1
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Song KT, Zagalskaya A, Schott CM, Schneider PM, Garlyyev B, Alexandrov V, Bandarenka AS. Influence of Alkali Metal Cations on the Oxygen Reduction Activity of Pt 5Y and Pt 5Gd Alloys. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:4969-4977. [PMID: 38567375 PMCID: PMC10983829 DOI: 10.1021/acs.jpcc.4c00531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024]
Abstract
Electrolyte species can significantly influence the electrocatalytic performance. In this work, we investigate the impact of alkali metal cations on the oxygen reduction reaction (ORR) on active Pt5Gd and Pt5Y polycrystalline electrodes. Due to the strain effects, Pt alloys exhibit a higher kinetic current density of ORR than pure Pt electrodes in acidic media. In alkaline solutions, the kinetic current density of ORR for Pt alloys decreases linearly with the decreasing hydration energy in the order of Li+ > Na+ > K+ > Rb+ > Cs+, whereas Pt shows the opposite trend. To gain further insights into these experimental results, we conduct complementary density functional theory calculations considering the effects of both electrode surface strain and electrolyte chemistry. The computational results reveal that the different trends in the ORR activity in alkaline media can be explained by the change in the adsorption energy of reaction intermediates with applied surface strain in the presence of alkali metal cations. Our findings provide important insights into the effects of the electrolyte and the strain conditions on the electrocatalytic performance and thus offer valuable guidelines for optimizing Pt-based electrocatalysts.
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Affiliation(s)
- Kun-Ting Song
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Alexandra Zagalskaya
- Department
of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
- Quantum
Simulations Group, Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Christian M. Schott
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Peter M. Schneider
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Batyr Garlyyev
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Vitaly Alexandrov
- Department
of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
- Nebraska
Center for Materials and Nanoscience, University
of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Aliaksandr S. Bandarenka
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
- Catalysis
Research Center TUM, Ernst-Otto-Fischer-Straße 1, Garching
bei München 85748, Germany
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2
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Xiang Q, Yan R, Gao G, Wang S. Electrooxidation of Methanol on PANI‐CeO
2
@Pt Catalysts. ChemistrySelect 2022. [DOI: 10.1002/slct.202203391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Qun Xiang
- Institute of Physical Science and Information Technology Anhui University Hefei Anhui, 230601 China
| | - Ruiwen Yan
- Institute of Physical Science and Information Technology Anhui University Hefei Anhui, 230601 China
| | - Guiqi Gao
- Institute of Physical Science and Information Technology Anhui University Hefei Anhui, 230601 China
| | - Shuang Wang
- Institute of Physical Science and Information Technology Anhui University Hefei Anhui, 230601 China
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3
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Kluge RM, Psaltis E, Haid RW, Hou S, Schmidt TO, Schneider O, Garlyyev B, Calle-Vallejo F, Bandarenka AS. Revealing the Nature of Active Sites on Pt-Gd and Pt-Pr Alloys during the Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:19604-19613. [PMID: 35442013 DOI: 10.1021/acsami.2c03604] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
For large-scale applications of hydrogen fuel cells, the sluggish kinetics of the oxygen reduction reaction (ORR) have to be overcome. So far, only platinum (Pt)-group catalysts have shown adequate performance and stability. A well-known approach to increase the efficiency and decrease the Pt loading is to alloy Pt with other metals. Still, for catalyst optimization, the nature of the active sites is crucial. In this work, electrochemical scanning tunneling microscopy (EC-STM) is used to probe the ORR active areas on Pt5Gd and Pt5Pr in acidic media under reaction conditions. The technique detects localized fluctuations in the EC-STM signal, which indicates differences in the local activity. The in situ experiments, supported by coordination-activity plots based on density functional theory calculations, show that the compressed Pt-lanthanide (111) terraces contribute the most to the overall activity. Sites with higher coordination, as found at the bottom of step edges or concavities, remain relatively inactive. Sites of lower coordination, as found near the top of step edges, show higher activity, presumably due to an interplay of strain and steric hindrance effects. These findings should be vital in designing nanostructured Pt-lanthanide electrocatalysts.
