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Jiao J, Kang X, Yang J, Jia S, Chen X, Peng Y, Chen C, Xing X, Chen Z, He M, Wu H, Han B. Lattice Strain Engineering Boosts CO 2 Electroreduction to C 2+ Products. Angew Chem Int Ed Engl 2024; 63:e202409563. [PMID: 38949085 DOI: 10.1002/anie.202409563] [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: 05/21/2024] [Revised: 06/29/2024] [Accepted: 07/01/2024] [Indexed: 07/02/2024]
Abstract
Regulating the binding effect between the surface of an electrode material and reaction intermediates is essential in highly efficient CO2 electro-reduction to produce high-value multicarbon (C2+) compounds. Theoretical study reveals that lattice tensile strain in single-component Cu catalysts can reduce the dipole-dipole repulsion between *CO intermediates and promotes *OH adsorption, and the high *CO and *OH coverage decreases the energy barrier for C-C coupling. In this work, Cu catalysts with varying lattice tensile strain were fabricated by electro-reducing CuO precursors with different crystallinity, without adding any extra components. The as-prepared single-component Cu catalysts were used for CO2 electro-reduction, and it is discovered that the lattice tensile strain in Cu could enhance the Faradaic efficiency (FE) of C2+ products effectively. Especially, the as-prepared CuTPA catalyst with high lattice tensile strain achieves a FEC2+ of 90.9 % at -1.25 V vs. RHE with a partial current density of 486.1 mA cm-2.
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Affiliation(s)
- Jiapeng Jiao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Chongming District, Shanghai, 202162, China
| | - Xinchen Kang
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Centre for Excellence in Molecular Sciences, Centre for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiahao Yang
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Centre for Excellence in Molecular Sciences, Centre for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shuaiqiang Jia
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Chongming District, Shanghai, 202162, China
| | - Xiao Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Chongming District, Shanghai, 202162, China
| | - Yaguang Peng
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Centre for Excellence in Molecular Sciences, Centre for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chunjun Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Chongming District, Shanghai, 202162, China
| | - Xueqing Xing
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhongjun Chen
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Mingyuan He
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Chongming District, Shanghai, 202162, China
| | - Haihong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Chongming District, Shanghai, 202162, China
| | - Buxing Han
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Chongming District, Shanghai, 202162, China
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Centre for Excellence in Molecular Sciences, Centre for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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Tang YF, Liu LB, Yu M, Liu S, Sui PF, Sun W, Fu XZ, Luo JL, Liu S. Strong effect-correlated electrochemical CO 2 reduction. Chem Soc Rev 2024; 53:9344-9377. [PMID: 39162094 DOI: 10.1039/d4cs00229f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/21/2024]
Abstract
Electrochemical CO2 reduction (ECR) holds great potential to alleviate the greenhouse effect and our dependence on fossil fuels by integrating renewable energy for the electrosynthesis of high-value fuels from CO2. However, the high thermodynamic energy barrier, sluggish reaction kinetics, inadequate CO2 conversion rate, poor selectivity for the target product, and rapid electrocatalyst degradation severely limit its further industrial-scale application. Although numerous strategies have been proposed to enhance ECR performances from various perspectives, scattered studies fail to comprehensively elucidate the underlying effect-performance relationships toward ECR. Thus, this review presents a comparative summary and a deep discussion with respect to the effects strongly-correlated with ECR, including intrinsic effects of materials caused by various sizes, shapes, compositions, defects, interfaces, and ligands; structure-induced effects derived from diverse confinements, strains, and fields; electrolyte effects introduced by different solutes, solvents, cations, and anions; and environment effects induced by distinct ionomers, pressures, temperatures, gas impurities, and flow rates, with an emphasis on elaborating how these effects shape ECR electrocatalytic activities and selectivity and the underlying mechanisms. In addition, the challenges and prospects behind different effects resulting from various factors are suggested to inspire more attention towards high-throughput theoretical calculations and in situ/operando techniques to unlock the essence of enhanced ECR performance and realize its ultimate application.
