B214 MCFCの電解質揮発現象の可視化

電解質量の影響

抄録

Volatilizing of molten carbonate as electrolyte in Molten Carbonate Fuel Cell (MCFC) is one of degradation factors. The Volatilization of the molten carbonate brings the cross-leak and the corrosion of the metallic materials. Moreover, the piping blockage caused by solidification of the volatile chemical species in piping will be happened at lowering temperature. Especially, since the reforming catalysts filled to the anode channel in Direct Internal Reforming Molten Carbonate Fuel Cells (DIR-MCFC) are polluted by volatile species from the molten carbonate, volatilizing of the molten carbonate is an important issue. However, the behavior of molten carbonate volatile issue has been not elucidated, since the volatilization volume is too small amount to analyze them. Last symposium, we informed that at anode side, amount of volatilized particle was increasing with increasing current density. Although volatilization phenomenon was observed at cathode side, there was no relationship between amount of volatilized particle and current density. The volatile chemical species from anode and cathode were potassium rich composition.