Faculty Advisor

Datta, Ravindra

Center

Nancy, France

Abstract

The water content of a fuel cell is crucial to performance, as are resistance values. This project studied a PEM fuel cell under varied feed flow rates and hydrogen concentrations, while imposing a current between 0.12 A/cm2 and 0.36 A/cm2. Fuel cell performance was analyzed through a water balance and Galvano Electrochemical Impedance Spectroscopy. Results showed that the charge transfer resistance decreases as current density increases; lower concentrations of hydrogen feed gas result in higher anode resistances but do not affect cathode resistance; net water flow is from the cathode to the anode; 50% and 100% hydrogen feed cause flooding unless the stoichiometric ratio is raised; lower hydrogen concentrations reduce flooding; and the two theoretical models accurately represent the data.

Publisher

Worcester Polytechnic Institute

Date Accepted

April 2010

Major

Chemical Engineering

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Chemical Engineering

Project Center

Nancy, France

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