Influence of Inertization and Purity of Nitrogen Produced by Membrane Module on Lifetime of PEM Fuel Cell

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43917851" target="_blank" >RIV/60461373:22310/19:43917851 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/19:43917852
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Influence of Inertization and Purity of Nitrogen Produced by Membrane Module on Lifetime of PEM Fuel Cell
Original language description
Inertization at the end of active period represents an important part of operating PEM fuel cell stack. This part of the fuel cell operational cycle is important both from lifetime and safety point of view. Significance of this step increases with increasing permeability of such membrane for hydrogen. This, especially during off period, results in formation of aggressive species in the catalytic layers of the gas diffusion electrodes enhancing their chemical degradation. The traditional media for fuel cell inertization is nitrogen. It can be stored in a high pressure cylinders, but volume of gas in cylinder is sufficient just for a limited number of inertization cycles before replacement or refilling is required. An alternative solution represents production of nitrogen of sufficient purity from air by means of membrane separation modules. Unfortunately, the membrane module is not able to produce nitrogen at purity higher than 99.9 %. In this work will be studied possibility of nitrogen production in different type of modules and influence of oxygen content into fuel cell lifetime.
Czech name
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Czech description
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Project
<a href="/en/project/VI20152019018" target="_blank" >VI20152019018: Development and realization of autonomous DC power supply with hydrogen fuel cell</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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