Abstract
sively placed in ortho positions to the many sulfone bridges, giving these locks IECs of 4.1 and 4.6 meqg1, respectively. Copolymer membranes with IECs of 1.4 meqg1 displayed well-connected hydrophilic nanophase domains and had decomposition temperatures at, or above, 300 °C under air. The copolymer with the tetrasulfonated tetraaryldisulfone segments showed a proton conductivity of 0.13 S/cm-1 at 80 8C under fully humidified conditions,
and surpassed that of a perfluorosulfonic acid membrane (NRE212) by a factor of 5 at –20 °C over time.
| Original language | English |
|---|---|
| Publication date | Feb 2011 |
| Number of pages | 1 |
| DOIs | |
| Publication status | Published - Feb 2011 |
| Event | Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011 - Asilomar Conference Grounds, Pacific Grove, United States Duration: 20. Feb 2011 → 23. Feb 2011 |
Conference
| Conference | Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011 |
|---|---|
| Location | Asilomar Conference Grounds |
| Country | United States |
| City | Pacific Grove |
| Period | 20/02/2011 → 23/02/2011 |
Cite this
}
Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains. / Takamuku, Shogo; Jannasch, Patrick; Lund, Peter Brilner.
2011. Poster session presented at Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, United States.Research output: Contribution to conference without publisher/journal › Poster › Communication
TY - CONF
T1 - Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains
AU - Takamuku, Shogo
AU - Jannasch, Patrick
AU - Lund, Peter Brilner
PY - 2011/2
Y1 - 2011/2
N2 - Two multiblock copoly(arylene ether sulfone)s with similar block lengths and ion exchange capacities (IECs) were prepared by a coupling reaction between a non-sulfonated precursor block and a highly sulfonated precursor block containing either fully disulfonated diarylsulfone or fully tetrasulfonated tetraaryldisulfone segments. The latter two precursor blocks were sulfonated via lithiation-sulfination reactions whereby the sulfonic acid groups were exclu-sively placed in ortho positions to the many sulfone bridges, giving these locks IECs of 4.1 and 4.6 meqg1, respectively. Copolymer membranes with IECs of 1.4 meqg1 displayed well-connected hydrophilic nanophase domains and had decomposition temperatures at, or above, 300 °C under air. The copolymer with the tetrasulfonated tetraaryldisulfone segments showed a proton conductivity of 0.13 S/cm-1 at 80 8C under fully humidified conditions,and surpassed that of a perfluorosulfonic acid membrane (NRE212) by a factor of 5 at –20 °C over time.
AB - Two multiblock copoly(arylene ether sulfone)s with similar block lengths and ion exchange capacities (IECs) were prepared by a coupling reaction between a non-sulfonated precursor block and a highly sulfonated precursor block containing either fully disulfonated diarylsulfone or fully tetrasulfonated tetraaryldisulfone segments. The latter two precursor blocks were sulfonated via lithiation-sulfination reactions whereby the sulfonic acid groups were exclu-sively placed in ortho positions to the many sulfone bridges, giving these locks IECs of 4.1 and 4.6 meqg1, respectively. Copolymer membranes with IECs of 1.4 meqg1 displayed well-connected hydrophilic nanophase domains and had decomposition temperatures at, or above, 300 °C under air. The copolymer with the tetrasulfonated tetraaryldisulfone segments showed a proton conductivity of 0.13 S/cm-1 at 80 8C under fully humidified conditions,and surpassed that of a perfluorosulfonic acid membrane (NRE212) by a factor of 5 at –20 °C over time.
U2 - 10.1002/marc.201000683
DO - 10.1002/marc.201000683
M3 - Poster
ER -