that the GDL undertook, i.e., distribution of reactants and removal of the products in electrodes. The hydrophilic/hydrophobic properties of the GDLs are required to tailor to the transport/transfer of reactants/products depending on a specific electrode reaction. One important way to adjust the hydrophobic/hydrophilic properties of GDLs is to vary PTFE content in GDLs. In this paper, we employ infrared spectroscopy technique, specifically, diffuse reflection (DR) method and attenuation total reflection (ATR) method, to determine the PTFE content in both MPLs and BLs quantitatively by comparing the measured C-F intensity with the pre-calibrated standard plots. Compared to the ATR method, the DR method takes advantages of sensitivity, wide range and precision. By the DR method, we succeed in observing that PTFE in MPLs migrates to BLs, consistent with the corresponding EDX results for a sample experienced 600 h lifetime test, suggesting DR method an effective approach to determine quantitatively the hydrophilic/hydrophobic properties of both MPLs and BLs. Crown Copyright (c) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Language英语
WOS IDWOS:000321407500024
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/137854
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cell & Battery, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Jing, Mingyi,Jiang, Luhua,Wang, Suli,et al. Application of FTIR in direct methanol fuel cells - Quantitative analysis of PTFE in gas diffusion layers[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2013,38(19):7957-7963.
APA Jing, Mingyi,Jiang, Luhua,Wang, Suli,Jing, Fenning,&Sun, Gongquan.(2013).Application of FTIR in direct methanol fuel cells - Quantitative analysis of PTFE in gas diffusion layers.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,38(19),7957-7963.
MLA Jing, Mingyi,et al."Application of FTIR in direct methanol fuel cells - Quantitative analysis of PTFE in gas diffusion layers".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 38.19(2013):7957-7963.
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