Asymmetric proton-conducting membrane made by photopolymerization
Abstract
Proton-conducting membranes with interpenetrating polymer network morphology have been frequently considered in recent years for potential replacement of standard Nafion membranes in direct methanol fuel cells. Asymmetric membranes comprising protonconducting channels of cross-linked sulfonic acid functionalized ionomers embedded within a matrix of thermally-resistant, glassy polymer were prepared by photopolymerization starting from a polymer solution and evaluated in our laboratories. These membranes have an integral top skin layer with fine proton-conducting channels, which serves as a barrier against
methanol crossover, on top of a coarser proton-conducting support. Conductivity of asymmetric membranes over a range of initial polymer concentrations and ion-exchange capacities (IEC) was just slightly lower than for the corresponding symmetric membranes. Methanol barrier properties of asymmetric proton-conducting membranes were better than that of the state-of-the art Nafion 115 mem...brane. The crosslinking agent functionality had a major effect on membrane conductivity. Use of trifunctional crosslinking agents resulted in significantly higher conductivities than those obtained with bifunctional agents, even surpassing the conductivity of Nafion membranes.
Keywords:
proton-conducting membranes / polymer networks / Nafion / fuel cellsSource:
RadTech Europe 2011 - Abstract Book, 2011, 129-129Publisher:
- Basel : RadTech Europe
Funding / projects:
- MULTIPLAT - Biomimetic Ultrathin Structures as a Multipurpose Platform for Nanotechnology-Based Products (EU-228943)
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Radovanović, Filip AU - Kellner, Michael AU - Matović, Jovan AU - Liska, Robert PY - 2011 UR - https://dais.sanu.ac.rs/123456789/790 AB - Proton-conducting membranes with interpenetrating polymer network morphology have been frequently considered in recent years for potential replacement of standard Nafion membranes in direct methanol fuel cells. Asymmetric membranes comprising protonconducting channels of cross-linked sulfonic acid functionalized ionomers embedded within a matrix of thermally-resistant, glassy polymer were prepared by photopolymerization starting from a polymer solution and evaluated in our laboratories. These membranes have an integral top skin layer with fine proton-conducting channels, which serves as a barrier against methanol crossover, on top of a coarser proton-conducting support. Conductivity of asymmetric membranes over a range of initial polymer concentrations and ion-exchange capacities (IEC) was just slightly lower than for the corresponding symmetric membranes. Methanol barrier properties of asymmetric proton-conducting membranes were better than that of the state-of-the art Nafion 115 membrane. The crosslinking agent functionality had a major effect on membrane conductivity. Use of trifunctional crosslinking agents resulted in significantly higher conductivities than those obtained with bifunctional agents, even surpassing the conductivity of Nafion membranes. PB - Basel : RadTech Europe C3 - RadTech Europe 2011 - Abstract Book T1 - Asymmetric proton-conducting membrane made by photopolymerization SP - 129 EP - 129 UR - https://hdl.handle.net/21.15107/rcub_dais_790 ER -
@conference{ author = "Radovanović, Filip and Kellner, Michael and Matović, Jovan and Liska, Robert", year = "2011", abstract = "Proton-conducting membranes with interpenetrating polymer network morphology have been frequently considered in recent years for potential replacement of standard Nafion membranes in direct methanol fuel cells. Asymmetric membranes comprising protonconducting channels of cross-linked sulfonic acid functionalized ionomers embedded within a matrix of thermally-resistant, glassy polymer were prepared by photopolymerization starting from a polymer solution and evaluated in our laboratories. These membranes have an integral top skin layer with fine proton-conducting channels, which serves as a barrier against methanol crossover, on top of a coarser proton-conducting support. Conductivity of asymmetric membranes over a range of initial polymer concentrations and ion-exchange capacities (IEC) was just slightly lower than for the corresponding symmetric membranes. Methanol barrier properties of asymmetric proton-conducting membranes were better than that of the state-of-the art Nafion 115 membrane. The crosslinking agent functionality had a major effect on membrane conductivity. Use of trifunctional crosslinking agents resulted in significantly higher conductivities than those obtained with bifunctional agents, even surpassing the conductivity of Nafion membranes.", publisher = "Basel : RadTech Europe", journal = "RadTech Europe 2011 - Abstract Book", title = "Asymmetric proton-conducting membrane made by photopolymerization", pages = "129-129", url = "https://hdl.handle.net/21.15107/rcub_dais_790" }
Radovanović, F., Kellner, M., Matović, J.,& Liska, R.. (2011). Asymmetric proton-conducting membrane made by photopolymerization. in RadTech Europe 2011 - Abstract Book Basel : RadTech Europe., 129-129. https://hdl.handle.net/21.15107/rcub_dais_790
Radovanović F, Kellner M, Matović J, Liska R. Asymmetric proton-conducting membrane made by photopolymerization. in RadTech Europe 2011 - Abstract Book. 2011;:129-129. https://hdl.handle.net/21.15107/rcub_dais_790 .
Radovanović, Filip, Kellner, Michael, Matović, Jovan, Liska, Robert, "Asymmetric proton-conducting membrane made by photopolymerization" in RadTech Europe 2011 - Abstract Book (2011):129-129, https://hdl.handle.net/21.15107/rcub_dais_790 .