Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains

Shogo Takamuku, Patrick Jannasch, Peter Brilner Lund

Publikation: Konferencebidrag uden forlag/tidsskriftPosterFormidling

Resumé

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.
OriginalsprogEngelsk
Publikationsdatofeb. 2011
Antal sider1
DOI
StatusUdgivet - feb. 2011
BegivenhedAdvances in Polymer Electrolyte Membrane Fuel Cell Systems 2011 - Asilomar Conference Grounds, Pacific Grove, USA
Varighed: 20. feb. 201123. feb. 2011

Konference

KonferenceAdvances in Polymer Electrolyte Membrane Fuel Cell Systems 2011
LokationAsilomar Conference Grounds
LandUSA
ByPacific Grove
Periode20/02/201123/02/2011

Citer dette

Takamuku, S., Jannasch, P., & Lund, P. B. (2011). Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains. Poster session præsenteret på Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, USA. https://doi.org/10.1002/marc.201000683
Takamuku, Shogo ; Jannasch, Patrick ; Lund, Peter Brilner. / Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains. Poster session præsenteret på Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, USA.1 s.
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abstract = "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.",
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Takamuku, S, Jannasch, P & Lund, PB 2011, 'Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains', Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, USA, 20/02/2011 - 23/02/2011. https://doi.org/10.1002/marc.201000683

Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains. / Takamuku, Shogo; Jannasch, Patrick; Lund, Peter Brilner.

2011. Poster session præsenteret på Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, USA.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterFormidling

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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.

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Takamuku S, Jannasch P, Lund PB. Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains. 2011. Poster session præsenteret på Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, USA. https://doi.org/10.1002/marc.201000683