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Chen K, Jiang SP. Surface Segregation in Solid Oxide Cell Oxygen Electrodes: Phenomena, Mitigation Strategies and Electrochemical Properties. ELECTROCHEM ENERGY R 2020. [DOI: 10.1007/s41918-020-00078-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Abstract
Solid oxide cells (SOCs) are highly efficient and environmentally benign devices that can be used to store renewable electrical energy in the form of fuels such as hydrogen in the solid oxide electrolysis cell mode and regenerate electrical power using stored fuels in the solid oxide fuel cell mode. Despite this, insufficient long-term durability over 5–10 years in terms of lifespan remains a critical issue in the development of reliable SOC technologies in which the surface segregation of cations, particularly strontium (Sr) on oxygen electrodes, plays a critical role in the surface chemistry of oxygen electrodes and is integral to the overall performance and durability of SOCs. Due to this, this review will provide a critical overview of the surface segregation phenomenon, including influential factors, driving forces, reactivity with volatile impurities such as chromium, boron, sulphur and carbon dioxide, interactions at electrode/electrolyte interfaces and influences on the electrochemical performance and stability of SOCs with an emphasis on Sr segregation in widely investigated (La,Sr)MnO3 and (La,Sr)(Co,Fe)O3−δ. In addition, this review will present strategies for the mitigation of Sr surface segregation.
Graphic Abstract
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Huang YL, Pellegrinelli C, Sakbodin M, Wachsman ED. Molecular Reactions of O2 and CO2 on Ionically Conducting Catalyst. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03467] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yi-Lin Huang
- Maryland Energy Innovation Institute, ‡Department of Materials Science and
Engineering, and §Department of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
| | - Christopher Pellegrinelli
- Maryland Energy Innovation Institute, ‡Department of Materials Science and
Engineering, and §Department of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
| | - Mann Sakbodin
- Maryland Energy Innovation Institute, ‡Department of Materials Science and
Engineering, and §Department of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
| | - Eric D. Wachsman
- Maryland Energy Innovation Institute, ‡Department of Materials Science and
Engineering, and §Department of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
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Oxygen Permeation Properties of La 0.6Sr 0.4Ti 0.3Fe 0.7O 3-d-Coated Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3-dDisk-Shaped Membrane. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mosiałek M, Dudek M, Michna A, Tatko M, Kędra A, Zimowska M. Composite cathode materials Ag-Ba0.5Sr0.5Co0.8Fe0.2O3 for solid oxide fuel cells. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2457-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Liu P, Kong J, Liu Q, Yang X, Chen S. Relationship between powder structure and electrochemical performance of Ba0.5Sr0.5Co0.8Fe0.2O3 − δ cathode material. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-013-2374-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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