Uncovering and controlling the mechanisms of surface chemical and electrochemical stability on perovskite oxides
Technical Report,30 Sep 2016,29 Sep 2019
MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE United States
Pagination or Media Count:
Understanding the effects of surface composition, gas environment, and high temperatures on the oxygen exchangekinetics of functional perovskite oxides is essential to ensure high long-term stability for their applications in energytechnology and electronics. In this project, we have focused on the surface processes underlying one of their maindegradation mechanisms high-temperature surface segregation of dopants, leading to the formation inactive surfacephase. Based on the understanding of the segregation mechanism, we have also investigated a way to remove suchsurface degradation by applying electrical polarization.
- Electrochemical Energy Storage