Abstract:

Cermet anode material NiOScSZ and cathode material (La_0.8Sr_0.2)_0.98MnO₃ (LSM) were prepared via solid state reaction method. The performance electrolytesupported single cell of NiOScSZLSM exibited an output voltage of 0.9 V at 0.2 A described by currentvoltage characte
rized curve. The investigation on the endurance of the single cell indicates that the whole voltage decay is 0.02 V per 1 000 h（at a current density of 0.2
A/cm²）by electrochemical measurement. The main resource of it comes from cathodic overvoltage by galvanic current interruption method.

Key words: fuel cell, galvanic current interruption method, cathodic overvoltage, duality