Oxygen surface exchange kinetics and stability of (La,Sr)2 CoO4±δ/La 1-xSrxMO3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures

doi:https://doi.org/10.1039/C4TA05795C

Title: Oxygen surface exchange kinetics and stability of (La,Sr) ₂ CoO _4±δ/La _1-xSr _xMO _3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures

Abstract

Heterostructured oxide interfaces created by decorating Ruddlesden-Popper phases (A2BO4) or perovskites on perovskites have shown not only pronounced cation segregation at the interface and in the A2BO4 structure but also much enhanced kinetics for oxygen electrocatalysis at elevated temperatures. In this study, we report and compare the time-dependent surface exchange kinetics and stability of (La _0.5Sr _0.5) ₂CoO ₄ -decorated (LSC ₂₁₄) La _0.6Sr _0.4Co _0.2Fe _0.8O _3-δ (LSCF ₁₁₃) and La _0.8Sr _0.2CoO _3-δ (LSC ₁₁₃) thin films. While LSC ₂₁₄ decoration on LSC ₁₁₃greatly reduced the degradation in the surface exchange kinetics as a function of time relative to LSC ₁₁₃, LSCF ₁₁₃ with LSC ₂₁₄ coverage showed comparable surface exchange kinetics and stability to LSCF ₁₁₃. This difference can be explained by greater surface stability of LSCF ₁₁₃ than LSC ₁₁₃ under testing conditions, and that LSC ₂₁₄ decoration on LSC ₁₁₃ reduced the decomposition of LSC ₁₁₃ to form secondary phases that impedes oxygen exchange kinetics, and thus resulted in enhanced stability. This hypothesis is supported by the observations that annealing at 550 °C led to the formation of Sr-rich secondary particles on LSC ₁₁₃ while no such particles were observed on LSCF ₁₁₃. Densitymore »« less

Authors:

Lee, Dongkyu ^[1]; Lee, Yueh-Lin ^[1]; Hong, Wesley T. ^[2]; Biegalski, Michael D. ^[3]; Morgan, Dane ^[4]; Shao-Horn, Yang ^[5]

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Electrochemical Energy Lab. and Dept. of Mechanical Engineering
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Electrochemical Energy Lab. and Dept. of Materials Science and Engineering
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Univ. of Wisconsin, Madison, WI (United States). Dept. of Materials Science and Engineering
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Electrochemical Energy Lab., Dept. of Mechanical Engineering, and Dept. of Materials Science and Engineering

Publication Date:: 2014-11-13

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1185681

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Journal of Materials Chemistry. A

Additional Journal Information:: Journal Volume: 3; Journal Issue: 5; Journal ID: ISSN 2050-7488

Publisher:: Royal Society of Chemistry

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; LSCO fuel cell anode XPS

Citation Formats


                    Lee, Dongkyu, Lee, Yueh-Lin, Hong, Wesley T., Biegalski, Michael D., Morgan, Dane, and Shao-Horn, Yang. Oxygen surface exchange kinetics and stability of (La,Sr)2 CoO4±δ/La 1-xSrxMO3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures.  United States: N. p., 2014. 
        Web.  doi:10.1039/C4TA05795C.

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                    Lee, Dongkyu, Lee, Yueh-Lin, Hong, Wesley T., Biegalski, Michael D., Morgan, Dane, & Shao-Horn, Yang. Oxygen surface exchange kinetics and stability of (La,Sr)2 CoO4±δ/La 1-xSrxMO3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures.  United States.  https://doi.org/10.1039/C4TA05795C

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                    Lee, Dongkyu, Lee, Yueh-Lin, Hong, Wesley T., Biegalski, Michael D., Morgan, Dane, and Shao-Horn, Yang. Thu .  
        "Oxygen surface exchange kinetics and stability of (La,Sr)2 CoO4±δ/La 1-xSrxMO3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures".  United States.  https://doi.org/10.1039/C4TA05795C.  https://www.osti.gov/servlets/purl/1185681.

