Journal of Power Sources, Vol.390, 181-185, 2018
Electrochemical performance of Ni0.8Cu0.2/Ce0.8Gd0.O-1.9 cermet anodes with functionally graded structures for intermediate-temperature solid oxide fuel cell fueled with syngas
The electrochemical performance of layered Ni0.8Cu0.2/Ce0.8Gd0.2O1.2 (GDC) cermet anodes is investigated for intermediate-temperature solid oxide fuel cells (IT-SOFCs) at 600 degrees C using humidified (3% H2O) model syngas with a molar ratio of H-2/CO = 3/2 as the fuel. From the results obtained, the electrochemical performance of the functionally graded multi-layered anodes is found to be superior to the mono-layered anodes. The test cell with a bi-layered anode consisting of 100 mass% Ni0.8Cu0.2/0 mass% GDC (10M/OE) and 70 mass% Ni0.8Cu0.2/30 mass % GDC (7M/3E) exhibits high power density. The test cell with a to-layered anode consisting of 10M/OE, 7M/3E, and 50 mass% Ni0.8Cu0.2/50 mass% GDC (5M/5E) exhibits an even higher power density, suggesting that 10M/OE and 5M/5E layers contribute to the current collecting part and active part, respectively.