ISIS Neutron and Muon Source Data Journal

Bi0.775Ln0.225O1.5 (Ln = La, Dy) Oxide Ion Conductors: Local Structure, Complex Superstructures and Structural Phase Transitions

Abstract: Ionic conductivity is a property where a material is able to conduct electricity through the movement of ions. Oxide ion conductors can be used in solid oxide fuel cells, which can be used to burn fuels more efficiently. High temperature delta-Bi2O3 is the best oxide conductor known with a conductivity of 1 S/cm at 750 °C, but it is only stable from 730 °C to 804 °C. By doping the lanthanides La and Dy, stable structures can be performed with conductivity of 0.01 S/cm at temperatures of 550 °C and 700 °C respectively, outperforming the currently-used yttria stabilised zirconia, which needs a temperature of 800 °C for the same conductivity. The purpose of this experiment is to investigate the structural features on an atomic scale of the materials Bi0.775Ln0.225O1.5 (Ln = La, Dy) to understand why they are good ionic conductors.

Principal Investigator: Professor Ivana Evans
Experimenter: Dr Phil Chater
Experimenter: Professor John Evans
Local Contact: Dr Helen Playford
Experimenter: Dr Matthew Chambers
Experimenter: Dr Matthew Tucker

DOI: 10.5286/ISIS.E.RB1710023

ISIS Experiment Number: RB1710023

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Ivana Evans et al; (2017): Bi0.775Ln0.225O1.5 (Ln = La, Dy) Oxide Ion Conductors: Local Structure, Complex Superstructures and Structural Phase Transitions, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1710023

Data is released under the CC-BY-4.0 license.