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@article{osti_1185681,

  title        = {Oxygen surface exchange kinetics and stability of (La,Sr)2 CoO4±δ/La 1-xSrxMO3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures},

  author       = {Lee, Dongkyu and Lee, Yueh-Lin and Hong, Wesley T. and Biegalski, Michael D. and Morgan, Dane and Shao-Horn, Yang},

  abstractNote = {Heterostructured oxide interfaces created by decorating Ruddlesden-Popper phases (A2BO4) or perovskites on perovskites have shown not only pronounced cation segregation at the interface and in the A2BO4 structure but also much enhanced kinetics for oxygen electrocatalysis at elevated temperatures. In this study, we report and compare the time-dependent surface exchange kinetics and stability of (La0.5Sr0.5)2CoO4 -decorated (LSC214) La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF113) and La0.8Sr0.2CoO3-δ (LSC113) thin films. While LSC214 decoration on LSC113 greatly reduced the degradation in the surface exchange kinetics as a function of time relative to LSC113, LSCF113 with LSC214 coverage showed comparable surface exchange kinetics and stability to LSCF113. This difference can be explained by greater surface stability of LSCF113 than LSC113 under testing conditions, and that LSC214 decoration on LSC113 reduced the decomposition of LSC113 to form secondary phases that impedes oxygen exchange kinetics, and thus resulted in enhanced stability. This hypothesis is supported by the observations that annealing at 550 °C led to the formation of Sr-rich secondary particles on LSC113 while no such particles were observed on LSCF113. Density functional theory (DFT) computation provides further support, which revealed greater capacity of surface Sr segregation for LSCF113 having SrO termination than LSC113 having (La0.25Sr0.75)O termination for the experimental conditions, and lower energy gain to move Sr from LSCF113 into LSC214 relative to the LSC214-LSC113 system.},

  doi          = {10.1039/C4TA05795C},

  url          = {https://www.osti.gov/biblio/1185681},
  journal      = {Journal of Materials Chemistry. A},

  issn         = {2050-7488},

  number       = 5,

  volume       = 3,

  place        = {United States},

  year         = {2014},

  month        = {11}

}

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Crumlin, Ethan J.; Mutoro, Eva; Ahn, Sung-Jin
The Journal of Physical Chemistry Letters, Vol. 1, Issue 21
https://doi.org/10.1021/jz101217d

Oxygen nonstoichiometry and thermo-chemical stability of La0.6Sr0.4Co1-yFeyO3-δ (y=0.2, 0.4, 0.6, 0.8)
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https://doi.org/10.1016/j.ssi.2010.09.024

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Vandoorn, R.; Fullarton, I.; Desouza, R.
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https://doi.org/10.1016/S0167-2738(97)00011-8

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Ovenstone, James; White, Jeffery S.; Misture, Scott T.
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https://doi.org/10.1016/j.jpowsour.2008.03.033

Surfaces of reduced and oxidized ${SrTiO}_{3}$ from atomic force microscopy
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Szot, K.; Speier, W.
Physical Review B, Vol. 60, Issue 8
https://doi.org/10.1103/PhysRevB.60.5909

Works referencing / citing this record:

Atomistic Simulation of Interfaces in Materials of Solid State Ionics
journal, January 2018

Ivanov-Schitz, A. K.; Mazo, G. N.
Crystallography Reports, Vol. 63, Issue 1
https://doi.org/10.1134/s106377451801008x

Understanding and Controlling the Work Function of Perovskite Oxides Using Density Functional Theory
journal, May 2016

Jacobs, Ryan; Booske, John; Morgan, Dane
Advanced Functional Materials, Vol. 26, Issue 30
https://doi.org/10.1002/adfm.201600243

Atomistic Simulation of Interfaces in Materials of Solid State Ionics
journal, January 2018

Ivanov-Schitz, A. K.; Mazo, G. N.
Crystallography Reports, Vol. 63, Issue 1
https://doi.org/10.1134/s106377451801008x

Nanostructured Materials and Interfaces for Advanced Ionic Electronic Conducting Oxides
journal, May 2019

Acosta, Matias; Baiutti, Federico; Tarancón, Albert
Advanced Materials Interfaces, Vol. 6, Issue 15
https://doi.org/10.1002/admi.201900462

Surface Tuning of Solid Oxide Fuel Cell Cathode by Atomic Layer Deposition
journal, October 2018

