Ion Transport and Surface Kinetics in Oxygen Ion Conducting Nanocrystalline Oxide Thin Films. (21st September 2015)

• Record Type: Journal Article
• Authors: Bae, Jiwoong; An, Jihwan; Kim, Young Beom; Gur, Turgut M; Prinz, Fritz B.
• Is Part Of: ECS transactions. Volume 69:Number 16(2015)
• Page Start: 31
• Page End: 38
• Publication Date: 2015-09-21
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06916.0031ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Nanocrystalline materials often exhibit extraordinary electrical and electrochemical properties related to high density of grain boundaries. In this regard, we have investigated grain boundary structure and grain boundary's role for ionic transport and surface kinetics using atomic simulations, electrochemical analysis and spectroscopic/spectrometric experiments. Thereby, it was found that the segregation of dopants and vacancies near grain boundaries facilitates oxygen exchange while impeding cross-boundary ionic transport.