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Anion exchange membrane water electrolysis using Aemion membranes and nickel electrodes

Khataee, Amirreza ; Shirole, Anuja LU ; Jannasch, Patric LU orcid ; Krüger, Andries and Cornell, Ann (2022) In Journal of Materials Chemistry A 10(30). p.16061-16070
Abstract
Anion exchange membrane water electrolysis (AEMWE) is a potentially low-cost and sustainable technology for hydrogen production that combines the advantages of proton exchange membrane water electrolysis and traditional alkaline water electrolysis systems. Despite considerable research efforts in recent years, the medium-term (100 h) stability of AemionTM membranes needs further investigation. This work explores the chemical and electrochemical durability (>100 h) of AemionTM anion exchange membranes in a flow cell using nickel felt as electrode material on the anode and cathode sides. Remixing the electrolytes between the AEMWE galvanostatic tests was very important to enhance electrolytes refreshment and the... (More)
Anion exchange membrane water electrolysis (AEMWE) is a potentially low-cost and sustainable technology for hydrogen production that combines the advantages of proton exchange membrane water electrolysis and traditional alkaline water electrolysis systems. Despite considerable research efforts in recent years, the medium-term (100 h) stability of AemionTM membranes needs further investigation. This work explores the chemical and electrochemical durability (>100 h) of AemionTM anion exchange membranes in a flow cell using nickel felt as electrode material on the anode and cathode sides. Remixing the electrolytes between the AEMWE galvanostatic tests was very important to enhance electrolytes refreshment and the voltage stability of the system. The membranes were analyzed by NMR spectroscopy after the AEMWE tests, and the results showed no sign of severe chemical degradation. In a separate experiment, the chemical stability and mechanical integrity of the membranes were studied by soaking them in a strongly alkaline electrolyte for a month (>700 h) at 90 °C, followed by NMR analysis. A certain extent of ionic loss was observed due to chemical degradation and the membranes disintegrated into small pieces.
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials Chemistry A
volume
10
issue
30
pages
10 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85137033448
ISSN
2050-7488
DOI
10.1039/D2TA03291K
language
English
LU publication?
yes
id
f1ec17a9-9259-4703-ab4b-fd2e0aa59bfd
date added to LUP
2022-03-05 12:34:02
date last changed
2022-11-08 14:31:44
@article{f1ec17a9-9259-4703-ab4b-fd2e0aa59bfd,
  abstract     = {{Anion exchange membrane water electrolysis (AEMWE) is a potentially low-cost and sustainable technology for hydrogen production that combines the advantages of proton exchange membrane water electrolysis and traditional alkaline water electrolysis systems. Despite considerable research efforts in recent years, the medium-term (100 h) stability of Aemion<sup>TM</sup> membranes needs further investigation. This work explores the chemical and electrochemical durability (&gt;100 h) of Aemion<sup>TM</sup> anion exchange membranes in a flow cell using nickel felt as electrode material on the anode and cathode sides. Remixing the electrolytes between the AEMWE galvanostatic tests was very important to enhance electrolytes refreshment and the voltage stability of the system. The membranes were analyzed by NMR spectroscopy after the AEMWE tests, and the results showed no sign of severe chemical degradation. In a separate experiment, the chemical stability and mechanical integrity of the membranes were studied by soaking them in a strongly alkaline electrolyte for a month (&gt;700 h) at 90 °C, followed by NMR analysis. A certain extent of ionic loss was observed due to chemical degradation and the membranes disintegrated into small pieces.<br/>}},
  author       = {{Khataee, Amirreza and Shirole, Anuja and Jannasch, Patric and Krüger, Andries and Cornell, Ann}},
  issn         = {{2050-7488}},
  language     = {{eng}},
  number       = {{30}},
  pages        = {{16061--16070}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Journal of Materials Chemistry A}},
  title        = {{Anion exchange membrane water electrolysis using Aemion membranes and nickel electrodes}},
  url          = {{http://dx.doi.org/10.1039/D2TA03291K}},
  doi          = {{10.1039/D2TA03291K}},
  volume       = {{10}},
  year         = {{2022}},
}