Alkali-Stable Anion Exchange Membranes Based on Poly(xanthene)
Pan, Dong LU ; Chen, Si LU and Jannasch, Patric LU
(2023)
In ACS Macro Letters
12(1).
p.20-25
- Abstract
- Poly(xanthene)s (PXs) carrying trimethyl ammonium, methylpiperidinium and quinuclidinium cations were synthesized and studied as a new class of anion exchange membranes (AEMs). The polymers were prepared in a superacid-mediated polyhydroxyalkylation involving 4,4’-biphenol and 1-bromo-3-(trifluoroacetylphenyl)-propane, followed by quaternization reactions with the corresponding amines. The architecture with a rigid PX backbone decorated with cations via flexible alkyl spacer chains resulted in AEMs with high ionic conductivity, thermal and chemical stability. For example, hydroxide conductivities up to 129 mS cm−1 were reached at 80 °C, and all the AEMs showed exceptional alkaline stability with less than 4% ionic loss after... (More)
- Poly(xanthene)s (PXs) carrying trimethyl ammonium, methylpiperidinium and quinuclidinium cations were synthesized and studied as a new class of anion exchange membranes (AEMs). The polymers were prepared in a superacid-mediated polyhydroxyalkylation involving 4,4’-biphenol and 1-bromo-3-(trifluoroacetylphenyl)-propane, followed by quaternization reactions with the corresponding amines. The architecture with a rigid PX backbone decorated with cations via flexible alkyl spacer chains resulted in AEMs with high ionic conductivity, thermal and chemical stability. For example, hydroxide conductivities up to 129 mS cm−1 were reached at 80 °C, and all the AEMs showed exceptional alkaline stability with less than 4% ionic loss after treatment in 2 M aq. NaOH at 90 °C during 720 h. Critically, the diaryl ether links of the PX backbone remained intact after the harsh alkaline treatment, as evidenced by both 1H NMR spectroscopy and thermogravimetry. Our combined findings suggest that PX AEMs are viable for application in alkaline fuel cells and electrolyzers. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/31bf124d-aade-4ba9-9b4b-8ce1e437f42a
- author
- Pan, Dong
LU
; Chen, Si
LU
and Jannasch, Patric
LU
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- in
- ACS Macro Letters
- volume
- 12
- issue
- 1
- pages
- 6 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:36538018
- scopus:85144780177
- ISSN
- 2161-1653
- DOI
- 10.1021/acsmacrolett.2c00672
- language
- English
- LU publication?
- yes
- id
- 31bf124d-aade-4ba9-9b4b-8ce1e437f42a
- date added to LUP
- 2022-12-15 20:39:45
- date last changed
- 2023-11-08 02:21:04
@article{31bf124d-aade-4ba9-9b4b-8ce1e437f42a,
abstract = {{Poly(xanthene)s (PXs) carrying trimethyl ammonium, methylpiperidinium and quinuclidinium cations were synthesized and studied as a new class of anion exchange membranes (AEMs). The polymers were prepared in a superacid-mediated polyhydroxyalkylation involving 4,4’-biphenol and 1-bromo-3-(trifluoroacetylphenyl)-propane, followed by quaternization reactions with the corresponding amines. The architecture with a rigid PX backbone decorated with cations via flexible alkyl spacer chains resulted in AEMs with high ionic conductivity, thermal and chemical stability. For example, hydroxide conductivities up to 129 mS cm<sup>−1</sup> were reached at 80 °C, and all the AEMs showed exceptional alkaline stability with less than 4% ionic loss after treatment in 2 M aq. NaOH at 90 °C during 720 h. Critically, the diaryl ether links of the PX backbone remained intact after the harsh alkaline treatment, as evidenced by both <sup>1</sup>H NMR spectroscopy and thermogravimetry. Our combined findings suggest that PX AEMs are viable for application in alkaline fuel cells and electrolyzers.}},
author = {{Pan, Dong and Chen, Si and Jannasch, Patric}},
issn = {{2161-1653}},
language = {{eng}},
number = {{1}},
pages = {{20--25}},
publisher = {{The American Chemical Society (ACS)}},
series = {{ACS Macro Letters}},
title = {{Alkali-Stable Anion Exchange Membranes Based on Poly(xanthene)}},
url = {{http://dx.doi.org/10.1021/acsmacrolett.2c00672}},
doi = {{10.1021/acsmacrolett.2c00672}},
volume = {{12}},
year = {{2023}},
}