Radiostation Grafted Ion-Conducting Membranes: The Influence of Variations in Base Film Nanostructure
(2016) In Macromolecules 49(11). p.4253-4264- Abstract
- The proton exchange membrane (PEM) is a key element of a polymer electrolyte fuel cell, and radiation-grafting is an attractive option for the synthesis of PEMs. Via a systematic investigation of a well-defined model material, sulfonated polystyrene grafted poly(ethylene-alt-tetrafluoroethylene), ETFE-g-PS(SA), we show that the performance and stability of radiation-grafted PEMs in fuel cells strongly depends on the microstructure of the underlying base polymer. The nanoscale structure of the base polymers, grafted films, and membranes is probed by small-angle scattering, and the nanoscale proton dynamics is probed by quasi-elastic neutron scattering. The results of these techniques correlated with fuel cell relevant properties—including... (More)
- The proton exchange membrane (PEM) is a key element of a polymer electrolyte fuel cell, and radiation-grafting is an attractive option for the synthesis of PEMs. Via a systematic investigation of a well-defined model material, sulfonated polystyrene grafted poly(ethylene-alt-tetrafluoroethylene), ETFE-g-PS(SA), we show that the performance and stability of radiation-grafted PEMs in fuel cells strongly depends on the microstructure of the underlying base polymer. The nanoscale structure of the base polymers, grafted films, and membranes is probed by small-angle scattering, and the nanoscale proton dynamics is probed by quasi-elastic neutron scattering. The results of these techniques correlated with fuel cell relevant properties—including proton conductivity and water uptake—and fuel cell performance clearly indicate that differences in the arrangement of the crystalline phase in the otherwise chemically identical semicrystalline base films can have considerable impact, representing an essential aspect to consider in the development of proton exchange membranes prepared via preirradiation grafting. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/880cd029-def1-42d8-8eb4-d2cd6da38659
- author
- Sproll, Véronique ; Nagy, Gergely ; Gasser, Urs ; Embs, Jan Peter ; Obiols-Rabasa, Marc LU ; Schmidt, Thomas J. ; Gubler, Lorenz and Balog, Sandor
- organization
- publishing date
- 2016-05-17
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Macromolecules
- volume
- 49
- issue
- 11
- pages
- 12 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:84974815443
- wos:000378016200027
- ISSN
- 0024-9297
- DOI
- 10.1021/acs.macromol.6b00180
- language
- English
- LU publication?
- yes
- id
- 880cd029-def1-42d8-8eb4-d2cd6da38659
- date added to LUP
- 2016-07-20 15:29:56
- date last changed
- 2022-04-16 18:36:17
@article{880cd029-def1-42d8-8eb4-d2cd6da38659,
abstract = {{The proton exchange membrane (PEM) is a key element of a polymer electrolyte fuel cell, and radiation-grafting is an attractive option for the synthesis of PEMs. Via a systematic investigation of a well-defined model material, sulfonated polystyrene grafted poly(ethylene-alt-tetrafluoroethylene), ETFE-g-PS(SA), we show that the performance and stability of radiation-grafted PEMs in fuel cells strongly depends on the microstructure of the underlying base polymer. The nanoscale structure of the base polymers, grafted films, and membranes is probed by small-angle scattering, and the nanoscale proton dynamics is probed by quasi-elastic neutron scattering. The results of these techniques correlated with fuel cell relevant properties—including proton conductivity and water uptake—and fuel cell performance clearly indicate that differences in the arrangement of the crystalline phase in the otherwise chemically identical semicrystalline base films can have considerable impact, representing an essential aspect to consider in the development of proton exchange membranes prepared via preirradiation grafting.}},
author = {{Sproll, Véronique and Nagy, Gergely and Gasser, Urs and Embs, Jan Peter and Obiols-Rabasa, Marc and Schmidt, Thomas J. and Gubler, Lorenz and Balog, Sandor}},
issn = {{0024-9297}},
language = {{eng}},
month = {{05}},
number = {{11}},
pages = {{4253--4264}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Macromolecules}},
title = {{Radiostation Grafted Ion-Conducting Membranes: The Influence of Variations in Base Film Nanostructure}},
url = {{http://dx.doi.org/10.1021/acs.macromol.6b00180}},
doi = {{10.1021/acs.macromol.6b00180}},
volume = {{49}},
year = {{2016}},
}