High performance water electrolysis using a poly(fluorene phenylpropylammonium) anion-exchange membrane with 2 M aqueous KOH
(2024) In Journal of Materials Chemistry A 12(21). p.12826-12834- Abstract
- Anion exchange membrane water electrolysis (AEMWE) has a great potential to be established as a high-performance and low-capital cost technology for hydrogen production. High current densities can be achieved with non-platinum group metal (non-PGM) catalyst. However, the harsh operation conditions require stable cell components. Here, we report on the use of a highly stable and ion conductive poly(fluorene alkylene) membrane (PdF-TMA) tethered with trimethylammonium cations via phenylpropyl side chains for AEMWEs operating with 2 M aqueous KOH. The ether-free PdF-TMA polymer is efficiently prepared by polyhydroxyalkylation to reach a molecular weight of 236 kDa, a high thermal stability, and an ion-exchange capacity of 2.14 mequiv.... (More)
- Anion exchange membrane water electrolysis (AEMWE) has a great potential to be established as a high-performance and low-capital cost technology for hydrogen production. High current densities can be achieved with non-platinum group metal (non-PGM) catalyst. However, the harsh operation conditions require stable cell components. Here, we report on the use of a highly stable and ion conductive poly(fluorene alkylene) membrane (PdF-TMA) tethered with trimethylammonium cations via phenylpropyl side chains for AEMWEs operating with 2 M aqueous KOH. The ether-free PdF-TMA polymer is efficiently prepared by polyhydroxyalkylation to reach a molecular weight of 236 kDa, a high thermal stability, and an ion-exchange capacity of 2.14 mequiv. g-1 (OH− form). Using commercial electrodes of NiFe2O4 (anode) and Raney Nickel (cathode) and PdF-TMA as AEM, the output current reached 1 A cm-2 at below 1.9 V at 60 °C. Also, PdF-TMA outperformed AEMIONTM membrane resistance by almost 30% and, after 100 h at 0.5 A cm-2, did not reveal any loss of conductivity, contrary to AEMIONTM. Furthermore, both membranes were analysed by 1H NMR spectroscopy after AEMWE tests and the PdF-TMA proved very stable even at 80 °C.
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Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/85e32a71-2cae-4c64-860f-902524c4e435
- author
- Rossini, Matteo ; Pan, Dong LU ; Koyutürk, Burak ; Chen, Si LU ; Khataee, Amirreza ; Lindbergh, Göran ; Jannasch, Patric LU and Cornell, Ann
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Materials Chemistry A
- volume
- 12
- issue
- 21
- pages
- 9 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85192312027
- ISSN
- 2050-7488
- DOI
- 10.1039/D4TA01057D
- language
- English
- LU publication?
- yes
- id
- 85e32a71-2cae-4c64-860f-902524c4e435
- date added to LUP
- 2023-03-13 10:30:12
- date last changed
- 2024-05-31 09:25:28
@article{85e32a71-2cae-4c64-860f-902524c4e435, abstract = {{Anion exchange membrane water electrolysis (AEMWE) has a great potential to be established as a high-performance and low-capital cost technology for hydrogen production. High current densities can be achieved with non-platinum group metal (non-PGM) catalyst. However, the harsh operation conditions require stable cell components. Here, we report on the use of a highly stable and ion conductive poly(fluorene alkylene) membrane (PdF-TMA) tethered with trimethylammonium cations via phenylpropyl side chains for AEMWEs operating with 2 M aqueous KOH. The ether-free PdF-TMA polymer is efficiently prepared by polyhydroxyalkylation to reach a molecular weight of 236 kDa, a high thermal stability, and an ion-exchange capacity of 2.14 mequiv. g<sup>-1</sup> (OH<sup>−</sup> form). Using commercial electrodes of NiFe<sub>2</sub>O<sub>4</sub> (anode) and Raney Nickel (cathode) and PdF-TMA as AEM, the output current reached 1 A cm<sup>-2</sup> at below 1.9 V at 60 °C. Also, PdF-TMA outperformed AEMION<sup>TM</sup> membrane resistance by almost 30% and, after 100 h at 0.5 A cm<sup>-2</sup>, did not reveal any loss of conductivity, contrary to AEMION<sup>TM</sup>. Furthermore, both membranes were analysed by <sup>1</sup>H NMR spectroscopy after AEMWE tests and the PdF-TMA proved very stable even at 80 °C.<br/>}}, author = {{Rossini, Matteo and Pan, Dong and Koyutürk, Burak and Chen, Si and Khataee, Amirreza and Lindbergh, Göran and Jannasch, Patric and Cornell, Ann}}, issn = {{2050-7488}}, language = {{eng}}, number = {{21}}, pages = {{12826--12834}}, publisher = {{Royal Society of Chemistry}}, series = {{Journal of Materials Chemistry A}}, title = {{High performance water electrolysis using a poly(fluorene phenylpropylammonium) anion-exchange membrane with 2 M aqueous KOH}}, url = {{http://dx.doi.org/10.1039/D4TA01057D}}, doi = {{10.1039/D4TA01057D}}, volume = {{12}}, year = {{2024}}, }