In Situ Analysis of Performance Degradation of a PEMFC under Nonsaturated Humidification
- 1 January 2005
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 8 (3), A156-A158
- https://doi.org/10.1149/1.1854781
Abstract
A 2700 h life test of a single proton exchange membrane fuel cell (PEMFC) with Nafion 112 membrane under nonsaturated humidification was conducted. In situ measurements of hydrogen crossover rate through the membrane and electrochemical active surface area (EAS) of Pt catalyst, in combination with cell polarization curves, were applied to investigate the degradation mechanism. A slow decrease of the EAS of Pt catalyst from 400 to 1900 h running was found to cause a slight voltage decay only at high current densities. However, a subsequent dramatic degradation of the membrane results in an accelerated collapse of the fuel cell. © 2005 The Electrochemical Society. All rights reserved.Keywords
This publication has 15 references indexed in Scilit:
- Aging mechanisms and lifetime of PEFC and DMFCJournal of Power Sources, 2004
- Degradation Study of MEA for PEMFCs under Low Humidity ConditionsElectrochemical and Solid-State Letters, 2004
- Catalyst Microstructure Examination of PEMFC Membrane Electrode Assemblies vs. TimeJournal of the Electrochemical Society, 2004
- Performance and lifetime analysis of the kW-class PEMFC stackJournal of Power Sources, 2002
- Materials for fuel-cell technologiesNature, 2001
- Performance and endurance of a PEMFC operated with synthetic reformate fuel feedJournal of Power Sources, 1998
- Operating Proton Exchange Membrane Fuel Cells Without External Humidification of the Reactant Gases: Fundamental AspectsJournal of the Electrochemical Society, 1997
- Low platinum loading electrodes for polymer electrolyte fuel cells fabricated using thermoplastic ionomersElectrochimica Acta, 1995
- Analysis of proton exchange membrane fuel cell performance with alternate membranesElectrochimica Acta, 1995
- Surface Area Loss of Supported Platinum in Polymer Electrolyte Fuel CellsJournal of the Electrochemical Society, 1993