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Affiliation(s)
- Yu-Feng Tang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
| | - Lin-Bo Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
| | - Mulin Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
| | - Shuo Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
| | - Peng-Fei Sui
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Wei Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
| | - Xian-Zhu Fu
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Jing-Li Luo
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Subiao Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
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3
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Cousins LS, Creissen CE. Multiscale effects in tandem CO 2 electrolysis to C 2+ products. NANOSCALE 2024; 16:3915-3925. [PMID: 38099592 DOI: 10.1039/d3nr05547g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
CO2 electrolysis is a sustainable technology capable of accelerating global decarbonisation through the production of high-value alternatives to fossil-derived products. CO2 conversion can generate critical multicarbon (C2+) products such as drop-in chemicals ethylene and ethanol, however achieving high selectivity from single-component catalysts is often limited by the competitive formation of C1 products. Tandem catalysis can overcome C2+ selectivity limitations through the incorporation of a component that generates a high concentration of CO, the primary reactant involved in the C-C coupling step to form C2+ products. A wide range of approaches to promote tandem CO2 electrolysis have been presented in recent literature that span atomic-scale manipulation to device-scale engineering. Therefore, an understanding of multiscale effects that contribute to selectivity alterations are required to develop effective tandem systems. In this review, we use relevant examples to highlight the complex and interlinked contributions to selectivity and provide an outlook for future development of tandem CO2 electrolysis systems.
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Affiliation(s)
- Lewis S Cousins
- School of Chemical and Physical Sciences, Keele University, Staffordshire, ST5 5BG, UK.
| | - Charles E Creissen
- School of Chemical and Physical Sciences, Keele University, Staffordshire, ST5 5BG, UK.
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Frisch ML, Wu L, Atlan C, Ren Z, Han M, Tucoulou R, Liang L, Lu J, Guo A, Nong HN, Arinchtein A, Sprung M, Villanova J, Richard MI, Strasser P. Unraveling the synergistic effects of Cu-Ag tandem catalysts during electrochemical CO 2 reduction using nanofocused X-ray probes. Nat Commun 2023; 14:7833. [PMID: 38030620 PMCID: PMC10687089 DOI: 10.1038/s41467-023-43693-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023] Open
Abstract
Controlling the selectivity of the electrocatalytic reduction of carbon dioxide into value-added chemicals continues to be a major challenge. Bulk and surface lattice strain in nanostructured electrocatalysts affect catalytic activity and selectivity. Here, we unravel the complex dynamics of synergistic lattice strain and stability effects of Cu-Ag tandem catalysts through a previously unexplored combination of in situ nanofocused X-ray absorption spectroscopy and Bragg coherent diffraction imaging. Three-dimensional strain maps reveal the lattice dynamics inside individual nanoparticles as a function of applied potential and product yields. Dynamic relations between strain, redox state, catalytic activity and selectivity are derived. Moderate Ag contents effectively reduce the competing evolution of H2 and, concomitantly, lead to an enhanced corrosion stability. Findings from this study evidence the power of advanced nanofocused spectroscopy techniques to provide new insights into the chemistry and structure of nanostructured catalysts.
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Affiliation(s)
- Marvin L Frisch
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany
| | - Longfei Wu
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany
- Alexander von Humboldt Foundation, Jean-Paul-Str. 12, 53173, Bonn, Germany
| | - Clément Atlan
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France
- CEA Grenoble, IRIG/MEM/NRX, Université Grenoble Alpes, Grenoble, 38054, France
| | - Zhe Ren
- Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607, Hamburg, Germany
| | - Madeleine Han
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France
| | - Rémi Tucoulou
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France
| | - Liang Liang
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany
| | - Jiasheng Lu
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany
| | - An Guo
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany
| | - Hong Nhan Nong
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany
| | - Aleks Arinchtein
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany
| | - Michael Sprung
- Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607, Hamburg, Germany
| | - Julie Villanova
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France
| | - Marie-Ingrid Richard
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble, 38000, France
- CEA Grenoble, IRIG/MEM/NRX, Université Grenoble Alpes, Grenoble, 38054, France
| | - Peter Strasser
- Department of Chemistry, Chemical Engineering Division, Technische Universitaet Berlin, Str. des 17. Juni 124, 10623, Berlin, Germany.
