Anode Materials Development
The Anode Materials Development project is led by Research Team Member Xin Yang.
One of the most prominent advantages of Solid oxide fuel cells (SOFCs) is the diversity of Fuels including hydrogen, methane, ethane, propane, butane, methanol, dimethyl ether and ammonia. Unfortunately, the electrochemical performance of most of the existing SOFC materials using these hydrocarbon fuels tend to decrease obviously when compared to that of using pure hydrogen as fuel.
The direct use of hydrocarbon fuels is advantageous due to the low cost and high energy storage density. However, the use of hydrocarbon fuels in SOFCs causes several problems including carbon deposition and sulphur poisoning that result in lower performance and reduced durability. Recently, the B-site ordered double-perovskite Sr2MgMoO6-δ (SMM) was reported to have high resistance to carbon deposition and excellent tolerance to sulfur in natural gas. The La-doped SMM anode exhibited an enhanced electrochemical performance for SOFCs operating on moderately desulfurized natural gas. Additionally, Sr2FeMoO6-δ (SFM) possesses a high electrical conductivity, good thermal stability and thermal compatibility. It is expected that the B-site unordered double-perovskite are capable of facilitating high ion mobility in SOFC anodes for SOFCs. Therefore, it is necessary to conduct research to develop the B-site unordered double-perovskite anode materials by doping. The X-Ray diffraction pattern and crystal structure of an SFM anode are shown below.