| Download | - View final version: Effects of 1, 2, 4-triazole additive on PEM fuel cell conditioning (PDF, 4.4 MiB)
- View supplementary information: Effects of 1, 2, 4-triazole additive on PEM fuel cell conditioning (PDF, 51 KiB)
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| DOI | Resolve DOI: https://doi.org/10.3390/membranes10110301 |
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| Author | Search for: Zhao, Nana1ORCID identifier: https://orcid.org/0000-0002-9391-7795; Search for: Shi, Zhiqing1; Search for: Chenitz, Régis2; Search for: Girard, François1; Search for: Mokrini, Asmae2ORCID identifier: https://orcid.org/0000-0002-2969-0434 |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
- National Research Council of Canada. Automotive and Surface Transportation
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| Format | Text, Article |
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| Subject | proton exchange membrane (PEM) fuel cell; 1, 2, 4-triazole; additives; contamination; conditioning; melt blowing processing |
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| Abstract | Melt processing is one of the essential technologies for the mass production of polymer electrolyte membranes (PEM) at low cost. Azoles have been widely used in PEM to improve their conductivity at a relatively low humidity and recently as bifunctional additives in a melt blowing processing for PEM mass production. In this work, we attempted to assess the effect of 1, 2, 4-triazole additive in membranes and in catalyst layers on PEM fuel cell conditioning. Various characterization tools including electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and conditioning with constant current were applied to diagnose the temporary electrochemical reaction effect and the permanent performance loss caused by the triazole additives. It was found that triazole additives in membranes could migrate into the catalyst layers and significantly affect the open circuit voltage (OCV) and the conditioning. The effect could be partially or completely removed/cleaned either through longer conditioning time or via CV cycling, which depends on the amount of additives remaining in the membrane. The findings provide valuable scientific insights on the relevance of post treatment steps during membrane production and overcoming fuel cell contamination issues due to residual additive in the membranes and understanding the quality control needed for fuel cell membranes by melt blowing processing. |
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| Publication date | 2020-10-22 |
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| Publisher | MDPI |
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| Language | English |
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| Peer reviewed | Yes |
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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 | c272d99d-e505-4cb6-bce7-7d35c77553c1 |
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| Record created | 2021-05-27 |
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| Record modified | 2021-05-28 |
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