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Maitra S, Roy K, Ghosh D, Kumar P. Lattice strain induced d-band centre engineering enabled pseudocapacitive energy storage in 2D hypo-hyper electronic V-NiCo 2O 4 for asymmetric supercapacitors. NANOSCALE 2023; 15:18368-18382. [PMID: 37933197 DOI: 10.1039/d3nr03251e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Understanding the role of fundamental structural engineering of materials in unravelling the underlying rudimentary electronic structure-dependent charge storage mechanisms is crucial for developing new strategic approaches toward high-performance electrochemical energy storage devices. Here, we demonstrate the role of strain engineering by V doping-induced lattice contraction in NiCo2O4 for increasing the energy density and power density of aqueous asymmetric hybrid supercapacitors. For application in energy storage, we demonstrate the influence of electron-deficient V4+/5+ doping in electron-rich Ni2+ sites, which has been found to result in the formation of a hypo-hyper electronically coupled cation pair causing a shift in the d-band and O 2p band centres and distortion of CoO6 octahedra. Optimization of V doping to 3 mol%, achieved by a binder-free one-step hydrothermal method, has yielded a 96% increase in specific capacitance of up to 2316 F g-1 from 1193 F g-1 in pristine materials at 1 A g-1 in a three-electrode configuration with a coulombic efficiency (η%) of 94% and a 24% increase in rate capacity. A two-fold increase in specific capacitance in the pouch cell device, fabricated with a functionalized carbon nanosphere positive electrode, has been observed for the V-doped samples at 1 A g-1 with a η% of 97% and a maximum energy density of 96.3 W h g-1 and a maximum power density of 8733.6 W g-1 which are 41% and 24.3% higher than the pristine device, respectively. Excellent cycling stability of 95.4% capacitance retention has been observed after 6000 cycles. DFT calculations have been carried out to understand the previously unexplored effect of lattice strain on charge transport and quantum capacitance, and ultimately its effect on the transition state kinetics of energy storage faradaic reaction mechanisms. The aim of this work is to establish a fresh perspective on developing a deep understanding of the fundamental electronic and structural properties of materials by drawing in concepts from descriptor models in electrocatalysis to reveal the role of lattice strain and d-band centre tailoring in enabling pseudocapacitive energy storage.
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Affiliation(s)
- Soumyajit Maitra
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India.
| | - Krishnendu Roy
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India.
| | - Dibyendu Ghosh
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India.
| | - Praveen Kumar
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India.
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6
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Wang H, Zhang H, Huang Y, Wang H, Ozden A, Yao K, Li H, Guo Q, Liu Y, Vomiero A, Wang Y, Qian Z, Li J, Wang Z, Sun X, Liang H. Strain in Copper/Ceria Heterostructure Promotes Electrosynthesis of Multicarbon Products. ACS NANO 2023; 17:346-354. [PMID: 36574462 DOI: 10.1021/acsnano.2c08453] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Elastic strains in metallic catalysts induce enhanced selectivity for carbon dioxide reduction (CO2R) toward valuable multicarbon (C2+) products. However, under working conditions, the structure of catalysts inevitably undergoes reconstruction, hardly retaining the initial strain. Herein, we present a metal/metal oxide synthetic strategy to introduce and maintain the tensile strain in a copper/ceria heterostructure, enabled by the presence of a thin interface layer of Cu2O/CeO2. The tensile strain in the copper domain and deficient electron environment around interfacial Cu sites resulted in strengthened adsorption of carbonaceous intermediates and promoted *CO dimerization. The strain effect in the copper/ceria heterostructure leads to an improved C2+ selectivity with a maximum Faradaic efficiency of 76.4% and a half-cell power conversion efficiency of 49.1%. The fundamental insights gained from this system can facilitate the rational design of heterostructure catalysts for CO2R.
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Affiliation(s)
- Haibin Wang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Ministry of Education, Tianjin University, Tianjin 300350, P. R. China
| | - Hao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, P. R. China
| | - Yan Huang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Ministry of Education, Tianjin University, Tianjin 300350, P. R. China
| | - Haiyu Wang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
| | - Adnan Ozden
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | - Kaili Yao
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
| | - Huamin Li
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
| | - Qianying Guo
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
| | - Yongchang Liu
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
- State Key Lab of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, P. R. China
| | - Alberto Vomiero
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology 97187 Luleå, Sweden
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice 30172 Venezia Mestre, Italy
| | - Yuhang Wang
- Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, P. R. China
| | - Zhao Qian
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education Shandong University, Jinan 250061, P. R. China
| | - Jun Li
- Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ziyun Wang
- School of Chemical Sciences, the University of Auckland, Auckland 1010, New Zealand
| | - Xuhui Sun
- Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, P. R. China
| | - Hongyan Liang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Ministry of Education, Tianjin University, Tianjin 300350, P. R. China
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Li J, Shi T, Tian F, Liu S, Fan Q, Wu Y, Sun M, Zhang H, Lei Y, Liu F, Zeng S. Elucidating reaction pathways in CO2 electroreduction: case study of Ag and Cu2O@Ag catalysts. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Structural evolution and strain generation of derived-Cu catalysts during CO 2 electroreduction. Nat Commun 2022; 13:4857. [PMID: 35982055 PMCID: PMC9388520 DOI: 10.1038/s41467-022-32601-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 08/09/2022] [Indexed: 11/13/2022] Open
Abstract
Copper (Cu)-based catalysts generally exhibit high C2+ selectivity during the electrochemical CO2 reduction reaction (CO2RR). However, the origin of this selectivity and the influence of catalyst precursors on it are not fully understood. We combine operando X-ray diffraction and operando Raman spectroscopy to monitor the structural and compositional evolution of three Cu precursors during the CO2RR. The results indicate that despite different kinetics, all three precursors are completely reduced to Cu(0) with similar grain sizes (~11 nm), and that oxidized Cu species are not involved in the CO2RR. Furthermore, Cu(OH)2- and Cu2(OH)2CO3-derived Cu exhibit considerable tensile strain (0.43%~0.55%), whereas CuO-derived Cu does not. Theoretical calculations suggest that the tensile strain in Cu lattice is conducive to promoting CO2RR, which is consistent with experimental observations. The high CO2RR performance of some derived Cu catalysts is attributed to the combined effect of the small grain size and lattice strain, both originating from the in situ electroreduction of precursors. These findings establish correlations between Cu precursors, lattice strains, and catalytic behaviors, demonstrating the unique ability of operando characterization in studying electrochemical processes. Copper catalysts derived from oxidized precursors typically exhibit high selectivity for CO2 electroreduction to multicarbon products, yet the influencing factors that control the selectivity need further investigation. Here, the authors reveal that the high selectivity stems from small grain size and lattice strain due to in situ reduction of precursors.