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Affiliation(s)
- Regina M Kluge
- Physik-Department ECS, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Eleftherios Psaltis
- Physik-Department ECS, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Richard W Haid
- Physik-Department ECS, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Shujin Hou
- Physik-Department ECS, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
- Catalysis Research Center TUM, Ernst-Otto-Fischer-Straße 1, 85748 Garching, Germany
| | - Thorsten O Schmidt
- Physik-Department ECS, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Oliver Schneider
- Institut für Informatik VI, Technische Universität München, Schleißheimerstraße 90a, 85748 Garching, Germany
| | - Batyr Garlyyev
- Physik-Department ECS, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Federico Calle-Vallejo
- Department of Materials Science and Chemical Physics & Institute of Theoretical and Computational Chemistry (IQTCUB), University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Aliaksandr S Bandarenka
- Physik-Department ECS, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
- Catalysis Research Center TUM, Ernst-Otto-Fischer-Straße 1, 85748 Garching, Germany
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4
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Zhang S, Saji SE, Yin Z, Zhang H, Du Y, Yan CH. Rare-Earth Incorporated Alloy Catalysts: Synthesis, Properties, and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005988. [PMID: 33709501 DOI: 10.1002/adma.202005988] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/25/2020] [Indexed: 06/12/2023]
Abstract
To improve the performance of metallic catalysts, alloying provides an efficient methodology to design state-of-the-art materials. As emerging functional materials, rare-earth metal compounds can integrate the unique orbital structure and catalytic behavior of rare earth elements into metallic materials. Such rare-earth containing alloy catalysts proffer an opportunity to tailor electronic properties, tune charged carrier transport, and synergize surface reactivity, which are expected to significantly improve the performance and stability of catalysis. Despite its significance, there are only few reviews on rare earth containing alloys or related topics. This review summarizes the composition, synthesis, and applications of rare earth containing alloys in the field of catalysis. Subsequent to comprehensively summarizing and constructively discussing the existing work, the challenges and possibilities of future research on rare-earth metal compound materials are evaluated.
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Affiliation(s)
- Shuai Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
| | - Sandra Elizabeth Saji
- Research School of Chemistry, Australian National University, Canberra, 2601, Australia
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, 2601, Australia
| | - Hongbo Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
| | - Chun-Hua Yan
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
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5
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Hirata N, Katsura Y, Gunji H, Tona M, Tsukamoto K, Eguchi M, Ando T, Nakajima A. Platinum nanocluster catalysts supported on Marimo carbon via scalable dry deposition synthesis. RSC Adv 2021; 11:39216-39222. [PMID: 35492459 PMCID: PMC9044432 DOI: 10.1039/d1ra07717a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 12/01/2021] [Indexed: 01/19/2023] Open
Abstract
The development of efficient fuel cells greatly promotes reducing the consumption of fossil energy, and it is crucial to enhance the platinum (Pt) catalytic activity by optimizing both the nanoparticle size and support effect.
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Affiliation(s)
- Naoyuki Hirata
- Ayabo Co., Ltd., 1 Hosogute, Fukukama-cho, Anjo, Aichi 446-0052, Japan
| | - Yui Katsura
- College of Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Hiroyuki Gunji
- College of Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Masahide Tona
- Ayabo Co., Ltd., 1 Hosogute, Fukukama-cho, Anjo, Aichi 446-0052, Japan
| | - Keizo Tsukamoto
- Ayabo Co., Ltd., 1 Hosogute, Fukukama-cho, Anjo, Aichi 446-0052, Japan
| | - Mika Eguchi
- College of Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Toshihiro Ando
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
| | - Atsushi Nakajima
- Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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6
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7
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The enhanced activity of Pt-Ce nanoalloy for oxygen electroreduction. Sci Rep 2020; 10:14837. [PMID: 32908219 PMCID: PMC7481784 DOI: 10.1038/s41598-020-71965-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 08/19/2020] [Indexed: 11/21/2022] Open
Abstract
The widespread use of low-temperature polymer electrolyte membrane fuel cells for clean energy source require significant reductions in the amount of expensive electrocatalyst Pt for the oxygen reduction reaction (ORR). Pt based binary alloys are promising materials for more active and stable electrocatalysts. In this paper, we studied Pt–Ce nanoalloy, which was prepared by hydrogen reduction techniques as ORR electrocatalysts. Among all PtCe alloy catalysts, the PtCe/C-800 ℃ shows superior ORR activity, stability and durability compared to commercial Pt/C. The results presented in this paper will provide the future perspectives to research based on Pt-RE (RE = Ce, Dy, Gd, Er, Sm, and La) alloy as an novel electrocatalyst for various electrocatalytic reactions.
