Electrochemical Impedance Parameter Extraction for Online Control of Reformed Methanol High Temperature PEM Fuel Cells

Sobi Thomas; Samuel Simon Araya; Simon Lennart Sahlin; Søren Knudsen Kær

doi:10.1007/978-3-030-37161-6_30

Electrochemical Impedance Parameter Extraction for Online Control of Reformed Methanol High Temperature PEM Fuel Cells

Sobi Thomas^*, Samuel Simon Araya, Simon Lennart Sahlin, Søren Knudsen Kær

^*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

Abstract

This work focuses towards online control strategy for detecting fuel and oxidant starvation and predicting an optimal stoichiometry for operation under different fuel compositions using the electrochemical impedance spectroscopy (EIS) parameter extraction method. The tests involve three fuel compositions, namely dry hydrogen, dry reformate (,, and) and wet reformate (,, and). The characterization of anode and cathode stoichiometry (both low and high) is carried out with each fuel composition by measuring electrochemical impedance spectroscopy (EIS) and current–voltage (IV) curves. The results suggest positive effects of humidified gas on the fuel cell stack performance. The changes in the mass transport resistance due to excess gas or gas starvation both on the anode and cathode could only be deduced using the EIS method. Online EIS measurement seems useful in deducing the optimal stoichiometry as the IV curves are unable to show the changes in the mass transport. Thus, to operate the fuel cell stack under an optimal fuel and oxidant utilization, an online EIS with parameter extraction algorithm can be helpful. This would ensure a better fuel and oxidant utilization and improve the system efficiency.

Original language	English
Title of host publication	ELECTRIMACS 2019 : Selected Papers
Editors	Walter Zamboni, Giovanni Petrone
Number of pages	9
Volume	1
Publisher	Springer
Publication date	Jan 2020
Pages	395-403
ISBN (Print)	978-3-030-37160-9
ISBN (Electronic)	978-3-030-37161-6
DOIs	https://doi.org/10.1007/978-3-030-37161-6_30
Publication status	Published - Jan 2020
Event	13th International Conference of the IMACS TC1 Committee, ELECTRIMACS 2019 - Salerno, Italy Duration: 21 May 2019 → 23 May 2019

Conference

Conference	13th International Conference of the IMACS TC1 Committee, ELECTRIMACS 2019
Country/Territory	Italy
City	Salerno
Period	21/05/2019 → 23/05/2019

Series	Lecture Notes in Electrical Engineering
Volume	604
ISSN	1876-1100

Keywords

Control
EIS
Fuel cell
HT-PEMFC
Online diagnostics

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@inproceedings{771795966fcf4d0186f68a01d350e223,

title = "Electrochemical Impedance Parameter Extraction for Online Control of Reformed Methanol High Temperature PEM Fuel Cells",

abstract = "This work focuses towards online control strategy for detecting fuel and oxidant starvation and predicting an optimal stoichiometry for operation under different fuel compositions using the electrochemical impedance spectroscopy (EIS) parameter extraction method. The tests involve three fuel compositions, namely dry hydrogen, dry reformate (,, and) and wet reformate (,, and). The characterization of anode and cathode stoichiometry (both low and high) is carried out with each fuel composition by measuring electrochemical impedance spectroscopy (EIS) and current–voltage (IV) curves. The results suggest positive effects of humidified gas on the fuel cell stack performance. The changes in the mass transport resistance due to excess gas or gas starvation both on the anode and cathode could only be deduced using the EIS method. Online EIS measurement seems useful in deducing the optimal stoichiometry as the IV curves are unable to show the changes in the mass transport. Thus, to operate the fuel cell stack under an optimal fuel and oxidant utilization, an online EIS with parameter extraction algorithm can be helpful. This would ensure a better fuel and oxidant utilization and improve the system efficiency.",

keywords = "Control, EIS, Fuel cell, HT-PEMFC, Online diagnostics",

author = "Sobi Thomas and Araya, {Samuel Simon} and Sahlin, {Simon Lennart} and K{\ae}r, {S{\o}ren Knudsen}",

year = "2020",

month = jan,

doi = "10.1007/978-3-030-37161-6_30",

language = "English",

isbn = "978-3-030-37160-9",

volume = "1",

series = "Lecture Notes in Electrical Engineering",

publisher = "Springer",

pages = "395--403",

editor = "Walter Zamboni and Giovanni Petrone",

booktitle = "ELECTRIMACS 2019",

address = "Germany",

note = "13th International Conference of the IMACS TC1 Committee, ELECTRIMACS 2019 ; Conference date: 21-05-2019 Through 23-05-2019",

