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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
关键词Ftir Diffusion Reflection Atr Gas Diffusion Layers Ptfe
刊名INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2013-06-27
DOI10.1016/j.ijhydene.2013.04.071
38期:19页:7957-7963
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Electrochemistry ; Energy & Fuels
研究领域[WOS]Chemistry ; Electrochemistry ; Energy & Fuels
关键词[WOS]WATER TRANSPORT ; PERFORMANCE ; CATHODE ; DURABILITY ; ELECTRODES
英文摘要Gas 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.
语种英语
WOS记录号WOS:000321407500024
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/137854
专题中国科学院大连化学物理研究所
作者单位1.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
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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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