Impregnated nickel anodes for reduced-temperature solid oxide fuel cells based on thin electrolytes of doped LaGaO3

► Dual-scale porous Ni-LSGM composites are fabricated using impregnation method. ► Low ASR values of 0.011 Ω cm2 are obtained at 550 °C for the Ni-LSGM composite anodes. ► Power densities of 1.05 W cm−2 are obtained at 550 °C for LSGM-electrolyte fuel cells.