Performance of LaBaCo2O5+δ-Ag with B2O3-Bi2O3-PbO frit composite cathodes for intermediate-temperature solid oxide fuel cells

► B2O3-Bi2O3-PbO (BBP) frit can improve the adhesion and strength of cathode membrane. ► BBP frit will not damage the porous structure of cathode. ► BBP frit is effective for lowering the sintering temperature of cathode-Ag to 900 °C. ► Ag and BBP frit play important roles in improving the performance of LaBaCo2O5+δ.