In-situ diagnostic tools for hydrogen transfer leak characterization in PEM fuel cell stacks part II: Operational applications

Niroumand, Amir M.; Homayouni, Hooman; DeVaal, Jake; Golnaraghi, Farid; Kjeang, Erik

doi:10.1016/j.jpowsour.2016.05.019

Journal of Power Sources

2016

DOI: 10.1016/j.jpowsour.2016.05.019

|View full text |Cite

In-situ diagnostic tools for hydrogen transfer leak characterization in PEM fuel cell stacks part II: Operational applications

Amir M. Niroumand

Hooman Homayouni

Jake DeVaal

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2017

2022

Publication Types

Select...

Article6

Relationship

Self Cite1

Independent5

Authors

Journals

Cited by 15 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 To realize a significant shift to FCEVs, the transportation industry will require the development of diagnostic equipment and analytical tools to monitor the performance and state of the health of the PEFC system during all stages of its life cycle, such as during research and development, manufacturing, normal operation, and maintenance. [4][5][6] Specially devised and developed diagnostic tools are needed to provide information on operating parameters and conditions of the components of a PEFC during all phases of this cycle.…”

mentioning

confidence: 99%

Electrochemical Pressure Impedance Spectroscopy for Polymer Electrolyte Fuel Cells via Back-Pressure Control

Zhang

Homayouni

Gates

et al. 2022

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

Electrochemical pressure impedance spectroscopy (EPIS) analyzes the voltage response of a polymer electrolyte fuel cell (PEFC) as a function of an applied pressure signal in the frequency domain. EPIS is similar to electrochemical impedance spectroscopy and its development was inspired by the diagnostic capabilities of the latter. The EPIS introduced in this work modulates the cathode pressure of a PEFC with a sinusoidal signal through the use of a back-pressure controller, and monitors the cell voltage while holding the cell at a constant current. A sinusoidal pressure wave propagates along the flow field channels because of this pressure modulation. This pressure wave impacts local reaction rates and transport properties in the cathode, resulting in a sinusoidal voltage response. The amplitude ratio and phase difference between these two sinusoidal waves entail diagnostic information on processes that take place within the PEFC. To demonstrate the utility of the EPIS technique, experiments have been carried out to measure and analyze the frequency response of PEFCs with two different flow fields. A parametric study has been conducted to characterize the effect of pressure oscillation amplitude, load, oxygen concentration, oxygen stoichiometry and cathode gas flow rate on the EPIS signal.

show abstract

mentioning

confidence: 99%

Electrochemical Pressure Impedance Spectroscopy for Polymer Electrolyte Fuel Cells via Back-Pressure Control

Zhang

Homayouni

Gates

et al. 2022

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

In Situ and Operando Characterization of Proton Exchange Membrane Fuel Cells

2019

View full text Add to dashboard Cite

For proton-exchange-membrane fuel cells (PEMFCs) to become a mainstream energy source, significant improvements in their performance, durability, and efficiency are necessary. To improve their durability, there must be a solid understanding of how the structural and electrochemical processes are affected during operation to propose mitigation strategies. To this aim, in situ and operando characterization techniques locally identify structural and electrochemical processes, which cannot be captured using conventional techniques. Nevertheless, linking these properties in the same geometric area has been challenging due to its inherent limitations, such as sample size and imaging resolution. This has created a knowledge gap in structure-to-electrochemical performance relationships as operation and degradation unevenly affect different areas of the cell.

show abstract

Recent development on performance modelling and fault diagnosis of fuel cell systems

Sinha

Mondal

2017

Int. J. Dynam. Control

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

In-situ diagnostic tools for hydrogen transfer leak characterization in PEM fuel cell stacks part II: Operational applications

Cited by 15 publications

References 24 publications

Electrochemical Pressure Impedance Spectroscopy for Polymer Electrolyte Fuel Cells via Back-Pressure Control

Electrochemical Pressure Impedance Spectroscopy for Polymer Electrolyte Fuel Cells via Back-Pressure Control

In Situ and Operando Characterization of Proton Exchange Membrane Fuel Cells

Recent development on performance modelling and fault diagnosis of fuel cell systems

Contact Info

Product

Resources

About