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Yu H, Jeong I, Jang S, Kim D, Im HN, Lee CW, Wachsman ED, Lee KT. Lowering the Temperature of Solid Oxide Electrochemical Cells Using Triple-Doped Bismuth Oxides. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2306205. [PMID: 37847822 DOI: 10.1002/adma.202306205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/05/2023] [Indexed: 10/19/2023]
Abstract
Despite the great potential of solid oxide electrochemical cells (SOCs) as highly efficient energy conversion devices, the undesirable high operating temperature limits their wider applicability. Herein, a novel approach to developing high-performance low-temperature SOCs (LT-SOCs) is presented through the use of an Er, Y, and Zr triple-doped bismuth oxide (EYZB). This study demonstrates that EYZB exhibits > 147 times higher ionic conductivity of 0.44 S cm-1 at 600 °C compared to commercial Y-stabilized zirconia electrolyte with excellent stability over 1000 h. By rationally incorporating EYZB in composite electrodes and bilayer electrolytes, the zirconia-based electrolyte LT-SOC achieves the unprecedentedly high performance of 3.45 and 2.02 W cm-2 in the fuel cell mode and 2.08 and 0.95 A cm-2 in the electrolysis cell mode at 700 °C and 600 °C, respectively. Further, a distinctive microstructural feature of EYZB that largely extends triple phase boundary at the interface is revealed through digital twinning. This work provides insights for developing high-performance LT-SOCs.
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Affiliation(s)
- Hyeongmin Yu
- Department of Mechanical Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Incheol Jeong
- Department of Mechanical Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Seungsoo Jang
- Department of Mechanical Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Doyeub Kim
- Department of Mechanical Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Ha-Ni Im
- Department of Mechanical Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Chan-Woo Lee
- Computational Science and Engineering Laboratory, KIER, Daejeon, 34129, Republic of Korea
| | - Eric D Wachsman
- Maryland Energy Innovation Institute, Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Kang Taek Lee
- Department of Mechanical Engineering, KAIST, Daejeon, 34141, Republic of Korea
- KAIST Graduate School of Green Growth & Sustainability, Daejeon, 34141, Republic of Korea
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Kim JK, Kim S, Kim S, Kim HJ, Kim K, Jung W, Han JW. Dynamic Surface Evolution of Metal Oxides for Autonomous Adaptation to Catalytic Reaction Environments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2203370. [PMID: 35738568 DOI: 10.1002/adma.202203370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Metal oxides possessing distinctive physical/chemical properties due to different crystal structures and stoichiometries play a pivotal role in numerous current technologies, especially heterogeneous catalysis for production/conversion of high-valued chemicals and energy. To date, many researchers have investigated the effect of the structure and composition of these materials on their reactivity to various chemical and electrochemical reactions. However, metal oxide surfaces evolve from their initial form under dynamic reaction conditions due to the autonomous behaviors of the constituent atoms to adapt to the surrounding environment. Such nanoscale surface phenomena complicate reaction mechanisms and material properties, interrupting the clarification of the origin of functionality variations in reaction environments. In this review, the current findings on the spontaneous surface reorganization of metal oxides during reactions are categorized into three types: 1) the appearance of nano-sized second phase from oxides, 2) the (partial) encapsulation of oxide atoms toward supported metal surfaces, and 3) the oxide surface reconstruction with selective cation leaching in aqueous solution. Then their effects on each reaction are summarized in terms of activity and stability, providing novel insight for those who design metal-oxide-based catalytic materials.
