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Ionic Conductivity: Oxygen Ion Diffusion and Surface Exchange Properties of the α‐ and δ‐phases of Bi 2 O 3 (Adv. Energy Mater. 10/2014)
Author(s) -
Bayliss Ryan D.,
Cook Stuart N.,
Kotsantonis Sakis,
Chater Richard J.,
Kilner John A.
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201470049
Subject(s) - materials science , ionic conductivity , thermal diffusivity , oxygen , diffusion , ionic bonding , conductivity , oxide , phase transition , ion , phase (matter) , grain boundary , chemical physics , grain boundary diffusion coefficient , analytical chemistry (journal) , thermodynamics , chemistry , composite material , physics , microstructure , electrolyte , electrode , organic chemistry , chromatography , metallurgy
The structural transition from alpha‐ to delta‐Bi 2 O 3 is accompanied by one of the most extraordinary increases in functional properties known in solid state chemistry: a transition in oxide ion conductivity of approximately seven orders of magnitude. In article number 1301575, John A. Kilner and co‐workers directly quantify this property for the first time and identify further remarkable properties, including extraordinarily high oxygen surface exchange in the delta phase and a four orders of magnitude enhancement in grain boundary oxygen diffusivity in the alpha phase.