Zhang, Xu, Song, Datong, Wang, Qianpu, Huang, Cheng, Liu, Zhong-Sheng and Shah, A.A.. (2010) Numerical analysis of water transport through the membrane electrolyte assembly of a polymer exchange membrane fuel cell. Journal of Fuel Cell Science and Technology, Vol.7 (No.2). Article: 021009. ISSN 1550-624X

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Abstract

The effects of water transport through membrane electrolyte assembly of a polymer exchange membrane fuel cell on cell performance has been studied by a one-dimensional, nonisothermal, steady-state model. Three forms of water are considered in the model: dissolved water in the electrolyte or membrane, and liquid water and water vapor in the void space. Phase changes among these three forms of water are included based on the corresponding local equilibriums between the two involved forms. Water transport and its effect on cell performance have been discussed under different operating conditions by using the value and the sign of the net water transport coefficient, which is defined by the net flux of water transported from the anode side to the cathode side per proton flux. Optimal cell performance can be obtained by adjusting the liquid water saturation at the interface of the cathode gas diffusion layer and flow channels.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology
Divisions:	Faculty of Science > Engineering
Journal or Publication Title:	Journal of Fuel Cell Science and Technology
Publisher:	American Society of Mechanical Engineers
ISSN:	1550-624X
Date:	April 2010
Volume:	Vol.7
Number:	No.2
Number of Pages:	14
Page Range:	Article: 021009
Identification Number:	10.1115/1.3177448
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/46656

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