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Advanced Energy Materials, Vol. 8, Issue 33
https://doi.org/10.1002/aenm.201802506

Oxygen Evolution Reaction over the Au/YSZ Interface at High Temperature
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Ab initio GGA+U study of oxygen evolution and oxygen reduction electrocatalysis on the (001) surfaces of lanthanum transition metal perovskites LaBO ₃ (B = Cr, Mn, Fe, Co and Ni)
journal, January 2015

Lee, Yueh-Lin; Gadre, Milind J.; Shao-Horn, Yang
Physical Chemistry Chemical Physics, Vol. 17, Issue 33
https://doi.org/10.1039/c5cp02834e

Controlling cation segregation in perovskite-based electrodes for high electro-catalytic activity and durability
journal, January 2017

Li, Yifeng; Zhang, Wenqiang; Zheng, Yun
Chemical Society Reviews, Vol. 46, Issue 20
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Temporal and thermal evolutions of surface Sr-segregation in pristine and atomic layer deposition modified La _0.6 Sr _0.4 CoO _3−δ epitaxial films
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Applications of cesium in the perovskite solar cells
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Title: Oxygen surface exchange kinetics and stability of (La,Sr) 2 CoO 4±δ/La 1-xSr xMO 3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures

Abstract

Citation Formats

Properties of La0.6Sr0.4Co0.2Fe0.8O3âˆ’Î´ (LSCF) double layer cathodes on gadolinium-doped cerium oxide (CGO) electrolytes I. Role of SiO2 journal, February 1998

Enhanced Oxygen Surface Exchange Kinetics and Stability on Epitaxial La 0.8 Sr 0.2 CoO 3−δ Thin Films by La 0.8 Sr 0.2 MnO 3−δ Decoration journal, June 2014

Relationship between Cation Segregation and the Electrochemical Oxygen Reduction Kinetics of La0.6Sr0.4CoO3−δ Thin Film Electrodes journal, January 2011

Electrochemical Characterization of La[sub 0.6]Sr[sub 0.4]Co[sub 0.2]Fe[sub 0.8]O[sub 3] Cathodes for Intermediate-Temperature SOFCs journal, January 2004

Revealing the atomic structure and strontium distribution in nanometer-thick La0.8Sr0.2CoO3−δ grown on (001)-oriented SrTiO3 journal, January 2014

Preparation of Perovskite-Type La[sub 1−x]Sr[sub x]MnO[sub 3] Films by Vapor-Phase Processes and Their Electrochemical Properties journal, January 1997

Surface strontium enrichment on highly active perovskites for oxygen electrocatalysis in solid oxide fuel cells journal, January 2012

Projector augmented-wave method journal, December 1994

Surface termination and subsurface restructuring of perovskite-based solid oxide electrode materials journal, January 2014

Strontium influence on the oxygen electrocatalysis of La 2−x Sr x NiO 4±δ (0.0 ≤ x Sr ≤ 1.0) thin films journal, January 2014

Oxygen tracer diffusion and surface exchange kinetics in La0.6Sr0.4CoO3−δ journal, June 2010

Oxygen nonstoichiometry of La1−xSrxCoO3−δ (0 < x ≤ 0.6) journal, July 1990

Hetero-Interfaces at Nanoscaled (La,Sr)CoO 3-δ Thin-Film Cathodes Enhancing Oxygen Surface-Exchange Properties journal, January 2013

Surface composition of perovskite-type materials studied by Low Energy Ion Scattering (LEIS) journal, September 2014

Double perovskites as a family of highly active catalysts for oxygen evolution in alkaline solution journal, September 2013

Catalytic Activity Enhancement for Oxygen Reduction on Epitaxial Perovskite Thin Films for Solid-Oxide Fuel Cells journal, June 2010

Composite Cathode of Perovskite-Related Oxides, (La,Sr)CoO[sub 3−δ]∕(La,Sr)[sub 2]CoO[sub 4−δ], for Solid Oxide Fuel Cells journal, January 2009

Valence control, reactivity of oxygen, and catalytic activity of lanthanum strontium cobalt oxide (La2-xSrxCoO4) journal, March 1989

