Improved chemical and electrochemical stability of perovskite oxides with less reducible cations at the surface
Abstract
Segregation and phase separation of aliovalent dopants on perovskite oxide (ABO 3 ) surfaces are detrimental to the performance of energy conversion systems such as solid oxide fuel/electrolysis cells and catalysts for thermochemical H 2 O and CO 2 splitting. One key reason behind the instability of perovskite oxide surfaces is the electrostatic attraction of the negatively charged A-site dopants (for example, Sr La ') by the positively charged oxygen vacancies (V $$••\atop{o}$$) enriched at the surface. Here we show that reducing the surface V $$••\atop{o}$$ concentration improves the oxygen surface exchange kinetics and stability significantly, albeit contrary to the well-established understanding that surface oxygen vacancies facilitate reactions with O 2 molecules. We take La 0.8 Sr 0.2 CoO 3 (LSC) as a model perovskite oxide, and modify its surface with additive cations that are more and less reducible than Co on the B-site of LSC. By using ambient-pressure X-ray absorption and photoelectron spectroscopy, we proved that the dominant role of the less reducible cations is to suppress the enrichment and phase separation of Sr while reducing the concentration of V $$••\atop{o}$$ and making the LSC more oxidized at its surface. Consequently, we found that these less reducible cations significantly improve stability, with up to 30 times faster oxygen exchange kinetics after 54 h in air at 530 °C achieved by Hf addition onto LSC. Finally, the results revealed a 'volcano' relation between the oxygen exchange kinetics and the oxygen vacancy formation enthalpy of the binary oxides of the additive cations. This volcano relation highlights the existence of an optimum surface oxygen vacancy concentration that balances the gain in oxygen exchange kinetics and the chemical stability loss.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Lab. for Electrochemical Interfaces and Dept. of Nuclear Science and Engineering
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Lab. for Electrochemical Interfaces and Dept. of Materials Science and Engineering
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Lab. for Electrochemical Interface, Dept. of Nuclear Science and Engineering, and Dept. of Materials Science and Engineering
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1377444
- Grant/Contract Number:
- AC02-05CH11231; DMR-1419807
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Materials
- Additional Journal Information:
- Journal Volume: 15; Journal Issue: 9; Journal ID: ISSN 1476-1122
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; fuel cells; structural properties
Citation Formats
Tsvetkov, Nikolai, Lu, Qiyang, Sun, Lixin, Crumlin, Ethan J., and Yildiz, Bilge. Improved chemical and electrochemical stability of perovskite oxides with less reducible cations at the surface. United States: N. p., 2016.
Web. doi:10.1038/nmat4659.
Tsvetkov, Nikolai, Lu, Qiyang, Sun, Lixin, Crumlin, Ethan J., & Yildiz, Bilge. Improved chemical and electrochemical stability of perovskite oxides with less reducible cations at the surface. United States. https://doi.org/10.1038/nmat4659
Tsvetkov, Nikolai, Lu, Qiyang, Sun, Lixin, Crumlin, Ethan J., and Yildiz, Bilge. Mon .
"Improved chemical and electrochemical stability of perovskite oxides with less reducible cations at the surface". United States. https://doi.org/10.1038/nmat4659. https://www.osti.gov/servlets/purl/1377444.