}

Thomas, S, Araya, SS , Sahlin, SL & Kær, SK 2020, Electrochemical Impedance Parameter Extraction for Online Control of Reformed Methanol High Temperature PEM Fuel Cells. in W Zamboni & G Petrone (eds), ELECTRIMACS 2019: Selected Papers. vol. 1, Springer, Lecture Notes in Electrical Engineering, vol. 604, pp. 395-403, 13th International Conference of the IMACS TC1 Committee, ELECTRIMACS 2019, Salerno, Italy, 21/05/2019. https://doi.org/10.1007/978-3-030-37161-6_30

Electrochemical Impedance Parameter Extraction for Online Control of Reformed Methanol High Temperature PEM Fuel Cells. / Thomas, Sobi; Araya, Samuel Simon ; Sahlin, Simon Lennart et al.
ELECTRIMACS 2019: Selected Papers. ed. / Walter Zamboni; Giovanni Petrone. Vol. 1 Springer, 2020. p. 395-403 (Lecture Notes in Electrical Engineering, Vol. 604).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Electrochemical Impedance Parameter Extraction for Online Control of Reformed Methanol High Temperature PEM Fuel Cells

AU - Thomas, Sobi

AU - Araya, Samuel Simon

AU - Sahlin, Simon Lennart

AU - Kær, Søren Knudsen

PY - 2020/1

Y1 - 2020/1

N2 - This work focuses towards online control strategy for detecting fuel and oxidant starvation and predicting an optimal stoichiometry for operation under different fuel compositions using the electrochemical impedance spectroscopy (EIS) parameter extraction method. The tests involve three fuel compositions, namely dry hydrogen, dry reformate (,, and) and wet reformate (,, and). The characterization of anode and cathode stoichiometry (both low and high) is carried out with each fuel composition by measuring electrochemical impedance spectroscopy (EIS) and current–voltage (IV) curves. The results suggest positive effects of humidified gas on the fuel cell stack performance. The changes in the mass transport resistance due to excess gas or gas starvation both on the anode and cathode could only be deduced using the EIS method. Online EIS measurement seems useful in deducing the optimal stoichiometry as the IV curves are unable to show the changes in the mass transport. Thus, to operate the fuel cell stack under an optimal fuel and oxidant utilization, an online EIS with parameter extraction algorithm can be helpful. This would ensure a better fuel and oxidant utilization and improve the system efficiency.

AB - This work focuses towards online control strategy for detecting fuel and oxidant starvation and predicting an optimal stoichiometry for operation under different fuel compositions using the electrochemical impedance spectroscopy (EIS) parameter extraction method. The tests involve three fuel compositions, namely dry hydrogen, dry reformate (,, and) and wet reformate (,, and). The characterization of anode and cathode stoichiometry (both low and high) is carried out with each fuel composition by measuring electrochemical impedance spectroscopy (EIS) and current–voltage (IV) curves. The results suggest positive effects of humidified gas on the fuel cell stack performance. The changes in the mass transport resistance due to excess gas or gas starvation both on the anode and cathode could only be deduced using the EIS method. Online EIS measurement seems useful in deducing the optimal stoichiometry as the IV curves are unable to show the changes in the mass transport. Thus, to operate the fuel cell stack under an optimal fuel and oxidant utilization, an online EIS with parameter extraction algorithm can be helpful. This would ensure a better fuel and oxidant utilization and improve the system efficiency.

KW - Control

KW - EIS

KW - Fuel cell

KW - HT-PEMFC

KW - Online diagnostics

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DO - 10.1007/978-3-030-37161-6_30

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VL - 1

T3 - Lecture Notes in Electrical Engineering

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EP - 403

BT - ELECTRIMACS 2019

A2 - Zamboni, Walter

A2 - Petrone, Giovanni

PB - Springer

T2 - 13th International Conference of the IMACS TC1 Committee, ELECTRIMACS 2019

Y2 - 21 May 2019 through 23 May 2019

ER -

Electrochemical Impedance Parameter Extraction for Online Control of Reformed Methanol High Temperature PEM Fuel Cells

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