The polymer electrolyte fuel cell (PEFC) was characterized by the impedance measurement method. It is revealed the fuel cell has two inner resistances such as serial resistance (RS) and parallel resistance (RP). The parallel resistance is related to catalytic reaction resistance. The measured value of parallel resistance was depended on the applied DC current. In this paper, the proper measurement condition for the parallel resistance is discussed.
https://ror.org/01p7qe739 
