Microbial Fuel Cell with an Interior Cathode : Assessment of the Internal Resistance by Impedance Spectroscopy

Z H E N H E , ‡ N O R B E R T W A G N E R , § S H E L L E Y D . M I N T E E R , | A N D L A R G U S T . A N G E N E N T * , ‡ Department of Chemical Engineering and Environmental Engineering Science Program, Washington University in St. Louis, St. Louis, Missouri 63130, Institute for Technical Thermodynamics, German Aerospace Center, D-70569 Stuttgart, Germany, and Department of Chemistry, Saint Louis University, St. Louis, Missouri 63103