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Affiliation(s)
- Jun Kyu Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Sangwoo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Seunghyun Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Hyung Jun Kim
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, 37673, South Korea
| | - Kyeounghak Kim
- Department of Chemical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, South Korea
| | - WooChul Jung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Jeong Woo Han
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, 37673, South Korea
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Solid-State Electrochemistry and Solid Oxide Fuel Cells: Status and Future Prospects. ELECTROCHEM ENERGY R 2022. [DOI: 10.1007/s41918-022-00160-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
AbstractSolid-state electrochemistry (SSE) is an interdisciplinary field bridging electrochemistry and solid-state ionics and deals primarily with the properties of solids that conduct ions in the case of ionic conducting solid electrolytes and electrons and/or electron holes in the case of mixed ionic and electronic conducting materials. However, in solid-state devices such as solid oxide fuel cells (SOFCs), there are unique electrochemical features due to the high operating temperature (600–1 000 °C) and solid electrolytes and electrodes. The solid-to-solid contact at the electrode/electrolyte interface is one of the most distinguished features of SOFCs and is one of the fundamental reasons for the occurance of most importance phenomena such as shift of the equipotential lines, the constriction effect, polarization-induced interface formation, etc. in SOFCs. The restriction in placing the reference electrode in solid electrolyte cells further complicates the SSE in SOFCs. In addition, the migration species at the solid electrode/electrolyte interface is oxygen ions, while in the case of the liquid electrolyte system, the migration species is electrons. The increased knowledge and understanding of SSE phenomena have guided the development of SOFC technologies in the last 30–40 years, but thus far, no up-to-date reviews on this important topic have appeared. The purpose of the current article is to review and update the progress and achievements in the SSE in SOFCs, largely based on the author’s past few decades of research and understanding in the field, and to serve as an introduction to the basics of the SSE in solid electrolyte devices such as SOFCs.
Graphical abstract
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Kagomiya I, Hirano T, Yagi Y, Kakimoto KI, Yamamoto S, Matsuda I. Surface Exchange Reaction of Mixed Conductive La 0.65Ca 0.35FeO 3-δ during Oxygen Evolution and Incorporation as Traced by Operando X-ray Photoelectron Spectroscopy. ACS APPLIED MATERIALS & INTERFACES 2022; 14:48194-48199. [PMID: 36221309 DOI: 10.1021/acsami.2c10700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
High oxygen permeability of mixed conductive La0.65Ca0.35FeO3-δ (LCF) is applicable to pure oxygen gas generators and cathodes for solid oxide fuel cells, etc.; however, lower surface exchange reactions at temperatures below 800 °C reduce permeability. To understand the microscopic surface reaction mechanism, operando soft X-ray photoelectron spectroscopy of an LCF film surface was conducted during the evolution and incorporation of oxygen. LCF film was prepared on yttria-stabilized zirconia and a current was applied throughout the film at ∼600 °C. From operando X-ray photoelectron spectra, surface oxide species involved in the surface exchange reaction obviously appeared on the film during the evolution of oxygen from the surface. The number of surface oxide species abruptly decreased during incorporation of oxygen. By applying the current from a negative to positive value, the numbers of surface oxide species and ligand holes near Fe3+ ions on the surface both significantly increased. The results infer that ligand holes in the Fe 3d-O 2p hybrid orbitals correspond to active reaction sites at which surface oxide species change to oxygen molecules. Increasing the number of active reaction sites is key to improving oxygen evolution of mixed conductive oxides.
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Affiliation(s)
- Isao Kagomiya
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Showa-Ku, Nagoya 466-8555, Japan
| | - Tomohiro Hirano
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Showa-Ku, Nagoya 466-8555, Japan
| | - Yutaro Yagi
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Showa-Ku, Nagoya 466-8555, Japan
| | - Ken-Ichi Kakimoto
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Showa-Ku, Nagoya 466-8555, Japan
| | - Susumu Yamamoto
- International Center for Synchrotron Radiation Innovation Smart, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Aoba-Ku, Sendai-Shi, Miyagi 980-8577, Japan
| | - Iwao Matsuda