Enhancement of Oxygen Surface Exchange at the Hetero-interface of (La,Sr)CoO[sub 3]/(La,Sr)[sub 2]CoO[sub 4] with PLD-Layered Films journal, January 2008

Determination of Oxygen Vacancy Concentration in a Thin Film of La[sub 0.6]Sr[sub 0.4]CoO[sub 3−δ] by an Electrochemical Method journal, January 2002

High-temperature neutron diffraction study of La 2 − x Sr x CoO 4 : Correlation between structure and transport properties journal, November 2010

The phase stability of La 0.5 Sr 0.5 CoO 3 − δ journal, April 1997

Anomalous Interface and Surface Strontium Segregation in (La 1– y Sr y ) 2 CoO 4±δ /La 1– x Sr x CoO 3−δ Heterostructured Thin Films journal, March 2014

Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal, January 1998

Mechanism and kinetics of oxygen reduction on porous La1−Sr CoO3− electrodes journal, August 1998

Properties of La0.6Sr0.4Co0.2Fe0.8O3−x (LSCF) double layer cathodes on gadolinium-doped cerium oxide (CGO) electrolytes II. Role of oxygen exchange and diffusion journal, February 1998

Oxygen Electrocatalysis on Epitaxial La 0.6 Sr 0.4 CoO 3- δ Perovskite Thin Films for Solid Oxide Fuel Cells journal, January 2012

Chemical Heterogeneities on La 0.6 Sr 0.4 CoO 3−δ Thin Films—Correlations to Cathode Surface Activity and Stability journal, March 2012

Anisotropic oxygen diffusion properties in epitaxial thin films of La 2 NiO 4+δ journal, January 2008

Structure and electrical properties of La1−xSrxCo1−yFeyO3. Part 1. The system La0.8Sr0.2Co1−yFeyO3 journal, March 1995

Ab initiomolecular dynamics for liquid metals journal, January 1993

Mechanism for enhanced oxygen reduction kinetics at the (La,Sr)CoO3−δ/(La,Sr)2CoO4+δ hetero-interface journal, January 2012

Mechanism of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 cathode degradation journal, July 2012

Oxygen transport in La1−xSrxMn1−yCoyO3±δ perovskites journal, November 1999

Oxygen transport in La1−xSrxMn1−yCoyO3±δ perovskites Part I. Oxygen tracer diffusion journal, February 1998

Cathodic reaction mechanism for dense Sr-doped lanthanum manganite electrodes journal, July 1996

Thermodynamic and kinetic considerations on degradations in solid oxide fuel cell cathodes journal, March 2008

In Situ Ambient Pressure X-ray Photoelectron Spectroscopy of Cobalt Perovskite Surfaces under Cathodic Polarization at High Temperatures journal, July 2013

Enhancement of oxygen exchange at the hetero interface of (La,Sr)CoO3/(La,Sr)2CoO4 in composite ceramics journal, February 2008

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Origin of Enhanced Chemical Capacitance in La 0.8 Sr 0.2 CoO 3-δ Thin Film Electrodes journal, January 2013

Reversible Compositional Control of Oxide Surfaces by Electrochemical Potentials journal, December 2011

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Nonstoichiometry of the perovskite-type oxides La1−xSrxCoO3−δ journal, May 1989

Materials for fuel-cell technologies journal, November 2001

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Laser deposition from a nanostructured YBaCuO target: Analysis of the plume and growth kinetics of particles on SrTiO3 journal, August 2001

Oxygen non-stoichiometry and electrical conductivity of the binary strontium cobalt oxide SrCoOx journal, August 1997

In Situ Studies of the Temperature-Dependent Surface Structure and Chemistry of Single-Crystalline (001)-Oriented La 0.8 Sr 0.2 CoO 3−δ Perovskite Thin Films journal, April 2013

Surface exchange of oxygen in mixed conducting perovskite oxides journal, July 1996

Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal, October 1996

Cation interdiffusion model for enhanced oxygen kinetics at oxide heterostructure interfaces journal, January 2012

Strain Influence on the Oxygen Electrocatalysis of the (100)-Oriented Epitaxial La 2 NiO 4+δ Thin Films at Elevated Temperatures journal, September 2013

