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

Shogo Takamuku; Patrick Jannasch; Peter Brilner Lund

doi:10.1002/marc.201000683

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/journal › Poster › Communication

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 language	English
Publication date	Feb 2011
Number of pages	1
DOIs	https://doi.org/10.1002/marc.201000683
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

Documents & Links

10.1002/marc.201000683

Cite this

@conference{57f4c9a5dd13428a961684bd56b9e81b,

title = "Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains",

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.",

author = "Shogo Takamuku and Patrick Jannasch and Lund, {Peter Brilner}",

year = "2011",

month = feb,

doi = "10.1002/marc.201000683",

language = "English",

note = "Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011 ; Conference date: 20-02-2011 Through 23-02-2011",

}

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

T2 - Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2011

Y2 - 20 February 2011 through 23 February 2011

ER -