Semester
Summer
Date of Graduation
2004
Document Type
Thesis
Degree Type
MS
College
Statler College of Engineering and Mineral Resources
Department
Lane Department of Computer Science and Electrical Engineering
Committee Chair
Roy S. Nutter, Jr.
Abstract
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.
Recommended Citation
Hetzer, Brian J., "Electrochemical impedance spectroscopy of proton exchange membrane fuel cell stacks" (2004). Graduate Theses, Dissertations, and Problem Reports. 1492.
https://researchrepository.wvu.edu/etd/1492