Počet záznamů: 1

Polysulfone-based anion exchange polymers for catalyst binders in alkaline electrolyzers

SYSNO ASEP	0446655
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Polysulfone-based anion exchange polymers for catalyst binders in alkaline electrolyzers
Tvůrce(i)	Schauer, Jan (UMCH-V)_RID Žitka, Jan (UMCH-V)_RID Pientka, Zbyněk (UMCH-V)_RID Křivčík, J. (CZ) Hnát, J. (CZ) Bouzek, K. (CZ)
Zdroj.dok.	Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995 Roč. 132, č. 40 (2015), 42581_1-42581_7
Poč.str.	7 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	degradation ; electrochemistry ; membranes
Vědní obor RIV	JI - Kompozitní materiály
Institucionální podpora	UMCH-V - RVO:61389013
UT WOS	000358615600003
EID SCOPUS	84937975302
DOI	10.1002/app.42581
Anotace	The preparation of quaternized bisphenol A polysulfone (PSf) by chloromethylation and quaternization with trimethylamine (TMA), 1,4-diazabicyclo[2.2.2]octane (DABCO), 1-methylimidazole (MI), or 1,2-dimethylimidazole (DMI) is described. While the ion-exchange capacities (IECs) of MI or DMI quaternized PSf significantly decrease in concentrated KOH solutions at 60°C, the IECs of TMA or DABCO quaternized PSf are not much affected, but the membranes of these polymers become brittle. TMA quaternized PSf (IEC = 1.21 meq/g; IC = 2.45 S/m) and DABCO quaternized PSf (IEC = 1.09 meq/g; IC = 2.49 S/m) were used to bind a NiCo2O4 spinel electrocatalyst on the anode of Ni foam. Both the quaternized PSfs were quite effective in water electrolysis when used as binders, but not more effective than PTFE when rear sides of electrodes were fed with 10 wt % aqueous KOH solution. For long-term electrolysis, binders based on more stable anion-conductive polymers should be developed.
Pracoviště	Ústav makromolekulární chemie
Kontakt	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Rok sběru	2016

Počet záznamů: 1