@article{osti_1377444,
title = {Improved chemical and electrochemical stability of perovskite oxides with less reducible cations at the surface},
author = {Tsvetkov, Nikolai and Lu, Qiyang and Sun, Lixin and Crumlin, Ethan J. and Yildiz, Bilge},
abstractNote = {Segregation and phase separation of aliovalent dopants on perovskite oxide (ABO 3 ) surfaces are detrimental to the performance of energy conversion systems such as solid oxide fuel/electrolysis cells and catalysts for thermochemical H 2 O and CO 2 splitting. One key reason behind the instability of perovskite oxide surfaces is the electrostatic attraction of the negatively charged A-site dopants (for example, Sr La ') by the positively charged oxygen vacancies (V $••\atop{o}$) enriched at the surface. Here we show that reducing the surface V $••\atop{o}$ concentration improves the oxygen surface exchange kinetics and stability significantly, albeit contrary to the well-established understanding that surface oxygen vacancies facilitate reactions with O 2 molecules. We take La 0.8 Sr 0.2 CoO 3 (LSC) as a model perovskite oxide, and modify its surface with additive cations that are more and less reducible than Co on the B-site of LSC. By using ambient-pressure X-ray absorption and photoelectron spectroscopy, we proved that the dominant role of the less reducible cations is to suppress the enrichment and phase separation of Sr while reducing the concentration of V $••\atop{o}$ and making the LSC more oxidized at its surface. Consequently, we found that these less reducible cations significantly improve stability, with up to 30 times faster oxygen exchange kinetics after 54 h in air at 530 °C achieved by Hf addition onto LSC. Finally, the results revealed a 'volcano' relation between the oxygen exchange kinetics and the oxygen vacancy formation enthalpy of the binary oxides of the additive cations. This volcano relation highlights the existence of an optimum surface oxygen vacancy concentration that balances the gain in oxygen exchange kinetics and the chemical stability loss.},
doi = {10.1038/nmat4659},
journal = {Nature Materials},
number = 9,
volume = 15,
place = {United States},
year = {Mon Jun 13 00:00:00 EDT 2016},
month = {Mon Jun 13 00:00:00 EDT 2016}
}
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Works referenced in this record:
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
- Lee, Dongkyu; Lee, Yueh-Lin; Grimaud, Alexis
- The Journal of Physical Chemistry C, Vol. 118, Issue 26
ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT
journal, June 2005
- Ravel, B.; Newville, M.
- Journal of Synchrotron Radiation, Vol. 12, Issue 4
Relationship between Cation Segregation and the Electrochemical Oxygen Reduction Kinetics of La0.6Sr0.4CoO3−δ Thin Film Electrodes
journal, January 2011
- Kubicek, Markus; Limbeck, Andreas; Frömling, Till
- Journal of The Electrochemical Society, Vol. 158, Issue 6
Electrochemical performance and degradation of (La0.6Sr0.4)0.99CoO3−δ as porous SOFC-cathode
journal, September 2008
- Hjalmarsson, Per; Søgaard, Martin; Mogensen, Mogens
- Solid State Ionics, Vol. 179, Issue 27-32
Surface strontium enrichment on highly active perovskites for oxygen electrocatalysis in solid oxide fuel cells
journal, January 2012
- Crumlin, Ethan J.; Mutoro, Eva; Liu, Zhi
- Energy & Environmental Science, Vol. 5, Issue 3
Combined theoretical and experimental analysis of processes determining cathode performance in solid oxide fuel cells
journal, January 2013
- Kuklja, M. M.; Kotomin, E. A.; Merkle, R.
- Physical Chemistry Chemical Physics, Vol. 15, Issue 15
Surface termination and subsurface restructuring of perovskite-based solid oxide electrode materials
journal, January 2014
- Druce, J.; Téllez, H.; Burriel, M.
- Energy Environ. Sci., Vol. 7, Issue 11
Oxygen Vacancies as Active Sites for Water Dissociation on Rutile
journal, December 2001
- Schaub, R.; Thostrup, P.; Lopez, N.
- Physical Review Letters, Vol. 87, Issue 26
Difference in spin state and covalence between La1−Sr CoO3 and La2−Sr Li0.5Co0.5O4
journal, September 2002
- Hu, Z.; Grazioli, C.; Knupfer, M.
- Journal of Alloys and Compounds, Vol. 343, Issue 1-2
Hetero-Interfaces at Nanoscaled (La,Sr)CoO 3-δ Thin-Film Cathodes Enhancing Oxygen Surface-Exchange Properties
journal, January 2013
- Hayd, Jan; Yokokawa, Harumi; Ivers-Tiffée, Ellen
- Journal of The Electrochemical Society, Vol. 160, Issue 4
Impact of Sr segregation on the electronic structure and oxygen reduction activity of SrTi1−xFexO3 surfaces
journal, January 2012
- Chen, Yan; Jung, WooChul; Cai, Zhuhua
- Energy & Environmental Science, Vol. 5, Issue 7
Surface segregation and restructuring of colossal-magnetoresistant manganese perovskites
journal, December 2000
- Dulli, Hani; Dowben, P. A.; Liou, S. -H.
