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Ortiz Peña N, Ihiawakrim D, Han M, Lassalle-Kaiser B, Carenco S, Sanchez C, Laberty-Robert C, Portehault D, Ersen O. Morphological and Structural Evolution of Co 3O 4 Nanoparticles Revealed by in Situ Electrochemical Transmission Electron Microscopy during Electrocatalytic Water Oxidation. ACS NANO 2019; 13:11372-11381. [PMID: 31584800 DOI: 10.1021/acsnano.9b04745] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Unveiling the mechanism of electrocatalytic processes is fundamental for the search of more efficient and stable electrode materials for clean energy conversion devices. Although several in situ techniques are now available to track structural changes during electrocatalysis, especially of water oxidation, a direct observation, in real space, of morphological changes of nanostructured electrocatalysts is missing. Herein, we implement an in situ electrochemical Transmission Electron Microscopy (in situ EC-TEM) methodology for studying electrocatalysts of the oxygen evolution reaction (OER) during operation, by using model cobalt oxide Co3O4 nanoparticles. The observation conditions were optimized to mimic standard electrochemistry experiments in a regular electrochemical cell, allowing cyclic voltammetry and chronopotentiometry to be performed in similar conditions in situ and ex situ. This in situ EC-TEM method enables us to observe the chemical, morphological, and structural evolutions occurring in the initial nanoparticle-based electrode exposed to different aqueous electrolytes and under OER conditions. The results show that surface amorphization occurs, yielding a nanometric cobalt (oxyhydr)oxide-like phase during OER. This process is irreversible and occurs to an extent that has not been described before. Furthermore, we show that the pH and counterions of the electrolytes impact this restructuration, shedding light on the materials properties in neutral phosphate electrolytes. In addition to the structural changes followed in situ during the electrochemical measurements, this study demonstrates that it is possible to rely on in situ electrochemical TEM to reveal processes in electrocatalysts while preserving a good correlation with ex situ regular electrochemistry.
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Affiliation(s)
- Nathaly Ortiz Peña
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) , UMR 7504 CNRS - Université de Strasbourg , 23 rue du Loess , BP 43 , Strasbourg Cedex 2, France
| | - Dris Ihiawakrim
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) , UMR 7504 CNRS - Université de Strasbourg , 23 rue du Loess , BP 43 , Strasbourg Cedex 2, France
| | - Madeleine Han
- Sorbonne Université, CNRS, Collège de France , Laboratoire Chimie de la Matière Condensée de Paris , 4 Place Jussieu , 75005 Paris , France
- Synchrotron SOLEIL , L'Orme des Merisiers , Saint-Aubin, 91192 Gif sur Yvette , France
| | | | - Sophie Carenco
- Sorbonne Université, CNRS, Collège de France , Laboratoire Chimie de la Matière Condensée de Paris , 4 Place Jussieu , 75005 Paris , France
| | - Clément Sanchez
- Sorbonne Université, CNRS, Collège de France , Laboratoire Chimie de la Matière Condensée de Paris , 4 Place Jussieu , 75005 Paris , France
| | - Christel Laberty-Robert
- Sorbonne Université, CNRS, Collège de France , Laboratoire Chimie de la Matière Condensée de Paris , 4 Place Jussieu , 75005 Paris , France
| | - David Portehault
- Sorbonne Université, CNRS, Collège de France , Laboratoire Chimie de la Matière Condensée de Paris , 4 Place Jussieu , 75005 Paris , France
| | - Ovidiu Ersen
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) , UMR 7504 CNRS - Université de Strasbourg , 23 rue du Loess , BP 43 , Strasbourg Cedex 2, France
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52
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Chowdhury FA. Recent advances and demonstrated potentials for clean hydrogen via overall solar water splitting. ACTA ACUST UNITED AC 2019. [DOI: 10.1557/adv.2019.444] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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53
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Keane TP, Nocera DG. Selective Production of Oxygen from Seawater by Oxidic Metallate Catalysts. ACS OMEGA 2019; 4:12860-12864. [PMID: 31460412 PMCID: PMC6690569 DOI: 10.1021/acsomega.9b01751] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Although the emphasis of water splitting is typically on hydrogen generation, there is a value in the oxygen byproduct especially for life support in field operations. For such applications, the production of a pure, unadulterated oxygen stream is highly desired under environmental conditions. Here, we demonstrate that self-healing oxygen evolution catalysts composed of cobalt or nickel are capable of selectively producing oxygen from both 0.5 M NaCl solutions and seawater. Differential electrochemical mass spectrometry demonstrates the absence of halogen in the product stream, and chemical analysis shows the production of only minute amounts of hypohalous acid.
