Abstract
The aim of the present work is to establish a new technique that can measure current distribution in a Polymer Electrolyte Fuel Cell (PEFC) without contact with the object. When a fuel cell is operated, a magnetic field is caused around the fuel cell by a generated current. The magnetic field strength is measured with a magnetic sensor, and then it is converted to the value of the generated current with the Biot-Savart's law. This technique was verified under the PEFC operating conditions with a specific separator, which could measure real currents in the PEFC. The current distribution determined from a magnetic field is proportional to the real current distribution measured with the specific separator. It appeared that the present technique was useful for measuring the current distribution in PEFCs.
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