Fuel Cell Electrolytes of Polybenzimidazole Membranes Cross-linked with Bis(chloromethyl) Arenes

A. Kirkebæk, D. Aili*, B. Yue, A. Vassiliev, L. N. Cleemann, J. O. Jensen, Q. Li

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Cross‐linking of phosphoric acid doped polybenzimidazole membranes as fuel cell electrolytes represents an attractive approach to improving the mechanical robustness at a high acid loading. Numerous cross‐linking concepts have been reported in the literature, but a deeper understanding of how the cross‐linking chemistry affects the physicochemical properties of the membrane and its fuel cell performance and durability remains to be assessed. In this work, a series of cross‐linked membranes are prepared using cross‐linking agents of different regio‐chemistry and steric nature. It is shown, that the nature of the cross‐linking agent has a large impact on the effective degree of cross‐linking, which in turn determines the acid doping characteristics and ultimately the fuel cell performance and acid retention during long‐term operation.
Original languageEnglish
JournalFuel Cells
Volume18
Issue number6
Pages (from-to)688-697
ISSN1615-6846
DOIs
Publication statusPublished - 2018

Keywords

  • Cross-linking
  • Durability
  • Fuel Cells
  • Membranes
  • Polybenzimidazole
  • Proton Conductor

Cite this

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title = "Fuel Cell Electrolytes of Polybenzimidazole Membranes Cross-linked with Bis(chloromethyl) Arenes",
abstract = "Cross‐linking of phosphoric acid doped polybenzimidazole membranes as fuel cell electrolytes represents an attractive approach to improving the mechanical robustness at a high acid loading. Numerous cross‐linking concepts have been reported in the literature, but a deeper understanding of how the cross‐linking chemistry affects the physicochemical properties of the membrane and its fuel cell performance and durability remains to be assessed. In this work, a series of cross‐linked membranes are prepared using cross‐linking agents of different regio‐chemistry and steric nature. It is shown, that the nature of the cross‐linking agent has a large impact on the effective degree of cross‐linking, which in turn determines the acid doping characteristics and ultimately the fuel cell performance and acid retention during long‐term operation.",
keywords = "Cross-linking, Durability, Fuel Cells, Membranes, Polybenzimidazole, Proton Conductor",
author = "A. Kirkeb{\ae}k and D. Aili and B. Yue and A. Vassiliev and Cleemann, {L. N.} and Jensen, {J. O.} and Q. Li",
year = "2018",
doi = "10.1002/fuce.201800090",
language = "English",
volume = "18",
pages = "688--697",
journal = "Fuel Cells",
issn = "1615-6846",
publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",
number = "6",

}

Fuel Cell Electrolytes of Polybenzimidazole Membranes Cross-linked with Bis(chloromethyl) Arenes. / Kirkebæk, A.; Aili, D.; Yue, B.; Vassiliev, A.; Cleemann, L. N.; Jensen, J. O.; Li, Q.

In: Fuel Cells, Vol. 18, No. 6, 2018, p. 688-697.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Fuel Cell Electrolytes of Polybenzimidazole Membranes Cross-linked with Bis(chloromethyl) Arenes

AU - Kirkebæk, A.

AU - Aili, D.

AU - Yue, B.

AU - Vassiliev, A.

AU - Cleemann, L. N.

AU - Jensen, J. O.

AU - Li, Q.

PY - 2018

Y1 - 2018

N2 - Cross‐linking of phosphoric acid doped polybenzimidazole membranes as fuel cell electrolytes represents an attractive approach to improving the mechanical robustness at a high acid loading. Numerous cross‐linking concepts have been reported in the literature, but a deeper understanding of how the cross‐linking chemistry affects the physicochemical properties of the membrane and its fuel cell performance and durability remains to be assessed. In this work, a series of cross‐linked membranes are prepared using cross‐linking agents of different regio‐chemistry and steric nature. It is shown, that the nature of the cross‐linking agent has a large impact on the effective degree of cross‐linking, which in turn determines the acid doping characteristics and ultimately the fuel cell performance and acid retention during long‐term operation.

AB - Cross‐linking of phosphoric acid doped polybenzimidazole membranes as fuel cell electrolytes represents an attractive approach to improving the mechanical robustness at a high acid loading. Numerous cross‐linking concepts have been reported in the literature, but a deeper understanding of how the cross‐linking chemistry affects the physicochemical properties of the membrane and its fuel cell performance and durability remains to be assessed. In this work, a series of cross‐linked membranes are prepared using cross‐linking agents of different regio‐chemistry and steric nature. It is shown, that the nature of the cross‐linking agent has a large impact on the effective degree of cross‐linking, which in turn determines the acid doping characteristics and ultimately the fuel cell performance and acid retention during long‐term operation.

KW - Cross-linking

KW - Durability

KW - Fuel Cells

KW - Membranes

KW - Polybenzimidazole

KW - Proton Conductor

U2 - 10.1002/fuce.201800090

DO - 10.1002/fuce.201800090

M3 - Journal article

VL - 18

SP - 688

EP - 697

JO - Fuel Cells

JF - Fuel Cells

SN - 1615-6846

IS - 6

ER -