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Shen Y, Wang S, Li R, Lv H, Li M, Ta N, Zhang X, Song Y, Fu Q, Wang G, Bao X. In Situ Self-Assembled Active and Stable Ir@MnO x/La 0.7Sr 0.3Cr 0.9Ir 0.1O 3-δ Interfaces for CO 2 Electrolysis. Angew Chem Int Ed Engl 2024; 63:e202404861. [PMID: 38738502 DOI: 10.1002/anie.202404861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/23/2024] [Accepted: 05/11/2024] [Indexed: 05/14/2024]
Abstract
Solid oxide electrolysis cells are prospective approaches for CO2 utilization but face significant challenges due to the sluggish reaction kinetics and poor stability of the fuel electrodes. Herein, we strategically addressed the long-standing trade-off phenomenon between enhanced exsolution and improved structural stability via topotactic ion exchange. The surface dynamic reconstruction of the MnOx/La0.7Sr0.3Cr0.9Ir0.1O3-δ (LSCIr) catalyst was visualized at the atomic scale. Compared with the Ir@LSCIr interface, the in situ self-assembled Ir@MnOx/LSCIr interface exhibited greater CO2 activation and easily removable carbonate intermediates, thus reached a 42 % improvement in CO2 electrolysis performance at 1.6 V. Furthermore, an improved CO2 electrolysis stability was achieved due to the uniformly wrapped MnOx shell of the Ir@MnOx/LSCIr cathode. Our approach enables a detailed understanding of the dynamic microstructure evolution at active interfaces and provides a roadmap for the rational design and evaluation of efficient metal/oxide catalysts for CO2 electrolysis.
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Affiliation(s)
- Yuxiang Shen
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- Energy College, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Shuo Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Rongtan Li
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Houfu Lv
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- Suzhou Laboratory, Suzhou, 215000, China
| | - Mingrun Li
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Na Ta
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xiaomin Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yuefeng Song
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Qiang Fu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Guoxiong Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xinhe Bao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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Weber ML, Šmíd B, Breuer U, Rose MA, Menzler NH, Dittmann R, Waser R, Guillon O, Gunkel F, Lenser C. Space charge governs the kinetics of metal exsolution. NATURE MATERIALS 2024; 23:406-413. [PMID: 38168807 PMCID: PMC10917682 DOI: 10.1038/s41563-023-01743-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 10/30/2023] [Indexed: 01/05/2024]
Abstract
Nanostructured composite electrode materials play a major role in the fields of catalysis and electrochemistry. The self-assembly of metallic nanoparticles on oxide supports via metal exsolution relies on the transport of reducible dopants towards the perovskite surface to provide accessible catalytic centres at the solid-gas interface. At surfaces and interfaces, however, strong electrostatic gradients and space charges typically control the properties of oxides. Here we reveal that the nature of the surface-dopant interaction is the main determining factor for the exsolution kinetics of nickel in SrTi0.9Nb0.05Ni0.05O3-δ. The electrostatic interaction of dopants with surface space charge regions forming upon thermal oxidation results in strong surface passivation, which manifests in a retarded exsolution response. We furthermore demonstrate the controllability of the exsolution response via engineering of the perovskite surface chemistry. Our findings indicate that tailoring the electrostatic gradients at the perovskite surface is an essential step to improve exsolution-type materials in catalytic converters.
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Affiliation(s)
- Moritz L Weber
- Peter Gruenberg Institute - Electronic Materials (PGI-7), Forschungszentrum Juelich GmbH, Juelich, Germany.
- Institute of Energy and Climate Research - Materials Synthesis and Processing (IEK-1), Forschungszentrum Juelich GmbH, Juelich, Germany.
- Juelich-Aachen Research Alliance (JARA-FIT), Juelich, Germany.
- Institute of Mineral Engineering (GHI), RWTH Aachen University, Aachen, Germany.
| | - Břetislav Šmíd
- Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
| | - Uwe Breuer
- Central Institute for Engineering, Electronics and Analytics (ZEA-3), Forschungszentrum Juelich GmbH, Juelich, Germany
| | - Marc-André Rose
- Peter Gruenberg Institute - Electronic Materials (PGI-7), Forschungszentrum Juelich GmbH, Juelich, Germany
- Juelich-Aachen Research Alliance (JARA-FIT), Juelich, Germany
- Institute for Electronic Materials (IWE 2), RWTH Aachen University, Aachen, Germany
| | - Norbert H Menzler
- Institute of Energy and Climate Research - Materials Synthesis and Processing (IEK-1), Forschungszentrum Juelich GmbH, Juelich, Germany
- Institute of Mineral Engineering (GHI), RWTH Aachen University, Aachen, Germany
| | - Regina Dittmann
- Peter Gruenberg Institute - Electronic Materials (PGI-7), Forschungszentrum Juelich GmbH, Juelich, Germany
- Juelich-Aachen Research Alliance (JARA-FIT), Juelich, Germany
| | - Rainer Waser
- Peter Gruenberg Institute - Electronic Materials (PGI-7), Forschungszentrum Juelich GmbH, Juelich, Germany
- Juelich-Aachen Research Alliance (JARA-FIT), Juelich, Germany
- Institute for Electronic Materials (IWE 2), RWTH Aachen University, Aachen, Germany
| | - Olivier Guillon
- Institute of Energy and Climate Research - Materials Synthesis and Processing (IEK-1), Forschungszentrum Juelich GmbH, Juelich, Germany
- Institute of Mineral Engineering (GHI), RWTH Aachen University, Aachen, Germany
- Juelich-Aachen Research Alliance (JARA-Energy), Juelich, Germany
| | - Felix Gunkel
- Peter Gruenberg Institute - Electronic Materials (PGI-7), Forschungszentrum Juelich GmbH, Juelich, Germany.