- Physical Review B, Vol. 62, Issue 22
Oxygen vacancies in transition metal and rare earth oxides: Current state of understanding and remaining challenges
journal, June 2007
- Ganduglia-Pirovano, M. Verónica; Hofmann, Alexander; Sauer, Joachim
- Surface Science Reports, Vol. 62, Issue 6
Recent advances in semiconductors for photocatalytic and photoelectrochemical water splitting
journal, January 2014
- Hisatomi, Takashi; Kubota, Jun; Domen, Kazunari
- Chem. Soc. Rev., Vol. 43, Issue 22
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data
journal, October 2011
- Momma, Koichi; Izumi, Fujio
- Journal of Applied Crystallography, Vol. 44, Issue 6
Fast vacancy-mediated oxygen ion incorporation across the ceria–gas electrochemical interface
journal, July 2014
- Feng, Zhuoluo A.; El Gabaly, Farid; Ye, Xiaofei
- Nature Communications, Vol. 5, Issue 1
Design of conduction band structure of TiO 2 electrode using Nb doping for highly efficient dye-sensitized solar cells : Nb doping for highly efficient dye-sensitized solar cells
journal, June 2012
- Tsvetkov, Nikolay A.; Larina, Liudmila L.; Shevaleevskiy, Oleg
- Progress in Photovoltaics: Research and Applications, Vol. 20, Issue 7
Chemical Heterogeneities on La 0.6 Sr 0.4 CoO 3−δ Thin Films—Correlations to Cathode Surface Activity and Stability
journal, March 2012
- Cai, Zhuhua; Kubicek, Markus; Fleig, Jürgen
- Chemistry of Materials, Vol. 24, Issue 6
First-principles study of native point defects in hafnia and zirconia
journal, March 2007
- Zheng, J. X.; Ceder, G.; Maxisch, T.
- Physical Review B, Vol. 75, Issue 10
Ambient pressure photoelectron spectroscopy: A new tool for surface science and nanotechnology
journal, April 2008
- Salmeron, M.; Schlogl, R.
- Surface Science Reports, Vol. 63, Issue 4
Development of La0.6Sr0.4Co0.2Fe0.8O3−δ cathode with an improved stability via La0.8Sr0.2MnO3-film impregnation
journal, May 2013
- Zhu, Xingbao; Ding, Dong; Li, Yiqian
- International Journal of Hydrogen Energy, Vol. 38, Issue 13
Hybrid functional studies of the oxygen vacancy in
journal, February 2010
- Janotti, A.; Varley, J. B.; Rinke, P.
- Physical Review B, Vol. 81, Issue 8
Imprint and oxygen deficiency in (Pb,La)(Zr,Ti)O 3 thin‐film capacitors with La‐Sr‐Co‐O electrodes
journal, March 1995
- Lee, J.; Ramesh, R.; Keramidas, V. G.
- Applied Physics Letters, Vol. 66, Issue 11
The surface science of titanium dioxide
journal, January 2003
- Diebold, Ulrike
- Surface Science Reports, Vol. 48, Issue 5-8
Generalised equivalent circuits for mass and charge transport: chemical capacitance and its implications
journal, January 2001
- Jamnik, J.; Maier, J.
- Physical Chemistry Chemical Physics, Vol. 3, Issue 9
Role of nanostructures on SOFC performance at reduced temperatures
journal, September 2014
- Lee, Kang Taek; Wachsman, Eric D.
- MRS Bulletin, Vol. 39, Issue 9
Hole-state density of across the insulator/metal phase boundary
journal, February 2000
- Moodenbaugh, A.; Nielsen, B.; Sambasivan, Sharadha
- Physical Review B, Vol. 61, Issue 8, p. 5666-5671
Direct visualization of defect-mediated dissociation of water on TiO2(110)
journal, February 2006
- Bikondoa, Oier; Pang, Chi L.; Ithnin, Roslinda
- Nature Materials, Vol. 5, Issue 3
Comparison of the electronic structure of anatase and rutile single-crystal surfaces using resonant photoemission and x-ray absorption spectroscopy
journal, January 2007
- Thomas, A. G.; Flavell, W. R.; Mallick, A. K.
