Impedance characterization of high temperature proton exchange membrane fuel cell stack under the influence of carbon monoxide and methanol vapor

Christian Jeppesen, Pierpaolo Polverino, Søren Juhl Andreasen, Samuel Simon Araya, Simon Lennart Sahlin, Cesare Pianese, Søren Knudsen Kær*

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

7 Citations (Scopus)

Abstract

This work presents a comprehensive mapping of electrochemical impedance measurements under the influence of CO and methanol vapor contamination of the anode gas in a high temperature proton exchange membrane fuel cell, at varying load current. Electrical equivalent circuit model parameters based on experimental evaluation of electrochemical impedance spectroscopy measurements were used to quantify the changes caused by different contamination levels. The changes are generally in good agreement with what is found in the literature. It is shown that an increased level of CO contamination resulted in an increase in the high frequency and intermediate frequency impedances. When adding CO and methanol to the anode gas, the low frequency part of the impedance spectrum is especially affected at high load currents, which is clearly seen as a result of the high load current resolution used in this work. The negative effects of methanol vapor are found to be more pronounced on the series resistance. When CO and methanol vapor are both present in anode gas, the entire frequency spectrum and thereby all the equivalent circuit model parameters are affected. It is also shown that the trends of contamination effects are similar for all the test cases, namely, CO alone, methanol alone and a mix of the two, suggesting that effects of methanol may include oxidation into CO on the catalyst layer.
Original languageEnglish
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number34
Pages (from-to)21901-21912
Number of pages12
ISSN0360-3199
DOIs
Publication statusPublished - Aug 2017

Fingerprint

Proton exchange membrane fuel cells (PEMFC)
Carbon monoxide
carbon monoxide
fuel cells
Methanol
methyl alcohol
Vapors
impedance
vapors
membranes
protons
contamination
Contamination
Anodes
anodes
equivalent circuits
Equivalent circuits
Temperature
Gases
gases

Keywords

  • Fuel cell
  • PBI
  • Electrochemical impedance spectroscopy
  • CO
  • Methanol vapor
  • Equivalent electrical circuit

Cite this

@article{9db1055f3aa9489e9c51246c23eac7db,
title = "Impedance characterization of high temperature proton exchange membrane fuel cell stack under the influence of carbon monoxide and methanol vapor",
abstract = "This work presents a comprehensive mapping of electrochemical impedance measurements under the influence of CO and methanol vapor contamination of the anode gas in a high temperature proton exchange membrane fuel cell, at varying load current. Electrical equivalent circuit model parameters based on experimental evaluation of electrochemical impedance spectroscopy measurements were used to quantify the changes caused by different contamination levels. The changes are generally in good agreement with what is found in the literature. It is shown that an increased level of CO contamination resulted in an increase in the high frequency and intermediate frequency impedances. When adding CO and methanol to the anode gas, the low frequency part of the impedance spectrum is especially affected at high load currents, which is clearly seen as a result of the high load current resolution used in this work. The negative effects of methanol vapor are found to be more pronounced on the series resistance. When CO and methanol vapor are both present in anode gas, the entire frequency spectrum and thereby all the equivalent circuit model parameters are affected. It is also shown that the trends of contamination effects are similar for all the test cases, namely, CO alone, methanol alone and a mix of the two, suggesting that effects of methanol may include oxidation into CO on the catalyst layer.",
keywords = "Fuel cell, PBI, Electrochemical impedance spectroscopy, CO, Methanol vapor, Equivalent electrical circuit",
author = "Christian Jeppesen and Pierpaolo Polverino and Andreasen, {S{\o}ren Juhl} and Araya, {Samuel Simon} and Sahlin, {Simon Lennart} and Cesare Pianese and K{\ae}r, {S{\o}ren Knudsen}",
year = "2017",
month = "8",
doi = "10.1016/j.ijhydene.2017.07.094",
language = "English",
volume = "42",
pages = "21901--21912",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Pergamon Press",
number = "34",

}

Impedance characterization of high temperature proton exchange membrane fuel cell stack under the influence of carbon monoxide and methanol vapor. / Jeppesen, Christian; Polverino, Pierpaolo; Andreasen, Søren Juhl; Araya, Samuel Simon; Sahlin, Simon Lennart; Pianese, Cesare; Kær, Søren Knudsen.

In: International Journal of Hydrogen Energy, Vol. 42, No. 34, 08.2017, p. 21901-21912.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Impedance characterization of high temperature proton exchange membrane fuel cell stack under the influence of carbon monoxide and methanol vapor

AU - Jeppesen, Christian

AU - Polverino, Pierpaolo

AU - Andreasen, Søren Juhl

AU - Araya, Samuel Simon

AU - Sahlin, Simon Lennart

AU - Pianese, Cesare

AU - Kær, Søren Knudsen

PY - 2017/8

Y1 - 2017/8

N2 - This work presents a comprehensive mapping of electrochemical impedance measurements under the influence of CO and methanol vapor contamination of the anode gas in a high temperature proton exchange membrane fuel cell, at varying load current. Electrical equivalent circuit model parameters based on experimental evaluation of electrochemical impedance spectroscopy measurements were used to quantify the changes caused by different contamination levels. The changes are generally in good agreement with what is found in the literature. It is shown that an increased level of CO contamination resulted in an increase in the high frequency and intermediate frequency impedances. When adding CO and methanol to the anode gas, the low frequency part of the impedance spectrum is especially affected at high load currents, which is clearly seen as a result of the high load current resolution used in this work. The negative effects of methanol vapor are found to be more pronounced on the series resistance. When CO and methanol vapor are both present in anode gas, the entire frequency spectrum and thereby all the equivalent circuit model parameters are affected. It is also shown that the trends of contamination effects are similar for all the test cases, namely, CO alone, methanol alone and a mix of the two, suggesting that effects of methanol may include oxidation into CO on the catalyst layer.

AB - This work presents a comprehensive mapping of electrochemical impedance measurements under the influence of CO and methanol vapor contamination of the anode gas in a high temperature proton exchange membrane fuel cell, at varying load current. Electrical equivalent circuit model parameters based on experimental evaluation of electrochemical impedance spectroscopy measurements were used to quantify the changes caused by different contamination levels. The changes are generally in good agreement with what is found in the literature. It is shown that an increased level of CO contamination resulted in an increase in the high frequency and intermediate frequency impedances. When adding CO and methanol to the anode gas, the low frequency part of the impedance spectrum is especially affected at high load currents, which is clearly seen as a result of the high load current resolution used in this work. The negative effects of methanol vapor are found to be more pronounced on the series resistance. When CO and methanol vapor are both present in anode gas, the entire frequency spectrum and thereby all the equivalent circuit model parameters are affected. It is also shown that the trends of contamination effects are similar for all the test cases, namely, CO alone, methanol alone and a mix of the two, suggesting that effects of methanol may include oxidation into CO on the catalyst layer.

KW - Fuel cell

KW - PBI

KW - Electrochemical impedance spectroscopy

KW - CO

KW - Methanol vapor

KW - Equivalent electrical circuit

UR - http://www.scopus.com/inward/record.url?scp=85026390121&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2017.07.094

DO - 10.1016/j.ijhydene.2017.07.094

M3 - Journal article

AN - SCOPUS:85026390121

VL - 42

SP - 21901

EP - 21912

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 34

ER -