- Juelich-Aachen Research Alliance (JARA-FIT), Juelich, Germany.
| | - Christian Lenser
- Institute of Energy and Climate Research - Materials Synthesis and Processing (IEK-1), Forschungszentrum Juelich GmbH, Juelich, Germany.
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Chen X, Ning Y, Pei J, Zhang G, Fu Q. External Voltage-Induced Restructuring of the Solid-State Electrode/Electrolyte Interface Revealed by X-ray Photoelectron Spectroscopy Depth Profiling Analysis. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10908-10915. [PMID: 38363637 DOI: 10.1021/acsami.3c16478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Solid/solid interfaces between electrodes and electrolytes play an important role in all-solid-state energy devices, while microscopic investigations of the buried interfaces remain challenging. Here, we construct metal|yttria-stabilized zirconia (YSZ)|Au model cells consisting of a metal film cathode (metal (M) = Au, Ni, and Ag), a single crystalline YSZ electrolyte, and a Au film anode, and use quasi in situ X-ray photoelectron spectroscopy depth profiling analysis to investigate the restructuring of buried interfaces between metal cathodes and YSZ. After applying 2.9 V at 500 °C, interfacial Zr4+ ions in the electrolyte are reduced and then interdiffuse with metal cathode overlayers, forming a miscible ZrM alloy interlayer. The interface restructuring degree follows the sequence of Au|YSZ|Au > Ni|YSZ|Au > Ag|YSZ|Au. Meanwhile, surface segregation of Zr on the cathode surface is also observed, whose degree follows the sequence of Ag|YSZ|Au > Ni|YSZ|Au > Au|YSZ|Au. Notably, the strong ZrM alloy formation enhances the interface restructuring but suppresses the Zr surface segregation. This work provides a fundamental understanding of the interfacial reaction at the buried electrode/electrolyte interface.
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Affiliation(s)
- Xiaoqin Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanxiao Ning
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jinhui Pei
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guohui Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Qiang Fu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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Liu S, Dun C, Jiang Q, Xuan Z, Yang F, Guo J, Urban JJ, Swihart MT. Challenging thermodynamics: combining immiscible elements in a single-phase nano-ceramic. Nat Commun 2024; 15:1167. [PMID: 38326434 PMCID: PMC10850329 DOI: 10.1038/s41467-024-45413-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/22/2024] [Indexed: 02/09/2024] Open
Abstract
The Hume-Rothery rules governing solid-state miscibility limit the compositional space for new inorganic material discovery. Here, we report a non-equilibrium, one-step, and scalable flame synthesis method to overcome thermodynamic limits and incorporate immiscible elements into single phase ceramic nanoshells. Starting from prototype examples including (NiMg)O, (NiAl)Ox, and (NiZr)Ox, we then extend this method to a broad range of Ni-containing ceramic solid solutions, and finally to general binary combinations of elements. Furthermore, we report an "encapsulated exsolution" phenomenon observed upon reducing the metastable porous (Ni0.07Al0.93)Ox to create ultra-stable Ni nanoparticles embedded within the walls of porous Al2O3 nanoshells. This nanoconfined structure demonstrated high sintering resistance during 640 h of catalysis of CO2 reforming of methane, maintaining constant 96% CH4 and CO2 conversion at 800 °C and dramatically outperforming conventional catalysts. Our findings could greatly expand opportunities to develop novel inorganic energy, structural, and functional materials.
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Affiliation(s)
- Shuo Liu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Chaochao Dun
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| | - Qike Jiang
- Instrumentation and Service Center for Physical Sciences, Westlake University, Hangzhou, Zhejiang, 310024, China
| | - Zhengxi Xuan
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
- RENEW Institute, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Feipeng Yang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jinghua Guo
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jeffrey J Urban
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
- RENEW Institute, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
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Kim YH, Jeong H, Won BR, Jeon H, Park CH, Park D, Kim Y, Lee S, Myung JH. Nanoparticle Exsolution on Perovskite Oxides: Insights into Mechanism, Characteristics and Novel Strategies. NANO-MICRO LETTERS 2023; 16:33. [PMID: 38015283 PMCID: PMC10684483 DOI: 10.1007/s40820-023-01258-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/19/2023] [Indexed: 11/29/2023]
Abstract
Supported nanoparticles have attracted considerable attention as a promising catalyst for achieving unique properties in numerous applications, including fuel cells, chemical conversion, and batteries. Nanocatalysts demonstrate high activity by expanding the number of active sites, but they also intensify deactivation issues, such as agglomeration and poisoning, simultaneously. Exsolution for bottom-up synthesis of supported nanoparticles has emerged as a breakthrough technique to overcome limitations associated with conventional nanomaterials. Nanoparticles are uniformly exsolved from perovskite oxide supports and socketed into the oxide support by a one-step reduction process. Their uniformity and stability, resulting from the socketed structure, play a crucial role in the development of novel nanocatalysts. Recently, tremendous research efforts have been dedicated to further controlling exsolution particles. To effectively address exsolution at a more precise level, understanding the underlying mechanism is essential. This review presents a comprehensive overview of the exsolution mechanism, with a focus on its driving force, processes, properties, and synergetic strategies, as well as new pathways for optimizing nanocatalysts in diverse applications.
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Affiliation(s)
- Yo Han Kim
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Hyeongwon Jeong
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Bo-Ram Won
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Hyejin Jeon
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Chan-Ho Park
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Dayoung Park
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Yeeun Kim
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Somi Lee
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jae-Ha Myung
- Department of Materials Science and Engineering, Incheon National University, Incheon, 22012, Republic of Korea.
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