- Physical Review B, Vol. 75, Issue 3
Structural and magnetic properties of Co-doped (La,Sr)TiO 3 epitaxial thin films probed using x-ray magnetic circular dichroism
journal, September 2009
- Copie, O.; Rode, K.; Mattana, R.
- Journal of Physics: Condensed Matter, Vol. 21, Issue 40
Relating surface chemistry and oxygen surface exchange in LnBaCo 2 O 5+δ air electrodes
journal, January 2015
- Téllez, Helena; Druce, John; Kilner, John A.
- Faraday Discussions, Vol. 182
Perovskite La 0.6 Sr 0.4 Cr 1−x Co x O 3−δ solid solutions for solar-thermochemical fuel production: strategies to lower the operation temperature
journal, January 2015
- Bork, A. H.; Kubicek, M.; Struzik, M.
- Journal of Materials Chemistry A, Vol. 3, Issue 30
Nonstoichiometry of the perovskite-type oxides La1−xSrxCoO3−δ
journal, May 1989
- Mizusaki, Junichiro; Mima, Yasuo; Yamauchi, Shigeru
- Journal of Solid State Chemistry, Vol. 80, Issue 1
In situ growth of nanoparticles through control of non-stoichiometry
journal, October 2013
- Neagu, Dragos; Tsekouras, George; Miller, David N.
- Nature Chemistry, Vol. 5, Issue 11
High temperature degradation of Ba0.5Sr0.5Co0.8Fe0.2O3−δ membranes in atmospheres containing concentrated carbon dioxide
journal, August 2011
- Yi, Jianxin; Schroeder, Michael
- Journal of Membrane Science, Vol. 378, Issue 1-2
Influence of a TiCl 4 Post-Treatment on Nanocrystalline TiO 2 Films in Dye-Sensitized Solar Cells
journal, October 2006
- Sommeling, P. M.; O'Regan, B. C.; Haswell, R. R.
- The Journal of Physical Chemistry B, Vol. 110, Issue 39
Factors Governing Oxygen Reduction in Solid Oxide Fuel Cell Cathodes †
journal, October 2004
- Adler, Stuart B.
- Chemical Reviews, Vol. 104, Issue 10
Redox activity of surface oxygen anions in oxygen-deficient perovskite oxides during electrochemical reactions
journal, January 2015
- Mueller, David N.; Machala, Michael L.; Bluhm, Hendrik
- Nature Communications, Vol. 6, Issue 1
Stabilizing Nanostructured Solid Oxide Fuel Cell Cathode with Atomic Layer Deposition
journal, August 2013
- Gong, Yunhui; Palacio, Diego; Song, Xueyan
- Nano Letters, Vol. 13, Issue 9
A high-performance cathode for the next generation of solid-oxide fuel cells
journal, September 2004
- Shao, Zongping; Haile, Sossina M.
- Nature, Vol. 431, Issue 7005, p. 170-173
Polaronic satellites in x-ray-absorption spectra
journal, June 1990
- van der Laan, G.
- Physical Review B, Vol. 41, Issue 17
Impedance spectroscopic study on well-defined (La,Sr)(Co,Fe)O3−δ model electrodes
journal, April 2006
- Baumann, F.; Fleig, J.; Habermeier, H.
- Solid State Ionics, Vol. 177, Issue 11-12
Cation Size Mismatch and Charge Interactions Drive Dopant Segregation at the Surfaces of Manganite Perovskites
journal, May 2013
- Lee, Wonyoung; Han, Jeong Woo; Chen, Yan
- Journal of the American Chemical Society, Vol. 135, Issue 21
Segregated Chemistry and Structure on (001) and (100) Surfaces of (La 1– x Sr x ) 2 CoO 4 Override the Crystal Anisotropy in Oxygen Exchange Kinetics
journal, July 2015
- Chen, Yan; Téllez, Helena; Burriel, Mónica
- Chemistry of Materials, Vol. 27, Issue 15
Photoemission and x-ray-absorption study of misfit-layered (Bi,Pb)-Sr-Co-O compounds: Electronic structure of a hole-doped Co-O triangular lattice
journal, August 2001
- Mizokawa, T.; Tjeng, L. H.; Steeneken, P. G.
