Reactive Bonding of Anode and Interconnect in Solid Oxide Fuel Cells

摘要

Reactive bonding method has been developed for both anode to anode and anode to interconnect bonding in solid oxide fuel cells. The bonding can be accomplished at subsintering temperature of 1250℃. The addition of reactive ingredients such as tungsten compound in the bonding materials increases the bond strength by many fold, producing an 8 MPa bond strength at higher concentrations. The bond strength is measured by lap-joint shear testing. The importance of the type of reactive compound employed, the hydrogen annealing effect on the bond strength, and the interface reaction issues are discussed.