Lowering the platinum loading of high temperature polymer electrolyte membrane fuel cells with acid doped polybenzimidazole membranes

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Membrane electrode assemblies (MEAs) with ultra-low Pt loading electrodes were prepared for high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) based on acid doped polybenzimidazole. With no electrode binders or ionomers, the triple phase boundary of the catalyst layer was established by the acid transfer from the acid doped membrane to the electrodes and can therefore be tailored by using catalysts with varied Pt to C ratios. With a loading of ca. 0.1 mgPtcm-2 on each electrode the best performance was obtained with electrodes prepared from 10 wt.% Pt/C due to the improved Pt dispersion, extended triple phase boundary upon the acid transfer and the alleviated acid flooding of the catalytic layer. The MEA delivered a peak power density of 482 mW cm-2 for H2/O2 and 321 mW cm-2 for H2/air, corresponding to an overall Pt utilization of 2.5 and 1.7 kW gPt-1, respectively. The durability test revealed no net voltage decay during more than 1700 h of uninterrupted operation at 200 mA cm-2 and 160 °C.
Original languageEnglish
JournalJournal of Power Sources
Volume293
Pages (from-to)51-56
Number of pages6
ISSN0378-7753
DOIs
Publication statusPublished - 2015

Keywords

  • Binderless
  • Flooding
  • High temperature PEMFC
  • PBI
  • Polybenzimidazole
  • Reduced platinum loading
  • Catalysts
  • Durability
  • Electrodes
  • Electrolytes
  • Floods
  • Fuel cells
  • Membranes
  • Oil well flooding
  • Platinum
  • Polyelectrolytes
  • Polymer membrane electrodes
  • Proton exchange membrane fuel cells (PEMFC)
  • High-temperature PEMFC
  • Platinum loadings
  • Solid electrolytes

Cite this

@article{7d07fb699482479e862637caffc984cc,
title = "Lowering the platinum loading of high temperature polymer electrolyte membrane fuel cells with acid doped polybenzimidazole membranes",
abstract = "Membrane electrode assemblies (MEAs) with ultra-low Pt loading electrodes were prepared for high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) based on acid doped polybenzimidazole. With no electrode binders or ionomers, the triple phase boundary of the catalyst layer was established by the acid transfer from the acid doped membrane to the electrodes and can therefore be tailored by using catalysts with varied Pt to C ratios. With a loading of ca. 0.1 mgPtcm-2 on each electrode the best performance was obtained with electrodes prepared from 10 wt.{\%} Pt/C due to the improved Pt dispersion, extended triple phase boundary upon the acid transfer and the alleviated acid flooding of the catalytic layer. The MEA delivered a peak power density of 482 mW cm-2 for H2/O2 and 321 mW cm-2 for H2/air, corresponding to an overall Pt utilization of 2.5 and 1.7 kW gPt-1, respectively. The durability test revealed no net voltage decay during more than 1700 h of uninterrupted operation at 200 mA cm-2 and 160 °C.",
keywords = "Binderless, Flooding, High temperature PEMFC, PBI, Polybenzimidazole, Reduced platinum loading, Catalysts, Durability, Electrodes, Electrolytes, Floods, Fuel cells, Membranes, Oil well flooding, Platinum, Polyelectrolytes, Polymer membrane electrodes, Proton exchange membrane fuel cells (PEMFC), High-temperature PEMFC, Platinum loadings, Solid electrolytes",
author = "Fernandez, {Santiago Martin} and Qingfeng Li and Jensen, {Jens Oluf}",
year = "2015",
doi = "10.1016/j.jpowsour.2015.05.031",
language = "English",
volume = "293",
pages = "51--56",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

TY - JOUR

T1 - Lowering the platinum loading of high temperature polymer electrolyte membrane fuel cells with acid doped polybenzimidazole membranes

AU - Fernandez, Santiago Martin

AU - Li, Qingfeng

AU - Jensen, Jens Oluf

PY - 2015

Y1 - 2015

N2 - Membrane electrode assemblies (MEAs) with ultra-low Pt loading electrodes were prepared for high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) based on acid doped polybenzimidazole. With no electrode binders or ionomers, the triple phase boundary of the catalyst layer was established by the acid transfer from the acid doped membrane to the electrodes and can therefore be tailored by using catalysts with varied Pt to C ratios. With a loading of ca. 0.1 mgPtcm-2 on each electrode the best performance was obtained with electrodes prepared from 10 wt.% Pt/C due to the improved Pt dispersion, extended triple phase boundary upon the acid transfer and the alleviated acid flooding of the catalytic layer. The MEA delivered a peak power density of 482 mW cm-2 for H2/O2 and 321 mW cm-2 for H2/air, corresponding to an overall Pt utilization of 2.5 and 1.7 kW gPt-1, respectively. The durability test revealed no net voltage decay during more than 1700 h of uninterrupted operation at 200 mA cm-2 and 160 °C.

AB - Membrane electrode assemblies (MEAs) with ultra-low Pt loading electrodes were prepared for high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) based on acid doped polybenzimidazole. With no electrode binders or ionomers, the triple phase boundary of the catalyst layer was established by the acid transfer from the acid doped membrane to the electrodes and can therefore be tailored by using catalysts with varied Pt to C ratios. With a loading of ca. 0.1 mgPtcm-2 on each electrode the best performance was obtained with electrodes prepared from 10 wt.% Pt/C due to the improved Pt dispersion, extended triple phase boundary upon the acid transfer and the alleviated acid flooding of the catalytic layer. The MEA delivered a peak power density of 482 mW cm-2 for H2/O2 and 321 mW cm-2 for H2/air, corresponding to an overall Pt utilization of 2.5 and 1.7 kW gPt-1, respectively. The durability test revealed no net voltage decay during more than 1700 h of uninterrupted operation at 200 mA cm-2 and 160 °C.

KW - Binderless

KW - Flooding

KW - High temperature PEMFC

KW - PBI

KW - Polybenzimidazole

KW - Reduced platinum loading

KW - Catalysts

KW - Durability

KW - Electrodes

KW - Electrolytes

KW - Floods

KW - Fuel cells

KW - Membranes

KW - Oil well flooding

KW - Platinum

KW - Polyelectrolytes

KW - Polymer membrane electrodes

KW - Proton exchange membrane fuel cells (PEMFC)

KW - High-temperature PEMFC

KW - Platinum loadings

KW - Solid electrolytes

U2 - 10.1016/j.jpowsour.2015.05.031

DO - 10.1016/j.jpowsour.2015.05.031

M3 - Journal article

VL - 293

SP - 51

EP - 56

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -