Optimization of the membrane electrode assembly for an alkaline water electrolyser based on the catalyst-coated membrane
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F22%3A00557382" target="_blank" >RIV/61389013:_____/22:00557382 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/22:43924399
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0378775322004839" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378775322004839</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jpowsour.2022.231476" target="_blank" >10.1016/j.jpowsour.2022.231476</a>
Alternative languages
Result language
angličtina
Original language name
Optimization of the membrane electrode assembly for an alkaline water electrolyser based on the catalyst-coated membrane
Original language description
This study deals with the preparation and characterisation of catalyst-coated membranes for an alkaline water electrolysis process. For this purpose, a chloromethylated anion-selective block copolymer of styrene-ethylene-butylene-styrene with 1,4-diazabicyclo[2.2.2]octane functional groups was used both as an alkaline polymer electrolyte membrane and as an ionomer binder. Non-PGM catalysts (platinum group metals), specifically NiCo2O4 and NiFe2O4, were used on the anode and cathode side of the membrane, respectively. Air-brush deposition or computer-controlled ultrasonic dispersion of the catalytic ink were used to deposit the catalyst layers. The influence of the composition of the catalyst layer on its stability and the resulting electrolysis cell performance was investigated under typical membrane alkaline water electrolysis conditions (1–15 wt.% KOH, 45 °C). The optimal catalyst-to-binder ratio in the catalyst layer was identified as 93/7 using a catalyst loading of 2.5 mg cm-2 on each side of the membrane. The membrane electrode assembly prepared under optimal conditions showed high stability over 140 h at a current density of 250 mA cm-2. At this current load, the cell exhibited a voltage of 2.025 ± 0.010 V. The increase in cell voltage observed during the stability test did not exceed 1 μV h-1.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Power Sources
ISSN
0378-7753
e-ISSN
1873-2755
Volume of the periodical
539
Issue of the periodical within the volume
15 August
Country of publishing house
CH - SWITZERLAND
Number of pages
10
Pages from-to
231476
UT code for WoS article
000833529800001
EID of the result in the Scopus database
2-s2.0-85130172266