- Physical Review B, Vol. 64, Issue 11
New ambient pressure photoemission endstation at Advanced Light Source beamline 9.3.2
journal, May 2010
- Grass, Michael E.; Karlsson, Patrik G.; Aksoy, Funda
- Review of Scientific Instruments, Vol. 81, Issue 5
Electronic structure of cubic : Ferroelectric stability and detailed comparison with
journal, January 1997
- Fabricius, G.; Peltzer y. Blanca, E. L.; Rodriguez, C. O.
- Physical Review B, Vol. 55, Issue 1
Electronic structure and spin-state transition of
journal, June 1993
- Abbate, M.; Fuggle, J. C.; Fujimori, A.
- Physical Review B, Vol. 47, Issue 24
First Principles Analysis of the Stability and Diffusion of Oxygen Vacancies in Metal Oxides
journal, November 2004
- Carrasco, J.; Lopez, N.; Illas, F.
- Physical Review Letters, Vol. 93, Issue 22
Gravimetric studies of the defect structure of α-Nb2O5
journal, December 1961
- Kofstad, Per; Anderson, Per Bjørn
- Journal of Physics and Chemistry of Solids, Vol. 21, Issue 3-4
Oxygen transport in selected nonstoichiometric perovskite-structure oxides
journal, July 1992
- Carter, S.
- Solid State Ionics, Vol. 53-56
Lead palladium titanate: A room temperature nanoscale multiferroic thin film
journal, February 2020
- Mishra, K. K.; Instan, Alvaro A.; Kumari, Shalini
- Scientific Reports, Vol. 10, Issue 1
A High-Performance Cathode for the Next Generation of Solid-Oxide Fuel Cells.
journal, November 2004
- Shao, Zongping; Haile, Sossina M.
- ChemInform, Vol. 35, Issue 47
Oxygen Vacancies as Active Sites for Water Dissociation on Rutile TiO2(110)
text, January 2001
- Lopez, N.; Lægsgaard, E.; Schaub, R.
- The American Physical Society
Works referencing / citing this record:
Electrochemically Triggered Metal-Insulator Transition between VO 2 and V 2 O 5
journal, June 2018
- Lu, Qiyang; Bishop, Sean R.; Lee, Dongkyu
- Advanced Functional Materials, Vol. 28, Issue 34
Recent Progress on Advanced Materials for Solid-Oxide Fuel Cells Operating Below 500 °C
journal, June 2017
- Zhang, Yuan; Knibbe, Ruth; Sunarso, Jaka
- Advanced Materials, Vol. 29, Issue 48
Defect Engineering of Chalcogen-Tailored Oxygen Electrocatalysts for Rechargeable Quasi-Solid-State Zinc-Air Batteries
journal, July 2017
- Fu, Jing; Hassan, Fathy M.; Zhong, Cheng
- Advanced Materials, Vol. 29, Issue 35
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
In Situ Optical Absorption Studies of Point Defect Kinetics and Thermodynamics in Oxide Thin Films
journal, June 2019
- Buckner, Haley B.; Perry, Nicola H.