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8
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Fichtner J, Watzele S, Garlyyev B, Kluge RM, Haimerl F, El-Sayed HA, Li WJ, Maillard FM, Dubau L, Chattot R, Michalička J, Macak JM, Wang W, Wang D, Gigl T, Hugenschmidt C, Bandarenka AS. Tailoring the Oxygen Reduction Activity of Pt Nanoparticles through Surface Defects: A Simple Top-Down Approach. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04974] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Johannes Fichtner
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
| | - Sebastian Watzele
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
| | - Batyr Garlyyev
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
| | - Regina M. Kluge
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
| | - Felix Haimerl
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
| | - Hany A. El-Sayed
- Chair of Technical Electrochemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Wei-Jin Li
- Chair of Inorganic and Metal-Organic Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Frédéric M. Maillard
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - Laetitia Dubau
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - Raphaël Chattot
- ESRF-The European Synchrotron, ID 31 Beamline, 38043 Grenoble, France
| | - Jan Michalička
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Jan M. Macak
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Wu Wang
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Joint Research Laboratory Nanomaterials, Technische Universität Darmstadt, Jovanka-Bontschits-Straße 2, 64287 Darmstadt, Germany
| | - Di Wang
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Karlsruhe Nano Micro Facility, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Thomas Gigl
- FRM II at Heinz Maier-Leibnitz Zentrum (MLZ), Technical University of Munich, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Christoph Hugenschmidt
- FRM II at Heinz Maier-Leibnitz Zentrum (MLZ), Technical University of Munich, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Aliaksandr S. Bandarenka
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Straße 1, 85748 Garching, Germany
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Straße 1, 85748 Garching, Germany
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9
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Kim C, Dionigi F, Beermann V, Wang X, Möller T, Strasser P. Alloy Nanocatalysts for the Electrochemical Oxygen Reduction (ORR) and the Direct Electrochemical Carbon Dioxide Reduction Reaction (CO 2 RR). ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805617. [PMID: 30570788 DOI: 10.1002/adma.201805617] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/18/2018] [Indexed: 06/09/2023]
Abstract
In the face of the global energy challenge and progressing global climate change, renewable energy systems and components, such as fuel cells and electrolyzers, which close the energetic oxygen and carbon cycles, have become a technology development priority. The electrochemical oxygen reduction reaction (ORR) and the direct electrochemical carbon dioxide reduction reaction (CO2 RR) are important electrocatalytic processes that proceed at gas diffusion electrodes of hydrogen fuel cells and CO2 electrolyzers, respectively. However, their low catalytic activity (voltage efficiency), limited long-term stability, and moderate product selectivity (related to their Faradaic efficiency) have remained challenges. To address these, suitable catalysts are required. This review addresses the current state of research on Pt-based and Cu-based nanoalloy electrocatalysts for ORR and CO2 RR, respectively, and critically compares and contrasts key performance parameters such as activity, selectivity, and durability. In particular, Pt nanoparticles alloyed with transition metals, post-transition metals and lanthanides, are discussed, as well as the material characterization and their performance for the ORR. Then, bimetallic Cu nanoalloy catalysts are reviewed and organized according to their main reaction product generated by the second metal. This review concludes with a perspective on nanoalloy catalysts for the ORR and the CO2 RR, and proposes future research directions.
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Affiliation(s)
- Cheonghee Kim
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Fabio Dionigi
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Vera Beermann
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Xingli Wang
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Tim Möller
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Peter Strasser
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
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10
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Garlyyev B, Fichtner J, Piqué O, Schneider O, Bandarenka AS, Calle-Vallejo F. Revealing the nature of active sites in electrocatalysis. Chem Sci 2019; 10:8060-8075. [PMID: 31857876 PMCID: PMC6844223 DOI: 10.1039/c9sc02654a] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 07/22/2019] [Indexed: 12/17/2022] Open
Abstract
Heterogeneous electrocatalysis plays a central role in the development of sustainable, carbon-neutral pathways for energy provision and the production of various chemicals. It determines the overall efficiency of electrochemical devices that involve catalysis at the electrode/electrolyte interface. In this perspective, we discuss key aspects for the identification of active centers at the surface of electrocatalysts and important factors that influence them. The role of the surface structure, nanoparticle shape/size and the electrolyte composition in the resulting catalytic performance is of particular interest in this work. We highlight challenges that from our point of view need to be tackled, and provide guidelines for the design of "real life" electrocatalysts for renewable energy provision systems as well as for the production of industrially important compounds.
