High reactive Ce0.8Sm0.2O1.9 powders via a carbonate co-precipitation method as electrolytes for low-temperature solid oxide fuel cells

Electrical properties of samaria-doped ceria electrolytes from highly active powders

“…Preparation of Ce 0.8 Sm 0.2 O 1.9 via a carbonate precipitation method was described in detail in our previous work [15]. It was summarized as follows.…”

“…In our previous work, well-dispersed, nano-sized, spherical Ce 0.8 Sm 0.2 O 1.9 (SDC) powders were synthesized via a carbonate coprecipitation method with a dilute solution and at a low processing temperature [15]. SDC ceramics processed with such powders showed high conductivity and low activation energy for conductivity.…”

Composite electrolyte based on nanostructured Ce0.8Sm0.2O1.9(SDC) for low-temperature solid oxide fuel cells

“…Figure 5 shows the I-V and I-P curves of the cell. The maximum power density reaches 900 mW cm À2 at 6001C, which is much higher than some of the reports [5,6,[14][15][16] at the comparable operating temperatures. The excellent power density can be attributed to the highly ionic conductivity of the composite electrolyte and the highly electrocatalytic activity of the anode material and the cathode material.…”

Metal Oxide Nanoparticles

“…Homogeneous Ce 0.8 Sm 0.2 O 1.9 powders were prepared using a carbonate co-precipitation route to give particles of approximately 12 nm. [326] The powders were found to possess high sinterability, high conductivity and a low activation energy and were used in both the anode and the electrolyte in single cells. The powder was shown to be promising for use in lowtemperature (600°C) solid oxide fuel cells with a maximum power density of 400 mW cm À2 .…”