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9
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Chen Z, Wang X, Wang L, Wu YA. Ag@Pd bimetallic structures for enhanced electrocatalytic CO 2 conversion to CO: an interplay between the strain effect and ligand effect. NANOSCALE 2022; 14:11187-11196. [PMID: 35904075 DOI: 10.1039/d2nr03079a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Electrochemical CO2 reduction reactions provide a promising path to effectively convert CO2 into valuable chemicals and fuels for industries. Among the many CO2 conversion catalysts, Pd stands out as a promising catalyst for effective CO2 to CO conversion. Here, using the misfit strain strategy, Ag@Pd bimetallic nanoparticles with different Pd overlayer contents were prepared as CO2 reduction catalysts. By varying the Pd overlayer content, all the Ag@Pd bimetallic nanoparticles exhibited superior CO2 conversion performance over their Pd and Ag nanoparticle counterparts. An optimal Pd-to-Ag ratio of 1.5 : 1 yielded the highest CO faradaic efficiency of 94.3% at -0.65 V vs. RHE with a high CO specific current density of 3.9 mA cm-2. It was found that the Pd content can substantially affect the interplay between the strain effect and ligand effect, resulting in optimized binding properties of the reaction intermediates on the catalyst surface, thereby enhancing the CO2 reduction performance.
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Affiliation(s)
- Zuolong Chen
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Lei Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Yimin A Wu
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
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10
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Zhao C, Shu C, Zheng R, Du D, Ren L, He M, Li R, Xu H, Wen X, Long J. Adjusting the d-band center of metallic sites in NiFe-based Bimetal-organic frameworks via tensile strain to achieve High-performance oxygen electrode catalysts for Lithium-oxygen batteries. J Colloid Interface Sci 2021; 607:1215-1225. [PMID: 34571308 DOI: 10.1016/j.jcis.2021.09.077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 12/01/2022]
Abstract
Developing effective electrocatalyst and fundamentally understanding the corresponding working mechanism are both urgently desired to overcome the current challenges facing lithium-oxygen batteries (LOBs). Herein, a series of NiFe-based bimetal-organic frameworks (NiFe-MOFs) with certain internal tensile strain are fabricated via a simple organic linker scission strategy, and served as cathode catalysts for LOBs. The introduced tensile strain broadens the inherent interatomic distances, leading to an upshifted d-band center of metallic sites and thus the enhancement of the adsorption strength of catalysts surface towards intermediates, which is contributed to rationally regulate the crystallinity of discharge product Li2O2. As a result, the uniformly distributed amorphous film-like Li2O2 tightly deposits on the surface of strain-regulated MOF, resulting in excellent electrochemical performance of LOBs, including a large discharge capacity of 12317.4 mAh g-1 at 100 mA g-1 and extended long-term cyclability of 357 cycles. This work presents a novel insight in adjusting the adsorption strength of cathode catalysts towards intermediates via introducing tensile strain in catalysts, which is a pragmatic strategy for improving the performance of LOBs.
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Affiliation(s)
- Chuan Zhao
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Chaozhu Shu
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China.
| | - Ruixing Zheng
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Dayue Du
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Longfei Ren
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Miao He
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Runjing Li
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Haoyang Xu
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Xiaojuan Wen
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China
| | - Jianping Long
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan 610059, PR China.
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