Polymer anion-selective membrane for electrolytic water splitting: the impact of a liquid electrolyte composition on the process parameters and long-term stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F14%3A00427362" target="_blank" >RIV/61389013:_____/14:00427362 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/14:43897597

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ijhydene.2014.01.086" target="_blank" >http://dx.doi.org/10.1016/j.ijhydene.2014.01.086</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijhydene.2014.01.086" target="_blank" >10.1016/j.ijhydene.2014.01.086</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Polymer anion-selective membrane for electrolytic water splitting: the impact of a liquid electrolyte composition on the process parameters and long-term stability

Popis výsledku v původním jazyce

In the present study the impact of KOH replacement by a NaHCO3 or Na2CO3 solution on the performance of alkaline water electrolysis and the life-time of an anion-selective polymer electrolyte was assessed. In the first instance, the impact of the electrolyte composition on the kinetics of the electrode reactions was studied. Subsequently the ionic conductivity of the membrane, in the form of individual anions, and the efficiency of the alkaline water electrolysis process were evaluated by means of electrochemical impedance spectroscopy and a laboratory single-cell alkaline water electrolyzer. The anion used was observed to make a significant impact both on the ionic conductivity as well as on the kinetics of the anode reaction, resulting in reduced electrolysis efficiency. A stability test revealed kinetics of chemical degradation of the polymer anion-selective membrane in a Na2CO3 solution similar to those in a KOH environment at 70 °C. An alternative approach of decreasing the temper

Název v anglickém jazyce

Polymer anion-selective membrane for electrolytic water splitting: the impact of a liquid electrolyte composition on the process parameters and long-term stability

Popis výsledku anglicky

In the present study the impact of KOH replacement by a NaHCO3 or Na2CO3 solution on the performance of alkaline water electrolysis and the life-time of an anion-selective polymer electrolyte was assessed. In the first instance, the impact of the electrolyte composition on the kinetics of the electrode reactions was studied. Subsequently the ionic conductivity of the membrane, in the form of individual anions, and the efficiency of the alkaline water electrolysis process were evaluated by means of electrochemical impedance spectroscopy and a laboratory single-cell alkaline water electrolyzer. The anion used was observed to make a significant impact both on the ionic conductivity as well as on the kinetics of the anode reaction, resulting in reduced electrolysis efficiency. A stability test revealed kinetics of chemical degradation of the polymer anion-selective membrane in a Na2CO3 solution similar to those in a KOH environment at 70 °C. An alternative approach of decreasing the temper

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI2%2F442" target="_blank" >FR-TI2/442: Výzkum a vývoj pokročilých vodíkových technologií pro energetiku a dopravu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

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

39

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

4779-4787

Kód UT WoS článku

000334130800002

EID výsledku v databázi Scopus

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