Hauptseite > Publikationsdatenbank > (Poster Award - Honorable Mention) Durable Polybenzimidazole Anion Exchange Membranes for Alkaline Water Electrolyzers > print

001     1037739
005     20250203103127.0
024 7 _ |a 10.1149/MA2023-02391889mtgabs
|2 doi
024 7 _ |a 1091-8213
|2 ISSN
024 7 _ |a 2151-2043
|2 ISSN
037 _ _ |a FZJ-2025-00899
082 _ _ |a 540
100 1 _ |a Boström, Oskar
|0 P:(DE-HGF)0
|b 0
111 2 _ |a 244th ECS Meeting
|c Gothenburg
|d 2023-10-08 - 2023-10-12
|w Sweden
245 _ _ |a (Poster Award - Honorable Mention) Durable Polybenzimidazole Anion Exchange Membranes for Alkaline Water Electrolyzers
260 _ _ |c 2023
336 7 _ |a Abstract
|b abstract
|m abstract
|0 PUB:(DE-HGF)1
|s 1737473365_4205
|2 PUB:(DE-HGF)
336 7 _ |a Conference Paper
|0 33
|2 EndNote
336 7 _ |a INPROCEEDINGS
|2 BibTeX
336 7 _ |a conferenceObject
|2 DRIVER
336 7 _ |a Output Types/Conference Abstract
|2 DataCite
336 7 _ |a OTHER
|2 ORCID
520 _ _ |a Water electrolysis under alkaline conditions allows the use of inexpensive non-platinum-group catalysts such as nickel.1, 2 Conventional alkaline electrolyzers usually employ a highly concentrated aq. KOH solution as electrolyte (5-7 M) with a porous diaphragm as separator. Alternatively, protolysable polymers such as polybenzimidazole (PBI) may be swollen with electrolyte and used as ion-solvating membranes.2, 3 However, the chemical stability of the polymers can become a serious issue under these harsh conditions. Operation under more dilute conditions, e.g., up to 2 M KOH, may bring the benefits of the alkaline conditions combined with a longer cell lifetime. Under these conditions, aliphatic cyclic quaternary ammonium (QA) cations, such as piperidinium, have shown excellent stability.In the present work, performed as part of the EU project "NEXTAEC", we have designed and synthesized m-PBI grafted with mono- and bis-piperidinium functionalized side chains, respectively (Figure 1a-b). AEMs were prepared from polymers with varying ion exchange capacities and studied at 80 °C containing KOH solutions in the concentration range 0.5-2 M KOH. The membranes were characterized with respect to, e.g., electrolyte solution uptake, alkaline stability, and electrolyser performance (Figure 1c). The uptake showed a strong inverse correlation with KOH concentration, which also affected the electrochemical performance. The stability as evaluated by 1HNMR spectroscopy was excellent showing, in the worst case, less than 8 % ionic loss after 6 months storage in 2 M KOH at 80 °C.
536 _ _ |a 1231 - Electrochemistry for Hydrogen (POF4-123)
|0 G:(DE-HGF)POF4-1231
|c POF4-123
|f POF IV
|x 0
588 _ _ |a Dataset connected to CrossRef, Journals: juser.fz-juelich.de
700 1 _ |a Choi, Seung-Young
|0 P:(DE-HGF)0
|b 1
700 1 _ |a Xia, Lu
|0 P:(DE-Juel1)175127
|b 2
700 1 _ |a Lohmann-Richters, Felix
|0 P:(DE-Juel1)176513
|b 3
|u fzj
700 1 _ |a Jannasch, Patric
|0 P:(DE-HGF)0
|b 4
773 _ _ |a 10.1149/MA2023-02391889mtgabs
|0 PERI:(DE-600)2438749-6
|y 2023
|g Vol. MA2023-02, no. 39, p. 1889 - 1889
|x 2151-2043
909 C O |o oai:juser.fz-juelich.de:1037739
|p VDB
910 1 _ |a Forschungszentrum Jülich
|0 I:(DE-588b)5008462-8
|k FZJ
|b 3
|6 P:(DE-Juel1)176513
913 1 _ |a DE-HGF
|b Forschungsbereich Energie
|l Materialien und Technologien für die Energiewende (MTET)
|1 G:(DE-HGF)POF4-120
|0 G:(DE-HGF)POF4-123
|3 G:(DE-HGF)POF4
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|v Chemische Energieträger
|9 G:(DE-HGF)POF4-1231
|x 0
914 1 _ |y 2024
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)IEK-14-20191129
|k IEK-14
|l Elektrochemische Verfahrenstechnik
|x 0
920 1 _ |0 I:(DE-Juel1)IET-4-20191129
|k IET-4
|l Elektrochemische Verfahrenstechnik
|x 1
980 _ _ |a abstract
980 _ _ |a VDB
980 _ _ |a I:(DE-Juel1)IEK-14-20191129
980 _ _ |a I:(DE-Juel1)IET-4-20191129
980 _ _ |a UNRESTRICTED

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