Yang Yu is Honored With MSE Outstanding PhD Dissertation Award

in MSE Spotlight Alumni, MSE Spotlight Research, NEWS

Congratulations to Yang Yu, recipient of the 2016 MSE Outstanding PhD Dissertation Award for his dissertation: Surface Segregation in Strontium Doped Lanthanum Cobalt Ferrite: Effect of Composition, Strain and Atmospheric Carbon Dioxide.

Advisor: Soumendra Basu

Yang YuYang Yu’s research involves the study and understanding of the surface stability of complex oxides used as cathode materials for solid oxide fuel cells. Using several state-of-the-art x-ray diffraction and electron and atomic-force microscopy techniques, the study demonstrated that at high temperatures, the surface of these materials is unstable under operating conditions, and is susceptible to surface segregation and nanoscale precipitate formation. A predictive model relating the propensity of precipitate formation to the oxide composition, lattice strain and the gas phase composition was developed.