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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McPhail SJ, Frangini S, Laurencin J, Effori E, Abaza A, Padinjarethil AK, Hagen A, Léon A, Brisse A, Vladikova D, Burdin B, Bianchi FR, Bosio B, Piccardo P, Spotorno R, Uchida H, Polverino P, Adinolfi EA, Postiglione F, Lee J, Moussaoui H, Van herle J. Addressing planar solid oxide cell degradation mechanisms: A critical review of selected components. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Stephen J. McPhail
- ENEA Agenzia Nazionale per le Nuove Tecnologie L'Energia e lo Sviluppo Economico Sostenibile Rome Italy
| | - Stefano Frangini
- ENEA Agenzia Nazionale per le Nuove Tecnologie L'Energia e lo Sviluppo Economico Sostenibile Rome Italy
| | | | - Elisa Effori
- Univ. Grenoble Alpes – CEA/LITEN Grenoble France
| | - Amira Abaza
- Univ. Grenoble Alpes – CEA/LITEN Grenoble France
| | | | - Anke Hagen
- DTU Energy Technical University of Denmark Kgs. Lyngby Denmark
| | - Aline Léon
- EIFER European Institute for Energy Research Karlsruhe Germany
| | | | - Daria Vladikova
- IEES Institute of Electrochemistry and Energy Systems Bulgarian Academy of Science Sofia Bulgaria
| | - Blagoy Burdin
- IEES Institute of Electrochemistry and Energy Systems Bulgarian Academy of Science Sofia Bulgaria
| | - Fiammetta Rita Bianchi
- Department of Civil Chemical and Environmental Engineering. University of Genoa Genova Italy
| | - Barbara Bosio
- Department of Civil Chemical and Environmental Engineering. University of Genoa Genova Italy
| | - Paolo Piccardo
- Department of Chemistry and Industrial Chemistry University of Genoa Genova Italy
| | - Roberto Spotorno
- Department of Chemistry and Industrial Chemistry University of Genoa Genova Italy
| | - Hiroyuki Uchida
- Clean Energy Research Center University of Yamanashi Kofu Japan
| | | | | | - Fabio Postiglione
- Department of Information and Electrical Engineering and Applied Mathematics (DEIM) University of Salerno Fisciano Italy
| | - Jong‐Ho Lee
- Korea Institute of Science and Technology (KIST) and University of Science and Technology (UST) Seoul Korea
| | - Hamza Moussaoui
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Faculty of Engineering (STI) Inst. Mech. Eng (IGM) Group of Energy Materials (GEM) Sion Switzerland
| | - Jan Van herle
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Faculty of Engineering (STI) Inst. Mech. Eng (IGM) Group of Energy Materials (GEM) Sion Switzerland
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Wang Q, Fan H, Xiao Y, Zhang Y. Applications and recent advances of rare earth in solid oxide fuel cells. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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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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Choi M, Kim S, Paik J, Lee W. Enhanced Cr tolerance of perovskite oxide via Gd0.1Ce0.9O2 surface modifications. KOREAN J CHEM ENG 2020. [DOI: 10.1007/s11814-020-0562-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ultra-fast fabrication of anode-supported solid oxide fuel cells via microwave-assisted sintering technology. KOREAN J CHEM ENG 2020. [DOI: 10.1007/s11814-020-0578-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Qiu P, Yang X, Zou L, Zhu T, Yuan Z, Jia L, Li J, Chen F. LaCrO 3-Coated La 0.6Sr 0.4Co 0.2Fe 0.8O 3-δ Core-Shell Structured Cathode with Enhanced Cr Tolerance for Intermediate-Temperature Solid Oxide Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29133-29142. [PMID: 32510917 DOI: 10.1021/acsami.0c01962] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) is a common cathode material for intermediate-temperature solid oxide fuel cells because of its excellent oxygen reduction reaction catalytic activity. However, the Cr-poisoning effect is a severe issue, causing electrochemical performance degradation. For the development of a LSCF-based cathode with excellent Cr tolerance, a LaCrO3-coated LSCF core-shell structured (LCr@LSCF) cathode was prepared via the solution infiltration method. After the cathode was coated with a LCr shell, the long-term stability and Cr tolerance were obviously improved, at the price of sacrificing some electrochemical performance. The development of a LCr@LSCF cathode with eye-catching Cr tolerance is of great significance to the commercialization of LSCF.
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Affiliation(s)
| | | | - Lu Zou
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China
| | | | - Zhihao Yuan
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Lichao Jia
- Center for Fuel Cell Innovation, School of Materials Science and Engineering, State Key Lab of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jian Li
- Center for Fuel Cell Innovation, School of Materials Science and Engineering, State Key Lab of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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