Uncovering and controlling the mechanisms of surface chemical and electrochemical stability on perovskite oxides
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 10, 2020
- Accession Number
- AD1105842
Entities
People
- Bilge Yıldız
Organizations
- Massachusetts Institute of Technology