Nafion 117 stability under conditions of PEM water electrolysis at elevated temperature and pressure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43901930" target="_blank" >RIV/60461373:22340/16:43901930 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/16:43901930

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0360319915306273" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0360319915306273</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijhydene.2015.11.102" target="_blank" >10.1016/j.ijhydene.2015.11.102</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nafion 117 stability under conditions of PEM water electrolysis at elevated temperature and pressure

Popis výsledku v původním jazyce

In this work a systematic study of the behaviour of a Nafion 117 membrane under conditions of elevated temperatures (up to 150 degrees C) and pressure (up to 0.7 MPa) was carried out. Attention focused primarily on the ionic conductivity of the membrane in the proton form with exposure to the conditions under study for up to 800 h. The ion-exchange capacity, morphology, FTIR and NMR spectra of the membrane were determined to explain the decline in conductivity observed over time. The techniques used did not reveal any chemical degradation of the membrane polymer. The morphological changes to the membrane connected with excessive expansion of the internal structure of the polymer are assumed to be the reason for the phenomenon observed. Finally, to confirm the conclusions derived, the membrane behaviour in a laboratory-scale water electrolysis cell was studied under operating conditions corresponding to its prior characterization.

Název v anglickém jazyce

Nafion 117 stability under conditions of PEM water electrolysis at elevated temperature and pressure

Popis výsledku anglicky

In this work a systematic study of the behaviour of a Nafion 117 membrane under conditions of elevated temperatures (up to 150 degrees C) and pressure (up to 0.7 MPa) was carried out. Attention focused primarily on the ionic conductivity of the membrane in the proton form with exposure to the conditions under study for up to 800 h. The ion-exchange capacity, morphology, FTIR and NMR spectra of the membrane were determined to explain the decline in conductivity observed over time. The techniques used did not reveal any chemical degradation of the membrane polymer. The morphological changes to the membrane connected with excessive expansion of the internal structure of the polymer are assumed to be the reason for the phenomenon observed. Finally, to confirm the conclusions derived, the membrane behaviour in a laboratory-scale water electrolysis cell was studied under operating conditions corresponding to its prior characterization.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GC15-02407J" target="_blank" >GC15-02407J: Elektrolýza vody s protonově selektivním polymerním elektrolytem pro vysoce účinnou konverzi energie</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

International Journal of Hydrogen Energy

ISSN

0360-3199

e-ISSN

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Svazek periodika

41

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

2177-2188

Kód UT WoS článku

000370306300007

EID výsledku v databázi Scopus

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