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Marelli E, Gazquez J, Poghosyan E, Müller E, Gawryluk DJ, Pomjakushina E, Sheptyakov D, Piamonteze C, Aegerter D, Schmidt TJ, Medarde M, Fabbri E. Correlation between Oxygen Vacancies and Oxygen Evolution Reaction Activity for a Model Electrode: PrBaCo
2
O
5+
δ
. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Elena Marelli
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
| | - Jaume Gazquez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) Campus UAB, Bellaterra 08193 Barcelona Spain
| | - Emiliya Poghosyan
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
| | - Elisabeth Müller
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
| | | | | | - Denis Sheptyakov
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
| | - Cinthia Piamonteze
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
| | - Dino Aegerter
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
| | - Thomas J. Schmidt
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
- Laboratory of Physical Chemistry ETH Zurich 8093 Zurich Switzerland
| | - Marisa Medarde
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
| | - Emiliana Fabbri
- Paul Scherrer Institute Forschungsstrasse 111 5232 Villigen PSI Switzerland
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Marelli E, Gazquez J, Poghosyan E, Müller E, Gawryluk DJ, Pomjakushina E, Sheptyakov D, Piamonteze C, Aegerter D, Schmidt TJ, Medarde M, Fabbri E. Correlation between Oxygen Vacancies and Oxygen Evolution Reaction Activity for a Model Electrode: PrBaCo 2 O 5+δ. Angew Chem Int Ed Engl 2021; 60:14609-14619. [PMID: 33826206 DOI: 10.1002/anie.202103151] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 11/12/2022]
Abstract
The role of the perovskite lattice oxygen in the oxygen evolution reaction (OER) is systematically studied in the PrBaCo2 O5+δ family. The reduced number of physical/chemical variables combined with in-depth characterizations such as neutron dif-fraction, O K-edge X-ray absorption spectroscopy (XAS), electron energy loss spectroscopy (EELS), magnetization and scanning transmission electron microscopy (STEM) studies, helps investigating the complex correlation between OER activity and a single perovskite property, such as the oxygen content. Larger amount of oxygen vacancies appears to facilitate the OER, possibly contributing to the mechanism involving the oxidation of lattice oxygen, i.e., the lattice oxygen evolution reaction (LOER). Furthermore, not only the number of vacancies but also their local arrangement in the perovskite lattice influences the OER activity, with a clear drop for the more stable, ordered stoichiometry.
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Affiliation(s)
- Elena Marelli
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Jaume Gazquez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Emiliya Poghosyan
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Elisabeth Müller
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Dariusz J Gawryluk
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | | | - Denis Sheptyakov
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Cinthia Piamonteze
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Dino Aegerter
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Thomas J Schmidt
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland.,Laboratory of Physical Chemistry, ETH Zurich, 8093, Zurich, Switzerland
| | - Marisa Medarde
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Emiliana Fabbri
- Paul Scherrer Institute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
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A Review on the Structural Studies of Batteries and Host Materials by X-Ray Absorption Spectroscopy. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/938625] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This review highlights the use of the X-ray absorption spectroscopy (XAS) as a local structural tool for selected atoms in several host materials. The main characteristics of XAS to be element-sensitive and its applicability to all states of matter, including crystalline solids and amorphous and liquid states, permit an in-depth study of the structural properties of a large variety of materials. This includes intercalation materials where a host structure can accommodate guest species. Host guest equilibria are at the basis of a large variety of technological applications; in particular they have been used for energy storage, ion-exchange membranes, electrochromism, and analytical sensing. A selection of XAS experiments conducted in the field of batteries, mainly on cathodes, and applications in the field of metal hexacyanoferrates and double layered hydroxides are outlined.
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