La0.75Sr0.25Cr0.5Mn0.5O3−δ-Ce0.8Gd0.2O1.9 composite electrodes as anodes in LaGaO3-based direct carbon solid oxide fuel cells

Direct carbon solid oxide fuel cells (DC-SOFCs) are promising, green, and efficient power-generating devices that are fueled by solid carbons and comprise all-solid-state structures. Developing suitable anode materials for DC-SOFCs is a substantial scientific challenge. Herein we investigated the use of La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3− δ -Ce 0.8 Gd 0.2 O 1.9 (LSCM—GDC) composite electrodes as anodes for La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3− δ electrolyte-based DC-SOFCs, with Camellia oleifera shell char as the carbon fuel The LSCM—GDC-anode DC-SOFC delivered a maximum power density of 221 mW/cm 2 at 800 °C and it significantly improved to 425 mW/cm 2 after Ni nanoparticles were introduced into the LSCM—GDC anode through wet impregnation The microstructures of the prepared anodes were characterized, and the stability of the anode in a DC-SOFC and the influence of catalytic activity on open circuit voltage were studied The above results indicate that LSCM—GDC anode is promising to be applied in DC-SOFCs.