Abstract
Current distribution in a Polymer Electrolyte Fuel Cell (PEFC) was determined by measuring a magnetic field around the PEFC with a Magneto-Impedance sensor. The measured magnetic field strength was converted to the distribution of generation current with the Biot-Savart's law. This method was verified with a specific separator under a PEFC running condition. The specific separator was made of acrylics, and carbon conductors were installed inside it. Current distribution was also measured with the specific separator. Comparison between these current distributions indicated very good agreement. The validity of the present method to determine current distribution in the PEFC was confirmed.