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Affiliation(s)
- Batyr Garlyyev
- Physics of Energy Conversion and Storage , Technical University of Munich , James-Franck-Straße 1 , 85748 Garching , Germany .
| | - Johannes Fichtner
- Physics of Energy Conversion and Storage , Technical University of Munich , James-Franck-Straße 1 , 85748 Garching , Germany .
| | - Oriol Piqué
- Departament de Ciència de Materials i Química Fisica , Institut de Química Teòrica i Computacional (IQTCUB) , Universitat de Barcelona , Martí i Franquès 1 , 08028 Barcelona , Spain .
| | - Oliver Schneider
- Electrochemical Research Group , Technische Universität München , Schleißheimerstraße 90a , 85748 Garching , Germany
| | - Aliaksandr S Bandarenka
- Physics of Energy Conversion and Storage , Technical University of Munich , James-Franck-Straße 1 , 85748 Garching , Germany . .,Catalysis Research Center , TUM , Ernst-Otto-Fischer-Straße 1 , 85748 Garching , Germany
| | - Federico Calle-Vallejo
- Departament de Ciència de Materials i Química Fisica , Institut de Química Teòrica i Computacional (IQTCUB) , Universitat de Barcelona , Martí i Franquès 1 , 08028 Barcelona , Spain .
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11
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Garlyyev B, Kratzl K, Rück M, Michalička J, Fichtner J, Macak JM, Kratky T, Günther S, Cokoja M, Bandarenka AS, Gagliardi A, Fischer RA. Optimierung der Größe von Platin‐Nanopartikeln für eine erhöhte Massenaktivität der elektrochemischen Sauerstoffreduktion. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904492] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Batyr Garlyyev
- Lehrstuhl für Physik der Energieumwandlung und -speicherungTechnische Universität München James-Franck-Straße 1 85748 Garching Deutschland
| | - Kathrin Kratzl
- KatalysezentrumTechnische Universität München Ernst-Otto-Fischer-Straße 1 85748 Garching Deutschland
| | - Marlon Rück
- Fakultät für Elektrotechnik und InformationstechnikTechnische Universität München 80333 Munich Deutschland
| | - Jan Michalička
- Central European Institute of TechnologyBrno University of Technology Purkynova 123 612 00 Brno Tschechische Republik
| | - Johannes Fichtner
- Lehrstuhl für Physik der Energieumwandlung und -speicherungTechnische Universität München James-Franck-Straße 1 85748 Garching Deutschland
| | - Jan M. Macak
- Central European Institute of TechnologyBrno University of Technology Purkynova 123 612 00 Brno Tschechische Republik
| | - Tim Kratky
- KatalysezentrumTechnische Universität München Ernst-Otto-Fischer-Straße 1 85748 Garching Deutschland
| | - Sebastian Günther
- KatalysezentrumTechnische Universität München Ernst-Otto-Fischer-Straße 1 85748 Garching Deutschland
| | - Mirza Cokoja
- KatalysezentrumTechnische Universität München Ernst-Otto-Fischer-Straße 1 85748 Garching Deutschland
| | - Aliaksandr S. Bandarenka
- Lehrstuhl für Physik der Energieumwandlung und -speicherungTechnische Universität München James-Franck-Straße 1 85748 Garching Deutschland
- KatalysezentrumTechnische Universität München Ernst-Otto-Fischer-Straße 1 85748 Garching Deutschland
| | - Alessio Gagliardi
- Fakultät für Elektrotechnik und InformationstechnikTechnische Universität München 80333 Munich Deutschland
| | - Roland A. Fischer
- KatalysezentrumTechnische Universität München Ernst-Otto-Fischer-Straße 1 85748 Garching Deutschland
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12
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Garlyyev B, Kratzl K, Rück M, Michalička J, Fichtner J, Macak JM, Kratky T, Günther S, Cokoja M, Bandarenka AS, Gagliardi A, Fischer RA. Optimizing the Size of Platinum Nanoparticles for Enhanced Mass Activity in the Electrochemical Oxygen Reduction Reaction. Angew Chem Int Ed Engl 2019; 58:9596-9600. [PMID: 31050857 DOI: 10.1002/anie.201904492] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/02/2019] [Indexed: 11/10/2022]
Abstract
High oxygen reduction (ORR) activity has been for many years considered as the key to many energy applications. Herein, by combining theory and experiment we prepare Pt nanoparticles with optimal size for the efficient ORR in proton-exchange-membrane fuel cells. Optimal nanoparticle sizes are predicted near 1, 2, and 3 nm by computational screening. To corroborate our computational results, we have addressed the challenge of approximately 1 nm sized Pt nanoparticle synthesis with a metal-organic framework (MOF) template approach. The electrocatalyst was characterized by HR-TEM, XPS, and its ORR activity was measured using a rotating disk electrode setup. The observed mass activities (0.87±0.14 A mgPt -1 ) are close to the computational prediction (0.99 A mgPt -1 ). We report the highest to date mass activity among pure Pt catalysts for the ORR within similar size range. The specific and mass activities are twice as high as the Tanaka commercial Pt/C catalysis.