- Advanced Materials Interfaces, Vol. 6, Issue 15
Fe/Co Double Hydroxide/Oxide Nanoparticles on N-Doped CNTs as Highly Efficient Electrocatalyst for Rechargeable Liquid and Quasi-Solid-State Zinc-Air Batteries
journal, September 2018
- Wu, Mingjie; Wei, Qiliang; Zhang, Gaixia
- Advanced Energy Materials, Vol. 8, Issue 30
Segregation Induced Self-Assembly of Highly Active Perovskite for Rapid Oxygen Reduction Reaction
journal, September 2018
- Li, Yifeng; Zhang, Wenqiang; Wu, Tong
- Advanced Energy Materials, Vol. 8, Issue 29
Surface Tuning of Solid Oxide Fuel Cell Cathode by Atomic Layer Deposition
journal, October 2018
- Choi, Hyung Jong; Bae, Kiho; Grieshammer, Steffen
- Advanced Energy Materials, Vol. 8, Issue 33
Atomic‐Scale Insights into Surface Lattice Oxygen Activation at the Spinel/Perovskite interface of Co 3 O 4 /La 0.3 Sr 0.7 CoO 3
journal, July 2019
- Wang, Xiyang; Pan, Ziye; Chu, Xuefeng
- Angewandte Chemie, Vol. 131, Issue 34
Atomic-Scale Insights into Surface Lattice Oxygen Activation at the Spinel/Perovskite interface of Co 3 O 4 /La 0.3 Sr 0.7 CoO 3
journal, July 2019
- Wang, Xiyang; Pan, Ziye; Chu, Xuefeng
- Angewandte Chemie International Edition, Vol. 58, Issue 34
Promotion of Oxygen Reduction with Both Amorphous and Crystalline MnO x through the Surface Engineering of La 0.8 Sr 0.2 MnO 3- δ Perovskite
journal, February 2018
- Yu, Jing; Chen, Dengjie; Saccoccio, Mattia
- ChemElectroChem, Vol. 5, Issue 7
All-Inorganic Halide Perovskites for Optoelectronics: Progress and Prospects
journal, August 2017
- Liang, Jia; Liu, Jie; Jin, Zhong
- Solar RRL, Vol. 1, Issue 10
Speciation and Electronic Structure of La1−xSrxCoO3−δ During Oxygen Electrolysis
journal, October 2018
- Stoerzinger, Kelsey A.; Renshaw Wang, Xiao; Hwang, Jonathan
- Topics in Catalysis, Vol. 61, Issue 20
Nanoengineering of solid oxide electrochemical cell technologies: An outlook
journal, March 2019
- Carneiro, Juliana; Nikolla, Eranda
- Nano Research, Vol. 12, Issue 9
Atomic Layer Deposition for Surface Engineering of Solid Oxide Fuel Cell Electrodes
journal, March 2019
- Shim, Joon Hyung; Han, Gwon Deok; Choi, Hyung Jong
- International Journal of Precision Engineering and Manufacturing-Green Technology, Vol. 6, Issue 3
Real-time impedance monitoring of oxygen reduction during surface modification of thin film cathodes
journal, March 2017
- Rupp, Ghislain M.; Opitz, Alexander K.; Nenning, Andreas
- Nature Materials, Vol. 16, Issue 6
Influence of surface atomic structure demonstrated on oxygen incorporation mechanism at a model perovskite oxide
journal, September 2018
- Riva, Michele; Kubicek, Markus; Hao, Xianfeng
- Nature Communications, Vol. 9, Issue 1
Constructing a pathway for mixed ion and electron transfer reactions for O2 incorporation in Pr0.1Ce0.9O2−x
journal, January 2020
- Chen, Di; Guan, Zixuan; Zhang, Dawei
- Nature Catalysis, Vol. 3, Issue 2
In situ encapsulation of iron(0) for solar thermochemical syngas production over iron-based perovskite material
journal, September 2018
- Huang, Chuande; Wu, Jian; Chen, You-Tao
- Communications Chemistry, Vol. 1, Issue 1
Suppressing cation segregation on lanthanum-based perovskite oxides to enhance the stability of solid oxide fuel cell cathodes
journal, January 2016
- Kwon, Hyunguk; Lee, Wonyoung; Han, Jeong Woo
- RSC Advances, Vol. 6, Issue 74
Voltage and partial pressure dependent defect chemistry in (La,Sr)FeO 3−δ thin films investigated by chemical capacitance measurements
journal, January 2018
- Schmid, Alexander; Rupp, Ghislain M.; Fleig, Jürgen
- Physical Chemistry Chemical Physics, Vol. 20, Issue 17
A crystalline and 3D periodically ordered mesoporous quaternary semiconductor for photocatalytic hydrogen generation
journal, January 2018
- Weller, Tobias; Deilmann, Leonie; Timm, Jana
- Nanoscale, Vol. 10, Issue 7
The synergistic effect of cobalt oxide and Gd-CeO 2 dual infiltration in LSCF/CGO cathodes
journal, January 2018
- Tomov, R. I.; Mitchel-Williams, T. B.; Maher, R.
