Electrochemical impedance spectroscopy of proton exchange membrane fuel cell stacks

Electrochemical Impedance Spectroscopy (EIS) is applied to a small, four cell Proton Exchange Membrane (PEM) fuel cell stack to examine the stack response as the load current changes. The measured stack response is compared to a simulated response generated by a stack model that has been developed using MATLAB. The results show that the model predicted well the behavior of the VI curve for currents less than 50 Amps. The model also qualitatively predicted the impedance response as a function of current and frequency. Because of apparent model incompleteness, it was not able to predict accurately the shape of the response in the complex plane at currents larger than 20 Amps and did not match the change in ohmic resistance with current.

Name thesis:degree_name

MS

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Lane Department of Computer Science and Electrical Engineering

Year dc:date.available

2004

Author dc:creator

• Hetzer, Brian J.

Contributors dc:contributor

• Roy S. Nutter, Jr.

• Electrical engineering
• Mechanical engineering
• Energy

Identifier

https://researchrepository.wvu.edu/etd/1492

OAI identifier oai:identifier

oai:researchrepository.wvu.edu:etd-2495