Abstract
By varying the amount of porogene (ortho-dichlorobenzene, ODB), and optimization of the dispersion process, two types of solvent cast Nafion membranes with an equivalent weight of 1100 g/mol sulfonic acid can be obtained reproducibly. One type is a dense membrane with a porous layer on one surface. The other membrane type shows a novel structure, consisting of small closed pores throughout the membrane and a single layer of large open pores on one side. In addition, some membranes showed a structural morphology between these two types, a membrane with a dense part and a porous part on top of each other. The latter membrane structure was not fully reproducible yet, but probably could be by carefully adjusting the formulation of the casting solution. Also the effect of the casting temperature on the morphology is shown. Fully porous membranes were characterized for their water permeability, ion conductivity, mechanical properties, their performance in the fuel cell and the hydrogen crossover. While the fully porous membranes are not expected to be part of a real fuel cell, we expect that the new morphologies will inspire applied research, e.g. in which the pores are filled with electrolyte or material or a catalyst is blended into the polymer.
| Original language | English |
|---|---|
| Pages (from-to) | 723-730 |
| Number of pages | 8 |
| Journal | Journal of Membrane Science |
| Volume | 520 |
| DOIs | |
| Publication status | Published - 2016 Dec 15 |
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Keywords
- Morphology
- Nafion dispersion
- Porosity
- Porous Nafion membranes
- Water transport
ASJC Scopus subject areas
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
Porous Nafion membranes. / Joseph, Dickson; Büsselmann, Julian; Harms, Corinna; Henkensmeier, Dirk; Larsen, Mikkel Juul; Dyck, Alexander; Jang, Jong Hyun; Kim, Hyoung Juhn; Nam, SukWoo.
In: Journal of Membrane Science, Vol. 520, 15.12.2016, p. 723-730.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Porous Nafion membranes
AU - Joseph, Dickson
AU - Büsselmann, Julian
AU - Harms, Corinna
AU - Henkensmeier, Dirk
AU - Larsen, Mikkel Juul
AU - Dyck, Alexander
AU - Jang, Jong Hyun
AU - Kim, Hyoung Juhn
AU - Nam, SukWoo
PY - 2016/12/15
Y1 - 2016/12/15
N2 - By varying the amount of porogene (ortho-dichlorobenzene, ODB), and optimization of the dispersion process, two types of solvent cast Nafion membranes with an equivalent weight of 1100 g/mol sulfonic acid can be obtained reproducibly. One type is a dense membrane with a porous layer on one surface. The other membrane type shows a novel structure, consisting of small closed pores throughout the membrane and a single layer of large open pores on one side. In addition, some membranes showed a structural morphology between these two types, a membrane with a dense part and a porous part on top of each other. The latter membrane structure was not fully reproducible yet, but probably could be by carefully adjusting the formulation of the casting solution. Also the effect of the casting temperature on the morphology is shown. Fully porous membranes were characterized for their water permeability, ion conductivity, mechanical properties, their performance in the fuel cell and the hydrogen crossover. While the fully porous membranes are not expected to be part of a real fuel cell, we expect that the new morphologies will inspire applied research, e.g. in which the pores are filled with electrolyte or material or a catalyst is blended into the polymer.
AB - By varying the amount of porogene (ortho-dichlorobenzene, ODB), and optimization of the dispersion process, two types of solvent cast Nafion membranes with an equivalent weight of 1100 g/mol sulfonic acid can be obtained reproducibly. One type is a dense membrane with a porous layer on one surface. The other membrane type shows a novel structure, consisting of small closed pores throughout the membrane and a single layer of large open pores on one side. In addition, some membranes showed a structural morphology between these two types, a membrane with a dense part and a porous part on top of each other. The latter membrane structure was not fully reproducible yet, but probably could be by carefully adjusting the formulation of the casting solution. Also the effect of the casting temperature on the morphology is shown. Fully porous membranes were characterized for their water permeability, ion conductivity, mechanical properties, their performance in the fuel cell and the hydrogen crossover. While the fully porous membranes are not expected to be part of a real fuel cell, we expect that the new morphologies will inspire applied research, e.g. in which the pores are filled with electrolyte or material or a catalyst is blended into the polymer.
KW - Morphology
KW - Nafion dispersion
KW - Porosity
KW - Porous Nafion membranes
KW - Water transport
UR - http://www.scopus.com/inward/record.url?scp=84983670604&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84983670604&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2016.08.025
DO - 10.1016/j.memsci.2016.08.025
M3 - Article
AN - SCOPUS:84983670604
VL - 520
SP - 723
EP - 730
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
ER -