- Journal of Materials Chemistry A, Vol. 6, Issue 12
A systematic evaluation of the role of lanthanide elements in functional complex oxides; implications for energy conversion devices
journal, January 2018
- Wu, Ji; Fujii, Kotaro; Yashima, Masatomo
- Journal of Materials Chemistry A, Vol. 6, Issue 25
Effect of crystal orientation on the segregation of aliovalent dopants at the surface of La 0.6 Sr 0.4 CoO 3
journal, January 2018
- Pişkin, Fatih; Bliem, Roland; Yildiz, Bilge
- Journal of Materials Chemistry A, Vol. 6, Issue 29
Ultrahigh-performance tungsten-doped perovskites for the oxygen evolution reaction
journal, January 2018
- Chen, Gao; Hu, Zhiwei; Zhu, Yanping
- Journal of Materials Chemistry A, Vol. 6, Issue 21
Rare-earth-containing perovskite nanomaterials: design, synthesis, properties and applications
journal, January 2020
- Zeng, Zhichao; Xu, Yueshan; Zhang, Zheshan
- Chemical Society Reviews, Vol. 49, Issue 4
Pathways toward high-performance inorganic perovskite solar cells: challenges and strategies
journal, January 2019
- Li, Bo; Fu, Lin; Li, Shuang
- Journal of Materials Chemistry A, Vol. 7, Issue 36
Effect of oxygen vacancies on electrical conductivity of La 0.5 Sr 0.5 FeO 3−δ from first-principles calculations
journal, January 2020
- Shin, Yonghun; Doh, Kyung-Yeon; Kim, Seong Hun
- Journal of Materials Chemistry A, Vol. 8, Issue 9
Phase competition in the growth of SrCoO x /LaAlO 3 thin films
journal, February 2018
- Zhang, Jie; Meng, Dechao; Huang, Haoliang
- AIP Advances, Vol. 8, Issue 2
Electronic properties and surface reactivity of SrO-terminated SrTiO 3 and SrO-terminated iron-doped SrTiO 3
journal, March 2018
- Staykov, Aleksandar; Tellez, Helena; Druce, John
- Science and Technology of Advanced Materials, Vol. 19, Issue 1
Machine learning for the modeling of interfaces in energy storage and conversion materials
journal, July 2019
- Artrith, Nongnuch
- Journal of Physics: Energy, Vol. 1, Issue 3
Polar or not polar? The interplay between reconstruction, Sr enrichment, and reduction at the (001) surface
journal, January 2020
- Hess, Franziska; Yildiz, Bilge
- Physical Review Materials, Vol. 4, Issue 1
Segregation Resistant Nanocrystalline/Amorphous (La, Sr) CoO 3 -(La,Sr) 2 CoO 4 Composite Cathodes for IT-SOFCs
journal, January 2019
- Sari, Dogancan; Yaşar, Bengisu; Pişkin, Fatih
- Journal of The Electrochemical Society, Vol. 166, Issue 15
A Multiscale Model for Electrochemical Reactions in LSCF Based Solid Oxide Cells
journal, January 2018
- Ma, Linjian; Priya, Pikee; Aluru, N. R.
- Journal of The Electrochemical Society, Vol. 165, Issue 14
The synergistic effect of cobalt oxide and Gd-CeO2 dual infiltration in LSCF/CGO cathodes
journalarticle, January 2018
- Tomov, Ri; Mitchel-Williams, Tb; Maher, R.
- Royal Society of Chemistry (RSC)
Nanostructured Materials and Interfaces for Advanced Ionic Electronic Conducting Oxides
text, January 2019
- Acosta, Matias; Baiutti, F.; Tarancón, A.
- Apollo - University of Cambridge Repository
The Chemical Evolution of the La0.6Sr0.4CoO3−δ Surface Under SOFC Operating Conditions and Its Implications for Electrochemical Oxygen Exchange Activity
journal, October 2018
- Opitz, Alexander K.; Rameshan, Christoph; Kubicek, Markus
- Topics in Catalysis, Vol. 61, Issue 20
Electronic properties and surface reactivity of SrO-terminated SrTiO 3 and SrO-terminated iron-doped SrTiO 3
journal, March 2018
- Staykov, Aleksandar; Tellez, Helena; Druce, John
- Science and Technology of Advanced Materials, Vol. 19, Issue 1
Self-Assembling Oxide Catalyst for Electrochemical Water Splitting
preprint, January 2017
- Bick, Daniel S.; Kindsmueller, Andreas; Cho, Deok-Yong
- arXiv