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Affiliation(s)
- Batyr Garlyyev
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Strasse 1, 85748, Garching, Germany
| | - Kathrin Kratzl
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
| | - Marlon Rück
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333, Munich, Germany
| | - Jan Michalička
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00, Brno, Czech Republic
| | - Johannes Fichtner
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Strasse 1, 85748, Garching, Germany
| | - Jan M Macak
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00, Brno, Czech Republic
| | - Tim Kratky
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
| | - Sebastian Günther
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
| | - Mirza Cokoja
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
| | - Aliaksandr S Bandarenka
- Physics of Energy Conversion and Storage, Technical University of Munich, James-Franck-Strasse 1, 85748, Garching, Germany.,Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
| | - Alessio Gagliardi
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333, Munich, Germany
| | - Roland A Fischer
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
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13
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Fichtner J, Garlyyev B, Watzele S, El-Sayed HA, Schwämmlein JN, Li WJ, Maillard FM, Dubau L, Michalička J, Macak JM, Holleitner A, Bandarenka AS. Top-Down Synthesis of Nanostructured Platinum-Lanthanide Alloy Oxygen Reduction Reaction Catalysts: Pt xPr/C as an Example. ACS APPLIED MATERIALS & INTERFACES 2019; 11:5129-5135. [PMID: 30633493 DOI: 10.1021/acsami.8b20174] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The oxygen reduction reaction (ORR) is of great interest for future sustainable energy conversion and storage, especially concerning fuel cell applications. The preparation of active, affordable, and scalable electrocatalysts and their application in fuel cell engines of hydrogen cars is a prominent step toward the reduction of air pollution, especially in urban areas. Alloying nanostructured Pt with lanthanides is a promising approach to enhance its catalytic ORR activity, whereby the development of a simple synthetic route turned out to be a nontrivial endeavor. Herein, for the first time, we present a successful single-step, scalable top-down synthetic route for Pt-lanthanide alloy nanoparticles, as witnessed by the example of Pr-alloyed Pt nanoparticles. The catalyst was characterized by high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and photoelectron spectroscopy, and its electrocatalytic oxygen reduction activity was investigated using a rotating disk electrode technique. Pt xPr/C showed ∼3.5 times higher [1.96 mA/cm2Pt, 0.9 V vs reversible hydrogen electrode (RHE)] specific activity and ∼1.7 times higher (0.7 A/mgPt, 0.9 V vs RHE) mass activity compared to commercial Pt/C catalysts. On the basis of previous findings and characterization of the Pt xPr/C catalyst, the activity improvement over commercial Pt/C originates from a lattice strain introduced by the alloying process.
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Affiliation(s)
- Johannes Fichtner
- Physics of Energy Conversion and Storage , Technical University of Munich , James-Franck-Straße 1 , 85748 Garching , Germany
| | - Batyr Garlyyev
- Physics of Energy Conversion and Storage , Technical University of Munich , James-Franck-Straße 1 , 85748 Garching , Germany
| | - Sebastian Watzele
- Physics of Energy Conversion and Storage , Technical University of Munich , James-Franck-Straße 1 , 85748 Garching , Germany
- Nanosystems Initiative Munich (NIM) , Schellingstraße 4 , 80799 Munich , Germany
| | | | | | | | - Frédéric M Maillard
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble , France
| | - Laetitia Dubau
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble , France
| | - Jan Michalička
- Central European Institute of Technology , Brno University of Technology , Purkynova 123 , 612 00 Brno , Czech Republic
| | - Jan M Macak
- Central European Institute of Technology , Brno University of Technology , Purkynova 123 , 612 00 Brno , Czech Republic
| | - Alexander Holleitner
- Walter Schottky Institute , Technical University of Munich , Am Coulombwall 4a , 85748 Garching , Germany
| | - Aliaksandr S Bandarenka
- Physics of Energy Conversion and Storage , Technical University of Munich , James-Franck-Straße 1 , 85748 Garching , Germany
- Nanosystems Initiative Munich (NIM) , Schellingstraße 4 , 80799 Munich , Germany
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Liu H, Qin J, Zhao S, Gao Z, Fu Q, Song Y. Two-dimensional circular platinum nanodendrites toward efficient oxygen reduction reaction and methanol oxidation reaction. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2018.11.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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