Operando mu-Raman study of the actual water content of perfluorosulfonic acid membranes in the fuel cell

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	Operando mu-Raman study of the actual water content of perfluorosulfonic acid membranes in the fuel cell
	Peng, Zhe; Badets, Vasilica; Huguet, Patrice; Morin, Arnaud; Schott, Pascal; Thi Bich Hue Tran; Porozhnyy, Mikhael; Nikonenko, Victor; Deabate, Stefano
刊名	JOURNAL OF POWER SOURCES
	2017
卷号	356 页码:200-211
ISSN号	0378-7753
英文摘要	Operando mu-Raman spectroscopy is used to probe the water distribution across Nafion (R) and Aquivion (TM) membranes in the operating fuel cell. The through-plane water concentration profile is obtained with Am resolution at the middle of the active surface, both at the gas distribution channel and at the under-lands areas. Depth-resolved measurements carried out at room temperature show that the water content of both membranes increases with the increase of the feed gas relative humidity and decreases with the increase of stoichiometry. At given relative humidity and stoichiometry conditions, the water content first increases at the fuel cell start-up and, then, decreases progressively with the increase of the current density delivered by the cell. The water loss is due to the concomitant rise of pressure drops and of the cell inner temperature, the latter giving the larger contribution. Pressure drops are related to the increase of the feed gases fluxes while temperature rise is due to increasing ohmic losses and heat from the electrochemical reaction. Compared to Nafion, Aquivion exhibits larger water content, but similar dehydration rate as a function of ohmic losses, and larger water accumulation at the under-lands area compared to channel. (C) 2017 Elsevier B.V. All rights reserved.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13773]
专题	2017专题
推荐引用方式 GB/T 7714	Peng, Zhe,Badets, Vasilica,Huguet, Patrice,et al. Operando mu-Raman study of the actual water content of perfluorosulfonic acid membranes in the fuel cell[J]. JOURNAL OF POWER SOURCES,2017,356:200-211.
APA	Peng, Zhe.,Badets, Vasilica.,Huguet, Patrice.,Morin, Arnaud.,Schott, Pascal.,...&Deabate, Stefano.(2017).Operando mu-Raman study of the actual water content of perfluorosulfonic acid membranes in the fuel cell.JOURNAL OF POWER SOURCES,356,200-211.
MLA	Peng, Zhe,et al."Operando mu-Raman study of the actual water content of perfluorosulfonic acid membranes in the fuel cell".JOURNAL OF POWER SOURCES 356(2017):200-211.