Development of the Oxide Ion Conductor Na0.5Bi0.5TiO3 (NBT) for Solid Oxide Cells

Christopher Tumilson, Chris Hardacre, Johan Jacquemin, Rachael H Elder, Derek C Sinclair

Research output: Contribution to conferenceAbstract

Abstract

Na0.5Bi0.5TiO3 (NBT) is a well-known lead-free piezoelectric material with potential to replace lead zirconate titanate (PZT),1 however high leakage conductivity for the material has been widely reported.2 Through a combination of Impedance Spectroscopy (IS), O2- ion transference (EMF) number experiments and O18 tracer diffusion measurements, combined with Time-of-flight Secondary Ion Mass Spectrometry (TOFSIMS), it was identified that this leakage conductivity was due to oxygen ion conductivity. The volatilization of bismuth during synthesis, causing oxygen vacancies, is believed to be responsible for the leakage conductivity.3 The oxide-ion conductivity, when doped with magnesium, exceeds that of yttria-stabilized zirconia (YSZ) at ~500 °C,3 making it a potential electrolyte material for Intermediate Temperature Solid Oxide Cells (ITSOCs). Figure 1 shows the comparison of bulk oxide ion conductivity between 2 at.% Mg-doped NBT and other known oxide ion conductors.

As part of the UK wide £5.7m 4CU project, research has concentrated on trying to develop NBT for use in Intermediate Temperature Solid Oxide Cells (ITSOCS). With the aim of achieving mixed ionic and electronic conduction, transition metals were chemically doped on to the Ti-site. A range of experimental techniques was used to characterize the materials aimed at investigating both conductivity and material structure (Scanning Electron Microscopy (SEM), IS, X-ray Photoelectron Spectroscopy (XPS) and X-ray Absorption Spectroscopy (XAS)). The potential for NBT as an ITSOC material, as well as the challenges of developing the material, will be discussed.

(1) Takenaka T. et al. Jpn. J. Appl. Phys 1999, 30, 2236.

(2) Hiruma Y. et al. J. Appl. Phys 2009, 105, 084112.

(3) Li. M. et al. Nature Materials 2013, 13, 31.
Original languageEnglish
Pages1400
Number of pages1
Publication statusPublished - 01 Apr 2016
Event229th ECS Meeting - California, San Diego, United States
Duration: 29 May 201602 Jun 2016
http://ma.ecsdl.org/site/archive/MA2016-01.xhtml

Conference

Conference229th ECS Meeting
CountryUnited States
CitySan Diego
Period29/05/201602/06/2016
Internet address

Fingerprint

Oxides
Ions
Bismuth
X ray absorption spectroscopy
Piezoelectric materials
Yttria stabilized zirconia
Oxygen vacancies
Secondary ion mass spectrometry
Vaporization
Temperature
Magnesium
Electrolytes
Transition metals
X ray photoelectron spectroscopy
Spectroscopy
Oxygen
Scanning electron microscopy
Electric potential
Experiments

Cite this

Tumilson, C., Hardacre, C., Jacquemin, J., Elder, R. H., & Sinclair, D. C. (2016). Development of the Oxide Ion Conductor Na0.5Bi0.5TiO3 (NBT) for Solid Oxide Cells. 1400. Abstract from 229th ECS Meeting , San Diego, United States.
Tumilson, Christopher ; Hardacre, Chris ; Jacquemin, Johan ; Elder, Rachael H ; Sinclair, Derek C. / Development of the Oxide Ion Conductor Na0.5Bi0.5TiO3 (NBT) for Solid Oxide Cells. Abstract from 229th ECS Meeting , San Diego, United States.1 p.
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Tumilson, C, Hardacre, C, Jacquemin, J, Elder, RH & Sinclair, DC 2016, 'Development of the Oxide Ion Conductor Na0.5Bi0.5TiO3 (NBT) for Solid Oxide Cells', 229th ECS Meeting , San Diego, United States, 29/05/2016 - 02/06/2016 pp. 1400.

Development of the Oxide Ion Conductor Na0.5Bi0.5TiO3 (NBT) for Solid Oxide Cells. / Tumilson, Christopher; Hardacre, Chris; Jacquemin, Johan; Elder, Rachael H; Sinclair, Derek C.

