Počet záznamů: 1

Anion-selective materials with 1,4-diazabicyclo[2.2.2]octane functional groups for advanced alkaline water electrolysis

SYSNO ASEP	0477342
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Anion-selective materials with 1,4-diazabicyclo[2.2.2]octane functional groups for advanced alkaline water electrolysis
Tvůrce(i)	Hnát, J. (CZ) Plevová, M. (CZ) Žitka, Jan (UMCH-V)_RID Paidar, M. (CZ) Bouzek, K. (CZ)
Zdroj.dok.	Electrochimica acta. - : Elsevier - ISSN 0013-4686 Roč. 248, 10 September (2017), s. 547-555
Poč.str.	9 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	water electrolysis ; alkaline environment ; anion-selective membrane
Vědní obor RIV	CG - Elektrochemie
Obor OECD	Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
CEP	GA16-20728S GA ČR - Grantová agentura ČR
Institucionální podpora	UMCH-V - RVO:61389013
UT WOS	000409525300060
EID SCOPUS	85026731806
DOI	10.1016/j.electacta.2017.07.165
Anotace	In this study a novel alkaline polymer electrolyte membrane is presented, based on polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (PSEBS) functionalized by the 1,4-diazabicyclo[2.2.2]octane (DABCO) to be used as an electrode compartment separator as well as a catalytic layer binder in the alkaline water electrolysis process with the aim to reduce the concentration of KOH in the liquid electrolyte and to allow the construction of an efficient zero gap-type cell. This material was selected due to the promising properties of both individual components resulting from their molecular structure. The prepared membrane was thoroughly characterized with regard to its stability in an alkaline environment. The prepared membrane showed an ion-exchange capacity value of 0.76 mmol g-1dry membrane and ionic conductivity of 7.5 S m-1 at 30 °C. Excellent membrane durability was confirmed for a KOH concentration range up to 10 wt.% and temperature up to 50 °C. Subsequently, the polymer electrolyte was tested in a laboratory alkaline water electrolyser using 10 wt.% KOH as a circulating medium showing promising current density of 150 mA cm-2 at 40 °C. In a 150-hour experiment the PSEBS functionalized by DABCO manifested very good stability and high potential for optimization for this process as it showed no signs of chemical degradation.
Pracoviště	Ústav makromolekulární chemie
Kontakt	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Rok sběru	2018

Počet záznamů: 1