Fabrication and electrochemical characterizations of Nd2NiO4+δ-Ce0.8Gd0.2O2−δ composite cathodes for anode-supported intermediate temperature solid oxide fuel cells

•NNO-CGO composites as potential cathode materials were investigated on IT-SOFCs.•IT-SOFCs were fabricated with YSZ as the electrolyte in size of 50 mm×50mm.•NNO-CGO cathode layers were sintered on YSZ electrolyte via low-temperature process.•The optimal sintering temperature and proportions of NNO-CGO were determined.•70NNO-30CGO composite can be good cathode candidate for IT-SOFCs with YSZ electrolyte.