Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs

Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs

We have designed and prepared a novel cathode material for solid oxide fuel cell (SOFC) based on SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3&#8722;&#948;</sub> perovskite. We have partially replaced Sr by Ba in Sr<sub>0.9</sub>Ba<sub>0.1&...

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Main Authors: Sabina Sydyknazar, Vanessa Cascos, Loreto Troncoso, Ana Laura Larralde, María Teresa Fernández-Díaz, José Antonio Alonso
Format: Article
Language:English
Published: MDPI AG 2019-06-01
Series:Materials
Subjects:
IT-SOFC
cathode
perovskite
neutron diffraction
SrCoO<sub>3</sub>
Online Access:https://www.mdpi.com/1996-1944/12/12/1957
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spelling doaj-66aacd2fff3f4fbd9539fb10415441f22020-11-25T02:40:25ZengMDPI AGMaterials1996-19442019-06-011212195710.3390/ma12121957ma12121957Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCsSabina Sydyknazar0Vanessa Cascos1Loreto Troncoso2Ana Laura Larralde3María Teresa Fernández-Díaz4José Antonio Alonso5Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid, SpainInstituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid, SpainInstituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid, SpainINQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaInstitut Laue Langevin, BP 156X, F-38042 Grenoble, FranceInstituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid, SpainWe have designed and prepared a novel cathode material for solid oxide fuel cell (SOFC) based on SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3&#8722;&#948;</sub> perovskite. We have partially replaced Sr by Ba in Sr<sub>0.9</sub>Ba<sub>0.1</sub>Co<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3&#8722;&#948;</sub> (SBCRO) in order to expand the unit-cell size, thereby improving the ionic diffusion of O<sup>2&#8722;</sup> through the crystal lattice. The characterization of this new oxide has been studied at room temperature by X-ray diffraction (XRD) and neutron powder diffraction (NPD) experiments. At room temperature, SBCRO perovskite crystallizes in the P4/mmm tetragonal space group, as observed from NDP data. The maximum conductivity value of 18.6 S cm<sup>&#8722;1</sup> is observed at 850 &#176;C. Polarization resistance measurements on LSGM electrolyte demonstrate an improvement in conductivity with respect to the parent Sr-only perovskite cathode. A good chemical compatibility and an adequate thermal expansion coefficient make this oxide auspicious for using it as a cathode in SOFC.https://www.mdpi.com/1996-1944/12/12/1957IT-SOFCcathodeperovskiteneutron diffractionSrCoO<sub>3</sub>
collection DOAJ
language English
format Article
sources DOAJ
author Sabina Sydyknazar
Vanessa Cascos
Loreto Troncoso
Ana Laura Larralde
María Teresa Fernández-Díaz
José Antonio Alonso
spellingShingle Sabina Sydyknazar
Vanessa Cascos
Loreto Troncoso
Ana Laura Larralde
María Teresa Fernández-Díaz
José Antonio Alonso
Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs
Materials
IT-SOFC
cathode
perovskite
neutron diffraction
SrCoO<sub>3</sub>
author_facet Sabina Sydyknazar
Vanessa Cascos
Loreto Troncoso
Ana Laura Larralde
María Teresa Fernández-Díaz
José Antonio Alonso
author_sort Sabina Sydyknazar
title Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs
title_short Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs
title_full Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs
title_fullStr Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs
title_full_unstemmed Design, Synthesis, Structure and Properties of Ba-Doped Derivatives of SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3−δ</sub> Perovskite as Cathode Materials for SOFCs
title_sort design, synthesis, structure and properties of ba-doped derivatives of srco<sub>0.95</sub>ru<sub>0.05</sub>o<sub>3−δ</sub> perovskite as cathode materials for sofcs
publisher MDPI AG
series Materials
issn 1996-1944
publishDate 2019-06-01
description We have designed and prepared a novel cathode material for solid oxide fuel cell (SOFC) based on SrCo<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3&#8722;&#948;</sub> perovskite. We have partially replaced Sr by Ba in Sr<sub>0.9</sub>Ba<sub>0.1</sub>Co<sub>0.95</sub>Ru<sub>0.05</sub>O<sub>3&#8722;&#948;</sub> (SBCRO) in order to expand the unit-cell size, thereby improving the ionic diffusion of O<sup>2&#8722;</sup> through the crystal lattice. The characterization of this new oxide has been studied at room temperature by X-ray diffraction (XRD) and neutron powder diffraction (NPD) experiments. At room temperature, SBCRO perovskite crystallizes in the P4/mmm tetragonal space group, as observed from NDP data. The maximum conductivity value of 18.6 S cm<sup>&#8722;1</sup> is observed at 850 &#176;C. Polarization resistance measurements on LSGM electrolyte demonstrate an improvement in conductivity with respect to the parent Sr-only perovskite cathode. A good chemical compatibility and an adequate thermal expansion coefficient make this oxide auspicious for using it as a cathode in SOFC.
topic IT-SOFC
cathode
perovskite
neutron diffraction
SrCoO<sub>3</sub>
url https://www.mdpi.com/1996-1944/12/12/1957
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AT joseantonioalonso designsynthesisstructureandpropertiesofbadopedderivativesofsrcosub095subrusub005subosub3dsubperovskiteascathodematerialsforsofcs
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