A Novel Composite Cathode for Low-Temperature SOFCs Based on Oxide Proton Conductors journal, September 2008

Suppression of Sr surface segregation in La 1−x Sr x Co 1−y Fe y O 3−δ : a first principles study journal, January 2013

The phase diagram and crystal chemistry of strontium-doped rare earth cobaltates: Ln2−xSrxCoO4+δ (Ln=La–Dy) journal, August 2006

Influence of the synthesis method on the porosity, microstructure and electrical properties of La0.7Sr0.3MnO3 cathode materials journal, December 2009

Factors Governing Oxygen Reduction in Solid Oxide Fuel Cell Cathodes † journal, October 2004

Electronic Activation of Cathode Superlattices at Elevated Temperatures - Source of Markedly Accelerated Oxygen Reduction Kinetics journal, May 2013

A high-performance cathode for the next generation of solid-oxide fuel cells journal, September 2004

Accurate and simple analytic representation of the electron-gas correlation energy journal, June 1992

Structure and electrical properties of La1 − xSrxCo1 − yFeyO3. Part 2. The system La1 − xSrxCo0.2Fe0.8O3 journal, March 1995

Impedance spectroscopic study on well-defined (La,Sr)(Co,Fe)O3−δ model electrodes journal, April 2006

Combinatorial solution synthesis and characterization of complex oxide catalyst powders based on the LaMO3 system journal, May 2003

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Oxygen nonstoichiometry and thermo-chemical stability of La0.6Sr0.4Co1-yFeyO3-δ (y=0.2, 0.4, 0.6, 0.8) journal, December 2010

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Phase transitions and phase decomposition of La1−xSrxCoO3−δ in low oxygen partial pressures journal, June 2008

Surfaces of reduced and oxidized SrTiO 3 from atomic force microscopy journal, August 1999

Atomistic Simulation of Interfaces in Materials of Solid State Ionics journal, January 2018

Understanding and Controlling the Work Function of Perovskite Oxides Using Density Functional Theory journal, May 2016

Atomistic Simulation of Interfaces in Materials of Solid State Ionics journal, January 2018

Nanostructured Materials and Interfaces for Advanced Ionic Electronic Conducting Oxides journal, May 2019

Title: Oxygen surface exchange kinetics and stability of (La,Sr) ₂ CoO _4±δ/La _1-xSr _xMO _3-δ (M = Co and Fe) hetero-interfaces at intermediate temperatures

Properties of La0.6Sr0.4Co0.2Fe0.8O3âˆ’Î´ (LSCF) double layer cathodes on gadolinium-doped cerium oxide (CGO) electrolytes I. Role of SiO2
journal, February 1998

Enhanced Oxygen Surface Exchange Kinetics and Stability on Epitaxial La _0.8 Sr _0.2 CoO _3−δ Thin Films by La _0.8 Sr _0.2 MnO _3−δ Decoration
journal, June 2014

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journal, January 2011

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journal, January 2004

Revealing the atomic structure and strontium distribution in nanometer-thick La0.8Sr0.2CoO3−δ grown on (001)-oriented SrTiO3
journal, January 2014

Preparation of Perovskite-Type La[sub 1−x]Sr[sub x]MnO[sub 3] Films by Vapor-Phase Processes and Their Electrochemical Properties
journal, January 1997

Surface strontium enrichment on highly active perovskites for oxygen electrocatalysis in solid oxide fuel cells
journal, January 2012

Projector augmented-wave method
journal, December 1994

Surface termination and subsurface restructuring of perovskite-based solid oxide electrode materials
journal, January 2014

Strontium influence on the oxygen electrocatalysis of La _2−x Sr _x NiO _4±δ (0.0 ≤ x _Sr ≤ 1.0) thin films
journal, January 2014

Oxygen tracer diffusion and surface exchange kinetics in La0.6Sr0.4CoO3−δ
journal, June 2010

Oxygen nonstoichiometry of La_1−xSr_xCoO_3−δ (0 < x ≤ 0.6)
journal, July 1990

Hetero-Interfaces at Nanoscaled (La,Sr)CoO _3-δ Thin-Film Cathodes Enhancing Oxygen Surface-Exchange Properties
journal, January 2013

