Alkali doped poly (2,5-benzimidazole) membrane for alkaline water electrolysis: Characterization and performance
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902033" target="_blank" >RIV/60461373:22310/16:43902033 - isvavai.cz</a>
Výsledek na webu
<a href="http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=17&SID=U1xdTQN4PSIYcD9LCk2&page=1&doc=2" target="_blank" >http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=17&SID=U1xdTQN4PSIYcD9LCk2&page=1&doc=2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jpowsour.2016.02.032" target="_blank" >10.1016/j.jpowsour.2016.02.032</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Alkali doped poly (2,5-benzimidazole) membrane for alkaline water electrolysis: Characterization and performance
Popis výsledku v původním jazyce
The properties and performance of linear and cross-linked KOH doped ABPBI membranes as electrolyte/separator for zero gap alkaline water electrolysis cells are evaluated and compared with a commercial Zirfon (R) diaphragm. Stability in alkaline environment, swelling, thermal properties, water sorption, KOH uptake and conductivity of linear (L-ABPBI) and cross-linked (C-ABPBI) membranes doped with different concentrations of KOH are analyzed. Linear membranes show stability up to 3.0 mol.dm(-3) KOH doping, while cross-linked membranes are stable up to 4.2 mol.dm(-3) KOH doping. Both kinds of membranes exhibit good thermal stability and reasonable specific ionic conductivity at 22 degrees C in the range between 7 and 25 mS.cm(-1), being slightly higher the conductivity of C-ABPBI membranes than that of L-ABPBI ones. In short-term electrolysis tests both L-ABPBI and C-ABPBI membranes show better performance than Zirfon diaphragm in the range from 50 to 70 degrees C. A current density of 335 mA.cm(-2) at a cell voltage of 2.0 V is attained with C-ABPBI membranes doped in 3 mol.dm(-3) KOH at 70 degrees C, a performance comparable with that of commercial units operating at temperatures ca. 80 C and 30 wt% KOH (6.7 mol.dm(-3)) as electrolyte.
Název v anglickém jazyce
Alkali doped poly (2,5-benzimidazole) membrane for alkaline water electrolysis: Characterization and performance
Popis výsledku anglicky
The properties and performance of linear and cross-linked KOH doped ABPBI membranes as electrolyte/separator for zero gap alkaline water electrolysis cells are evaluated and compared with a commercial Zirfon (R) diaphragm. Stability in alkaline environment, swelling, thermal properties, water sorption, KOH uptake and conductivity of linear (L-ABPBI) and cross-linked (C-ABPBI) membranes doped with different concentrations of KOH are analyzed. Linear membranes show stability up to 3.0 mol.dm(-3) KOH doping, while cross-linked membranes are stable up to 4.2 mol.dm(-3) KOH doping. Both kinds of membranes exhibit good thermal stability and reasonable specific ionic conductivity at 22 degrees C in the range between 7 and 25 mS.cm(-1), being slightly higher the conductivity of C-ABPBI membranes than that of L-ABPBI ones. In short-term electrolysis tests both L-ABPBI and C-ABPBI membranes show better performance than Zirfon diaphragm in the range from 50 to 70 degrees C. A current density of 335 mA.cm(-2) at a cell voltage of 2.0 V is attained with C-ABPBI membranes doped in 3 mol.dm(-3) KOH at 70 degrees C, a performance comparable with that of commercial units operating at temperatures ca. 80 C and 30 wt% KOH (6.7 mol.dm(-3)) as electrolyte.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CG - Elektrochemie
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/7AMB13AR016" target="_blank" >7AMB13AR016: Optimalizace procesu konverze energie s využitím elektrolýzy vody a palivových článků s polymerní membránou.</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Power Sources
ISSN
0378-7753
e-ISSN
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Svazek periodika
312
Číslo periodika v rámci svazku
April
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
9
Strana od-do
128-136
Kód UT WoS článku
000373541700016
EID výsledku v databázi Scopus
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