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

Shogo Takamuku, Patrick Jannasch, Peter Brilner Lund

Research output: Contribution to conference without publisher/journalPosterCommunication

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.
Original languageEnglish
Publication dateFeb 2011
Number of pages1
DOIs
Publication statusPublished - Feb 2011
EventAdvances in Polymer Electrolyte Membrane Fuel Cell Systems 2011 - Asilomar Conference Grounds, Pacific Grove, United States
Duration: 20. Feb 201123. Feb 2011

Conference

ConferenceAdvances in Polymer Electrolyte Membrane Fuel Cell Systems 2011
LocationAsilomar Conference Grounds
CountryUnited States
CityPacific Grove
Period20/02/201123/02/2011

Cite this

Takamuku, S., Jannasch, P., & Lund, P. B. (2011). Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains. Poster session presented at Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, United States. 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 presented at Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, United States.1 p.
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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, United States, 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 presented at Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, United States.

Research output: Contribution to conference without publisher/journalPosterCommunication

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T1 - Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains

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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.

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M3 - Poster

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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 presented at Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011, Pacific Grove, United States. https://doi.org/10.1002/marc.201000683