Surface composition of perovskite-type materials studied by Low Energy Ion Scattering (LEIS)
journal, September 2014

Double perovskites as a family of highly active catalysts for oxygen evolution in alkaline solution
journal, September 2013

Catalytic Activity Enhancement for Oxygen Reduction on Epitaxial Perovskite Thin Films for Solid-Oxide Fuel Cells
journal, June 2010

Composite Cathode of Perovskite-Related Oxides, (La,Sr)CoO[sub 3−δ]∕(La,Sr)[sub 2]CoO[sub 4−δ], for Solid Oxide Fuel Cells
journal, January 2009

Valence control, reactivity of oxygen, and catalytic activity of lanthanum strontium cobalt oxide (La2-xSrxCoO4)
journal, March 1989

Enhancement of Oxygen Surface Exchange at the Hetero-interface of (La,Sr)CoO[sub 3]/(La,Sr)[sub 2]CoO[sub 4] with PLD-Layered Films
journal, January 2008

Determination of Oxygen Vacancy Concentration in a Thin Film of La[sub 0.6]Sr[sub 0.4]CoO[sub 3−δ] by an Electrochemical Method
journal, January 2002

High-temperature neutron diffraction study of ${La}_{2 - x} {Sr}_{x} {CoO}_{4}$ : Correlation between structure and transport properties
journal, November 2010

The phase stability of La 0.5 Sr 0.5 CoO 3 − δ
journal, April 1997

Anomalous Interface and Surface Strontium Segregation in (La _{1– y} Sr _y ) ₂ CoO _4±δ /La _{1– x} Sr _x CoO _3−δ Heterostructured Thin Films
journal, March 2014

Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study
journal, January 1998

Mechanism and kinetics of oxygen reduction on porous La1−Sr CoO3− electrodes
journal, August 1998

Properties of La0.6Sr0.4Co0.2Fe0.8O3−x (LSCF) double layer cathodes on gadolinium-doped cerium oxide (CGO) electrolytes II. Role of oxygen exchange and diffusion
journal, February 1998

Oxygen Electrocatalysis on Epitaxial La _0.6 Sr _0.4 CoO _3- _δ Perovskite Thin Films for Solid Oxide Fuel Cells
journal, January 2012

Chemical Heterogeneities on La _0.6 Sr _0.4 CoO _3−δ Thin Films—Correlations to Cathode Surface Activity and Stability
journal, March 2012

Anisotropic oxygen diffusion properties in epitaxial thin films of La ₂ NiO _4+δ
journal, January 2008

Structure and electrical properties of La1−xSrxCo1−yFeyO3. Part 1. The system La0.8Sr0.2Co1−yFeyO3
journal, March 1995

Ab initiomolecular dynamics for liquid metals
journal, January 1993

Mechanism for enhanced oxygen reduction kinetics at the (La,Sr)CoO3−δ/(La,Sr)2CoO4+δ hetero-interface
journal, January 2012

Mechanism of La _0.6 Sr _0.4 Co _0.2 Fe _0.8 O ₃ cathode degradation
journal, July 2012

Oxygen transport in La1−xSrxMn1−yCoyO3±δ perovskites
journal, November 1999

Oxygen transport in La1−xSrxMn1−yCoyO3±δ perovskites Part I. Oxygen tracer diffusion
journal, February 1998

Cathodic reaction mechanism for dense Sr-doped lanthanum manganite electrodes
journal, July 1996

Thermodynamic and kinetic considerations on degradations in solid oxide fuel cell cathodes
journal, March 2008

In Situ Ambient Pressure X-ray Photoelectron Spectroscopy of Cobalt Perovskite Surfaces under Cathodic Polarization at High Temperatures
journal, July 2013

Enhancement of oxygen exchange at the hetero interface of (La,Sr)CoO3/(La,Sr)2CoO4 in composite ceramics
journal, February 2008

La2Zr2O7 formation and oxygen reduction kinetics of the La0.85Sr0.15MnyO3, O2(g)|YSZ system
journal, September 1998

Origin of Enhanced Chemical Capacitance in La _0.8 Sr _0.2 CoO _3-δ Thin Film Electrodes
journal, January 2013

