Electrolyte management is one of the key technologies in molten carbonate fuel cell(MCFC).To solve the electrolyte management problem

this paper proposed the temperature rise strategy during the first startup of diaphragm roasting

namely using hot-pressing method to prepare the electrolyte film and pretreat the electrolyte film before the unit cell was assembled and tested.The electrolyte film was heated at 260 ℃in muffle furnace for 5hours.Within temperature range from 100 ℃ to 450 ℃

the heating rate was kept at 0.5 ℃/min.An MCFC unit cell with area of 225cm2 was assembled employing the electrolyte film prepared by the above method

the performance test results show that

the electrolyte film unit cell had good performance if using the pure hydrogen as the fuel

the maximum output power density reached 85.2mW/cm2 at current density of 120mA/cm2.