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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60461373:22310/19:43917852

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/VI20152019018" target="_blank" >VI20152019018: Vývoj a realizace nezávislého DC zdroje napájení s vodíkovým palivovým článkem</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů