Three-layered electrolyte membranes with acid reservoir for prolonged lifetime of high-temperature polymer electrolyte membrane fuel cells

Arvind Kannan, David Aili, Lars Nilausen Cleemann, Qingfeng Li, Jens Oluf Jensen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

High-temperature polymer electrolyte membrane fuel cells with phosphoric acid doped polybenzimidazole (PBI) are made with three-layered membranes. The central membrane layer is meant as an acid reservoir made from direct cast PBI with a higher acid content than the outermost layers, which are post doped membranes acting as barrier layers to limit the acid transport out of the central layer. Cells with three-layered membranes and others with normal single layered membranes are tested at 170 and 180 °C. At both temperatures, the cells with three-layered membranes show significantly lower voltage decay rates than the corresponding cells with single-layered membranes. Post doped PBI membranes based on linear or thermally crosslinked PBI are used for the barrier layers of the three-layered membranes and for the single-layered membranes in the test series at 180 °C. The acid loss rates assessed by acid collection at the fuel cell exhaust, are rather comparable. At 180 °C, the cells are tested for up to 10,000 h and voltage decay rates of 2.3 and 4.1 μVh-1 are measured for the cells with three-layered membranes and 14 and 11 μVh-1 for cells with single-layered membranes.
Original languageEnglish
JournalInternational Journal of Hydrogen Energy
Volume45
Issue number1
Pages (from-to)1008-1017
Number of pages10
ISSN0360-3199
DOIs
Publication statusPublished - 2020

Keywords

  • PEM fuel cell
  • Polybenzimidazole
  • Phosphoric acid reservoir
  • Membranes
  • Durability

Cite this

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title = "Three-layered electrolyte membranes with acid reservoir for prolonged lifetime of high-temperature polymer electrolyte membrane fuel cells",
abstract = "High-temperature polymer electrolyte membrane fuel cells with phosphoric acid doped polybenzimidazole (PBI) are made with three-layered membranes. The central membrane layer is meant as an acid reservoir made from direct cast PBI with a higher acid content than the outermost layers, which are post doped membranes acting as barrier layers to limit the acid transport out of the central layer. Cells with three-layered membranes and others with normal single layered membranes are tested at 170 and 180 °C. At both temperatures, the cells with three-layered membranes show significantly lower voltage decay rates than the corresponding cells with single-layered membranes. Post doped PBI membranes based on linear or thermally crosslinked PBI are used for the barrier layers of the three-layered membranes and for the single-layered membranes in the test series at 180 °C. The acid loss rates assessed by acid collection at the fuel cell exhaust, are rather comparable. At 180 °C, the cells are tested for up to 10,000 h and voltage decay rates of 2.3 and 4.1 μVh-1 are measured for the cells with three-layered membranes and 14 and 11 μVh-1 for cells with single-layered membranes.",
keywords = "PEM fuel cell, Polybenzimidazole, Phosphoric acid reservoir, Membranes, Durability",
author = "Arvind Kannan and David Aili and Cleemann, {Lars Nilausen} and Qingfeng Li and Jensen, {Jens Oluf}",
year = "2020",
doi = "10.1016/j.ijhydene.2019.10.186",
language = "English",
volume = "45",
pages = "1008--1017",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Three-layered electrolyte membranes with acid reservoir for prolonged lifetime of high-temperature polymer electrolyte membrane fuel cells

AU - Kannan, Arvind

AU - Aili, David

AU - Cleemann, Lars Nilausen

AU - Li, Qingfeng

AU - Jensen, Jens Oluf

PY - 2020

Y1 - 2020

N2 - High-temperature polymer electrolyte membrane fuel cells with phosphoric acid doped polybenzimidazole (PBI) are made with three-layered membranes. The central membrane layer is meant as an acid reservoir made from direct cast PBI with a higher acid content than the outermost layers, which are post doped membranes acting as barrier layers to limit the acid transport out of the central layer. Cells with three-layered membranes and others with normal single layered membranes are tested at 170 and 180 °C. At both temperatures, the cells with three-layered membranes show significantly lower voltage decay rates than the corresponding cells with single-layered membranes. Post doped PBI membranes based on linear or thermally crosslinked PBI are used for the barrier layers of the three-layered membranes and for the single-layered membranes in the test series at 180 °C. The acid loss rates assessed by acid collection at the fuel cell exhaust, are rather comparable. At 180 °C, the cells are tested for up to 10,000 h and voltage decay rates of 2.3 and 4.1 μVh-1 are measured for the cells with three-layered membranes and 14 and 11 μVh-1 for cells with single-layered membranes.

AB - High-temperature polymer electrolyte membrane fuel cells with phosphoric acid doped polybenzimidazole (PBI) are made with three-layered membranes. The central membrane layer is meant as an acid reservoir made from direct cast PBI with a higher acid content than the outermost layers, which are post doped membranes acting as barrier layers to limit the acid transport out of the central layer. Cells with three-layered membranes and others with normal single layered membranes are tested at 170 and 180 °C. At both temperatures, the cells with three-layered membranes show significantly lower voltage decay rates than the corresponding cells with single-layered membranes. Post doped PBI membranes based on linear or thermally crosslinked PBI are used for the barrier layers of the three-layered membranes and for the single-layered membranes in the test series at 180 °C. The acid loss rates assessed by acid collection at the fuel cell exhaust, are rather comparable. At 180 °C, the cells are tested for up to 10,000 h and voltage decay rates of 2.3 and 4.1 μVh-1 are measured for the cells with three-layered membranes and 14 and 11 μVh-1 for cells with single-layered membranes.

KW - PEM fuel cell

KW - Polybenzimidazole

KW - Phosphoric acid reservoir

KW - Membranes

KW - Durability

U2 - 10.1016/j.ijhydene.2019.10.186

DO - 10.1016/j.ijhydene.2019.10.186

M3 - Journal article

VL - 45

SP - 1008

EP - 1017

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 1

ER -