Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Two-phase dynamic modeling of the PEMFCs and simulation of cyclo-voltammograms
Authors : Ziegler, Christoph
Yu, Hong Mei
Schumacher, Jürgen
DOI : 10.1149/1.1946408
Published in : Journal of the Electrochemical Society
Volume(Issue) : 152
Issue : 8
Pages : 1555
Pages to: 1567
Issue Date: 2005
Publisher / Ed. Institution : Electrochemical Society
ISSN: 0013-4651
Language : English
Subjects : Fuel cells; Dynamic modelling; Pemfc; Simulation
Subject (DDC) : 621.3: Electrical engineering and electronics
Abstract: A mathematical model is developed that is based on a coupled system of partial differential equations. The model contains a dynamic and two-phase description of the proton exchange membrane fuel cell (PEMFC) and a membrane model that accounts for Schroeder’s paradox. The mass transport in the gas phase and in the liquid phase is considered as well as the phase transition between liquid water and water vapor. The transport of charges and the electrochemical reactions are part of the model. A potential sweep experiment is simulated using the mathematical model and measured using a test cell with an active area of 1cm2. In this way, the dynamic effect of liquid water formation and transport on the current-voltage characteristic of the fuel cell is investigated. A hysteresis effect is found in the measured time-dependent current-voltage relation. The limiting current density is time-dependent. Qualitative agreement of simulated and measured results is achieved. An analysis of the observed hysteresis of the current-voltage characteristics, based on the modeling results, is given.
Fulltext version : Published version
License (according to publishing contract) : Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in Collections:Publikationen School of Engineering

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.