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54
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Pasquini C, Zaharieva I, González-Flores D, Chernev P, Mohammadi MR, Guidoni L, Smith RDL, Dau H. H/D Isotope Effects Reveal Factors Controlling Catalytic Activity in Co-Based Oxides for Water Oxidation. J Am Chem Soc 2019; 141:2938-2948. [PMID: 30650965 DOI: 10.1021/jacs.8b10002] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Understanding the mechanism for electrochemical water oxidation is important for the development of more efficient catalysts for artificial photosynthesis. A basic step is the proton-coupled electron transfer, which enables accumulation of oxidizing equivalents without buildup of a charge. We find that substituting deuterium for hydrogen resulted in an 87% decrease in the catalytic activity for water oxidation on Co-based amorphous-oxide catalysts at neutral pH, while 16O-to-18O substitution lead to a 10% decrease. In situ visible and quasi-in situ X-ray absorption spectroscopy reveal that the hydrogen-to-deuterium isotopic substitution induces an equilibrium isotope effect that shifts the oxidation potentials positively by approximately 60 mV for the proton coupled CoII/III and CoIII/IV electron transfer processes. Time-resolved spectroelectrochemical measurements indicate the absence of a kinetic isotope effect, implying that the precatalytic proton-coupled electron transfer happens through a stepwise mechanism in which electron transfer is rate-determining. An observed correlation between Co oxidation states and catalytic current for both isotopic conditions indicates that the applied potential has no direct effect on the catalytic rate, which instead depends exponentially on the average Co oxidation state. These combined results provide evidence that neither proton nor electron transfer is involved in the catalytic rate-determining step. We propose a mechanism with an active species composed by two adjacent CoIV atoms and a rate-determining step that involves oxygen-oxygen bond formation and compare it with models proposed in the literature.
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Affiliation(s)
- Chiara Pasquini
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Ivelina Zaharieva
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Diego González-Flores
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Petko Chernev
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
| | - Mohammad Reza Mohammadi
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany.,Department of Physics , University of Sistan and Baluchestan , Zahedan , 98167-45845 , Iran
| | - Leonardo Guidoni
- Dipartimento di Scienze Fisiche e Chimiche , Università degli studi dell'Aquila,Via Vetoio (Coppito) , 67100 L'Aquila , Italy
| | - Rodney D L Smith
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany.,Department of Chemistry , University of Waterloo , 200 University Avenue W , N2L 3G1 Waterloo , ON , Canada
| | - Holger Dau
- Department of Physics , Freie Universität Berlin , Arnimallee 14 , 14195 Berlin , Germany
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55
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Villalobos J, González-Flores D, Klingan K, Chernev P, Kubella P, Urcuyo R, Pasquini C, Mohammadi MR, Smith RDL, Montero ML, Dau H. Structural and functional role of anions in electrochemical water oxidation probed by arsenate incorporation into cobalt-oxide materials. Phys Chem Chem Phys 2019; 21:12485-12493. [DOI: 10.1039/c9cp01754b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Arsenate ions are incorporated in amorphous cobalt oxide catalysts at the periphery of the lattice or substituting cobalt ions.