Reversible Compositional Control of Oxide Surfaces by Electrochemical Potentials
journal, December 2011

The n=3 member of the SrCoO(3n−1)/n series of layered oxygen-defect perovskites
journal, September 2011

Nonstoichiometry of the perovskite-type oxides La1−xSrxCoO3−δ
journal, May 1989

Materials for fuel-cell technologies
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Structural aspects of the ionic conductivity of La1âxSrxCoO3âÎ´
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Laser deposition from a nanostructured YBaCuO target: Analysis of the plume and growth kinetics of particles on SrTiO3
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Oxygen non-stoichiometry and electrical conductivity of the binary strontium cobalt oxide SrCoOx
journal, August 1997

In Situ Studies of the Temperature-Dependent Surface Structure and Chemistry of Single-Crystalline (001)-Oriented La _0.8 Sr _0.2 CoO _3−δ Perovskite Thin Films
journal, April 2013

Surface exchange of oxygen in mixed conducting perovskite oxides
journal, July 1996

Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996

Cation interdiffusion model for enhanced oxygen kinetics at oxide heterostructure interfaces
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Strain Influence on the Oxygen Electrocatalysis of the (100)-Oriented Epitaxial La ₂ NiO _4+δ Thin Films at Elevated Temperatures
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journal, January 2013

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journal, August 2006

Influence of the synthesis method on the porosity, microstructure and electrical properties of La0.7Sr0.3MnO3 cathode materials
journal, December 2009

Factors Governing Oxygen Reduction in Solid Oxide Fuel Cell Cathodes ^†
journal, October 2004

Electronic Activation of Cathode Superlattices at Elevated Temperatures - Source of Markedly Accelerated Oxygen Reduction Kinetics
journal, May 2013

A high-performance cathode for the next generation of solid-oxide fuel cells
journal, September 2004

Accurate and simple analytic representation of the electron-gas correlation energy
journal, June 1992

Structure and electrical properties of La1 − xSrxCo1 − yFeyO3. Part 2. The system La1 − xSrxCo0.2Fe0.8O3
journal, March 1995

Impedance spectroscopic study on well-defined (La,Sr)(Co,Fe)O3−δ model electrodes
journal, April 2006

Combinatorial solution synthesis and characterization of complex oxide catalyst powders based on the LaMO3 system
journal, May 2003

Cation Size Mismatch and Charge Interactions Drive Dopant Segregation at the Surfaces of Manganite Perovskites
journal, May 2013

Prediction of solid oxide fuel cell cathode activity with first-principles descriptors
journal, January 2011

Measurement of the surface exchange and diffusion coefficients of thin film LaCoO3 and SrCoOx
journal, October 2012

Ab initio energetics of $La B O_{3} (001)$ ( $B = Mn$ , Fe, Co, and Ni) for solid oxide fuel cell cathodes
journal, December 2009

Oxygen Reduction Kinetics Enhancement on a Heterostructured Oxide Surface for Solid Oxide Fuel Cells
journal, October 2010

Oxygen nonstoichiometry and thermo-chemical stability of La0.6Sr0.4Co1-yFeyO3-δ (y=0.2, 0.4, 0.6, 0.8)
journal, December 2010

Surface oxygen exchange of LaSrCoO
journal, March 1997

Phase transitions and phase decomposition of La1−xSrxCoO3−δ in low oxygen partial pressures
journal, June 2008

Surfaces of reduced and oxidized ${SrTiO}_{3}$ from atomic force microscopy
journal, August 1999

Atomistic Simulation of Interfaces in Materials of Solid State Ionics
journal, January 2018

Understanding and Controlling the Work Function of Perovskite Oxides Using Density Functional Theory
journal, May 2016

Atomistic Simulation of Interfaces in Materials of Solid State Ionics
journal, January 2018

Nanostructured Materials and Interfaces for Advanced Ionic Electronic Conducting Oxides
journal, May 2019

Surface Tuning of Solid Oxide Fuel Cell Cathode by Atomic Layer Deposition
journal, October 2018

Oxygen Evolution Reaction over the Au/YSZ Interface at High Temperature
journal, March 2019