| Download | - View accepted manuscript: Estimation of local relative humidity in cathode catalyst layers of PEFC (PDF, 648 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1149/1.3355233 |
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| Author | Search for: Gazzarri, Javier1; Search for: Eikerling, Michael1; Search for: Wang, Qianpu1; Search for: Liu, Zhong-Sheng1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Fuel Cell Innovation
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| Format | Text, Article |
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| Conference | 216th ECS Meeting, October 4–9, 2009, Vienna, Austria |
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| Subject | catalysts; cathodes; electric impedance measurement; electrochemical electrodes; humidity; proton exchange membrane fuel cells |
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| Abstract | A simple method is presented to estimate the local relative humidity (RH) in cathode catalyst layers (CCLs) of polymer electrolyte fuel cells (PEFCs). Based on impedance measurements under different experimental conditions, this technique provides a means to estimate the average value for RH using a correlation with the catalyst layer effective proton resistance. At zero current, a fully humidified anode raises the RH inside the CCL from a nominal 30% to almost 70%. A current density of up to 0.4 A/cm2 also humidifies the cathode, while drying is observed between 0.4 and 1.0 A/cm2. |
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| Publication date | 2010-04 |
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| Access condition | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 14968149 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 1cca8afe-0591-4ac8-8a1f-cb1c9aa0604e |
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| Record created | 2010-04-14 |
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| Record modified | 2020-04-17 |
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