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Affiliation(s)
- Javier Villalobos
- Centro de Electroquímica y Energía Química (CELEQ) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
| | - Diego González-Flores
- Centro de Electroquímica y Energía Química (CELEQ) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
- Department of Physics
| | | | - Petko Chernev
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Paul Kubella
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Roberto Urcuyo
- Centro de Electroquímica y Energía Química (CELEQ) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
| | - Chiara Pasquini
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | | | | | - Mavis L. Montero
- Centro de Investigación en Ciencia e Ingeniería de Materiales (CICIMA) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
| | - Holger Dau
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
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Enman LJ, Stevens MB, Dahan MH, Nellist MR, Toroker MC, Boettcher SW. Operando X‐Ray Absorption Spectroscopy Shows Iron Oxidation Is Concurrent with Oxygen Evolution in Cobalt–Iron (Oxy)hydroxide Electrocatalysts. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808818] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lisa J. Enman
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Michaela Burke Stevens
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Meir Haim Dahan
- Department of Materials Science & Engineering and The Nancy & Stephen Grand Technion Energy Program Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Michael R. Nellist
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Maytal Caspary Toroker
- Department of Materials Science & Engineering and The Nancy & Stephen Grand Technion Energy Program Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Shannon W. Boettcher
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
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57
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Enman LJ, Stevens MB, Dahan MH, Nellist MR, Toroker MC, Boettcher SW. Operando X‐Ray Absorption Spectroscopy Shows Iron Oxidation Is Concurrent with Oxygen Evolution in Cobalt–Iron (Oxy)hydroxide Electrocatalysts. Angew Chem Int Ed Engl 2018; 57:12840-12844. [DOI: 10.1002/anie.201808818] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Lisa J. Enman
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Michaela Burke Stevens
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Meir Haim Dahan
- Department of Materials Science & Engineering and The Nancy & Stephen Grand Technion Energy Program Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Michael R. Nellist
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
| | - Maytal Caspary Toroker
- Department of Materials Science & Engineering and The Nancy & Stephen Grand Technion Energy Program Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Shannon W. Boettcher
- Department of Chemistry & Biochemistry and the Materials Science Institute University of Oregon Eugene OR 97403 USA
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Sabri M, King HJ, Gummow RJ, Malherbe F, Hocking RK. The Oxidation of Peroxide by Disordered Metal Oxides: A Measurement of Thermodynamic Stability “By Proxy”. Chempluschem 2018; 83:620-629. [DOI: 10.1002/cplu.201800150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 04/25/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Mayada Sabri
- Department of Chemistry and Biotechnology, Faculty of Science Engineering and Technology; Swinburne University of Technology; Hawthorn, Melbourne VIC 3122 Australia
- College of Science, Technology, and Engineering; James Cook University; Townsville QLD 4811 Australia
- University of Baghdad; College of Education for Pure Science; Ibn Al-Haitham Iraq
| | - Hannah J. King
- Department of Chemistry and Biotechnology, Faculty of Science Engineering and Technology; Swinburne University of Technology; Hawthorn, Melbourne VIC 3122 Australia
- College of Science, Technology, and Engineering; James Cook University; Townsville QLD 4811 Australia
| | - Rosalind J. Gummow
- College of Science, Technology, and Engineering; James Cook University; Townsville QLD 4811 Australia
| | - François Malherbe
- Department of Chemistry and Biotechnology, Faculty of Science Engineering and Technology; Swinburne University of Technology; Hawthorn, Melbourne VIC 3122 Australia
| | - Rosalie K. Hocking
- Department of Chemistry and Biotechnology, Faculty of Science Engineering and Technology; Swinburne University of Technology; Hawthorn, Melbourne VIC 3122 Australia
- College of Science, Technology, and Engineering; James Cook University; Townsville QLD 4811 Australia
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Sakimoto KK, Kornienko N, Cestellos-Blanco S, Lim J, Liu C, Yang P. Physical Biology of the Materials–Microorganism Interface. J Am Chem Soc 2018; 140:1978-1985. [DOI: 10.1021/jacs.7b11135] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kelsey K. Sakimoto
- Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- Department
of Systems Biology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Nikolay Kornienko
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Stefano Cestellos-Blanco
- Department
of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Jongwoo Lim
- Department
of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Chong Liu
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Peidong Yang
- Department
of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Kavli
Energy NanoSciences Institute, University of California, Berkeley, and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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