2016. 1400 Abstract from 229th ECS Meeting , San Diego, United States.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Development of the Oxide Ion Conductor Na0.5Bi0.5TiO3 (NBT) for Solid Oxide Cells

AU - Tumilson, Christopher

AU - Hardacre, Chris

AU - Jacquemin, Johan

AU - Elder, Rachael H

AU - Sinclair, Derek C

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Na0.5Bi0.5TiO3 (NBT) is a well-known lead-free piezoelectric material with potential to replace lead zirconate titanate (PZT),1 however high leakage conductivity for the material has been widely reported.2 Through a combination of Impedance Spectroscopy (IS), O2- ion transference (EMF) number experiments and O18 tracer diffusion measurements, combined with Time-of-flight Secondary Ion Mass Spectrometry (TOFSIMS), it was identified that this leakage conductivity was due to oxygen ion conductivity. The volatilization of bismuth during synthesis, causing oxygen vacancies, is believed to be responsible for the leakage conductivity.3 The oxide-ion conductivity, when doped with magnesium, exceeds that of yttria-stabilized zirconia (YSZ) at ~500 °C,3 making it a potential electrolyte material for Intermediate Temperature Solid Oxide Cells (ITSOCs). Figure 1 shows the comparison of bulk oxide ion conductivity between 2 at.% Mg-doped NBT and other known oxide ion conductors.As part of the UK wide £5.7m 4CU project, research has concentrated on trying to develop NBT for use in Intermediate Temperature Solid Oxide Cells (ITSOCS). With the aim of achieving mixed ionic and electronic conduction, transition metals were chemically doped on to the Ti-site. A range of experimental techniques was used to characterize the materials aimed at investigating both conductivity and material structure (Scanning Electron Microscopy (SEM), IS, X-ray Photoelectron Spectroscopy (XPS) and X-ray Absorption Spectroscopy (XAS)). The potential for NBT as an ITSOC material, as well as the challenges of developing the material, will be discussed.(1) Takenaka T. et al. Jpn. J. Appl. Phys 1999, 30, 2236.(2) Hiruma Y. et al. J. Appl. Phys 2009, 105, 084112.(3) Li. M. et al. Nature Materials 2013, 13, 31.

AB - Na0.5Bi0.5TiO3 (NBT) is a well-known lead-free piezoelectric material with potential to replace lead zirconate titanate (PZT),1 however high leakage conductivity for the material has been widely reported.2 Through a combination of Impedance Spectroscopy (IS), O2- ion transference (EMF) number experiments and O18 tracer diffusion measurements, combined with Time-of-flight Secondary Ion Mass Spectrometry (TOFSIMS), it was identified that this leakage conductivity was due to oxygen ion conductivity. The volatilization of bismuth during synthesis, causing oxygen vacancies, is believed to be responsible for the leakage conductivity.3 The oxide-ion conductivity, when doped with magnesium, exceeds that of yttria-stabilized zirconia (YSZ) at ~500 °C,3 making it a potential electrolyte material for Intermediate Temperature Solid Oxide Cells (ITSOCs). Figure 1 shows the comparison of bulk oxide ion conductivity between 2 at.% Mg-doped NBT and other known oxide ion conductors.As part of the UK wide £5.7m 4CU project, research has concentrated on trying to develop NBT for use in Intermediate Temperature Solid Oxide Cells (ITSOCS). With the aim of achieving mixed ionic and electronic conduction, transition metals were chemically doped on to the Ti-site. A range of experimental techniques was used to characterize the materials aimed at investigating both conductivity and material structure (Scanning Electron Microscopy (SEM), IS, X-ray Photoelectron Spectroscopy (XPS) and X-ray Absorption Spectroscopy (XAS)). The potential for NBT as an ITSOC material, as well as the challenges of developing the material, will be discussed.(1) Takenaka T. et al. Jpn. J. Appl. Phys 1999, 30, 2236.(2) Hiruma Y. et al. J. Appl. Phys 2009, 105, 084112.(3) Li. M. et al. Nature Materials 2013, 13, 31.

M3 - Abstract

SP - 1400

ER -

Tumilson C, Hardacre C, Jacquemin J, Elder RH, Sinclair DC. Development of the Oxide Ion Conductor Na0.5Bi0.5TiO3 (NBT) for Solid Oxide Cells. 2016. Abstract from 229th ECS Meeting , San Diego, United States.