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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F15%3A00446655" target="_blank" >RIV/61389013:_____/15:00446655 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/15:43899927

Výsledek na webu

<a href="http://dx.doi.org/10.1002/app.42581" target="_blank" >http://dx.doi.org/10.1002/app.42581</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/app.42581" target="_blank" >10.1002/app.42581</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

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

CEP obor

JI - Kompositní materiály

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Polymer Science

ISSN

0021-8995

e-ISSN

—

Svazek periodika

132

Číslo periodika v rámci svazku

40

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

"42581_1"-"42581_7"

Kód UT WoS článku

000358615600003

EID výsledku v databázi Scopus

2-s2.0-84937975302