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Guggenberger P, Priamushko T, Patil P, Florek J, Garstenauer D, Mautner A, Won Shin J, Ryoo R, Pichler CM, Kleitz F. Low-Temperature controlled synthesis of nanocast mixed metal oxide spinels for enhanced OER activity. J Colloid Interface Sci 2024; 661:574-587. [PMID: 38308896 DOI: 10.1016/j.jcis.2024.01.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/21/2023] [Accepted: 01/08/2024] [Indexed: 02/05/2024]
Abstract
The controlled cation substitution is an effective strategy for optimizing the density of states and enhancing the electrocatalytic activity of transition metal oxide catalysts for water splitting. However, achieving tailored mesoporosity while maintaining elemental homogeneity and phase purity remains a significant challenge, especially when aiming for complex multi-metal oxides. In this study, we utilized a one-step impregnation nanocasting method for synthesizing mesoporous Mn-, Fe-, and Ni-substituted cobalt spinel oxide (Mn0.1Fe0.1Ni0.3Co2.5O4, MFNCO) and demonstrate the benefits of low-temperature calcination within a semi-sealed container at 150-200 °C. The comprehensive discussion of calcination temperature effects on porosity, particle size, surface chemistry and catalytic performance for the alkaline oxygen evolution reaction (OER) highlights the importance of humidity, which was modulated by a pre-drying step. The catalyst calcined at 170 °C exhibited the lowest overpotential (335 mV at 10 mA cm-2), highest current density (433 mA cm-2 at 1.7 V vs. RHE, reversible hydrogen electrode) and further displayed excellent stability over 22 h (at 10 mA cm-2). Furthermore, we successfully adapted this method to utilize cheap, commercially available silica gel as a hard template, yielding comparable OER performance. Our results represent a significant progress in the cost-efficient large-scale preparation of complex multi-metal oxides for catalytic applications.
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Affiliation(s)
- Patrick Guggenberger
- Department of Functional Materials and Catalysis, University of Vienna, Währinger Straße 42, 1090 Vienna, Austria; Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Währinger Straße 42, 1090 Vienna, Austria
| | - Tatiana Priamushko
- Department of Functional Materials and Catalysis, University of Vienna, Währinger Straße 42, 1090 Vienna, Austria; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstraße 1, 91058 Erlangen, Germany
| | - Prathamesh Patil
- CEST Centre of Electrochemical and Surface Technology, Viktor Kaplan-Straße 2, 2700 Wiener Neustadt, Austria
| | - Justyna Florek
- Department of Functional Materials and Catalysis, University of Vienna, Währinger Straße 42, 1090 Vienna, Austria
| | - Daniel Garstenauer
- Department of Functional Materials and Catalysis, University of Vienna, Währinger Straße 42, 1090 Vienna, Austria; Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Währinger Straße 42, 1090 Vienna, Austria
| | - Andreas Mautner
- Department of Materials Chemistry, University of Vienna, Währinger Straße 42, 1090 Vienna, Austria
| | - Jae Won Shin
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), 291 Daehak-ro, Yuseong-gu, 34141 Daejeon, Republic of Korea
| | - Ryong Ryoo
- Department of Energy Engineering, Korea Institute of Energy Technology (KENTECH), Naju, 58330 Jeonnam, Republic of Korea
| | - Christian M Pichler
- CEST Centre of Electrochemical and Surface Technology, Viktor Kaplan-Straße 2, 2700 Wiener Neustadt, Austria; Institute of Applied Physics, Vienna University of Technology, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria
| | - Freddy Kleitz
- Department of Functional Materials and Catalysis, University of Vienna, Währinger Straße 42, 1090 Vienna, Austria.
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2
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Hegazy MBZ, Zander J, Weiss M, Simon C, Gerschel P, Sanden SA, Smialkowski M, Tetzlaff D, Kull T, Marschall R, Apfel UP. FeNi 2 S 4 -A Potent Bifunctional Efficient Electrocatalyst for the Overall Electrochemical Water Splitting in Alkaline Electrolyte. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2311627. [PMID: 38462958 DOI: 10.1002/smll.202311627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/17/2024] [Indexed: 03/12/2024]
Abstract
For a carbon-neutral society, the production of hydrogen as a clean fuel through water electrolysis is currently of great interest. Since water electrolysis is a laborious energetic reaction, it requires high energy to maintain efficient and sustainable production of hydrogen. Catalytic electrodes can reduce the required energy and minimize production costs. In this context, herein, a bifunctional electrocatalyst made from iron nickel sulfide (FeNi2 S4 [FNS]) for the overall electrochemical water splitting is introduced. Compared to Fe2 NiO4 (FNO), FNS shows a significantly improved performance toward both OER and HER in alkaline electrolytes. At the same time, the FNS electrode exhibits high activity toward the overall electrochemical water splitting, achieving a current density of 10 mA cm-2 at 1.63 V, which is favourable compared to previously published nonprecious electrocatalysts for overall water splitting. The long-term chronopotentiometry test reveals an activation followed by a subsequent stable overall cell potential at around 2.12 V for 20 h at 100 mA cm-2 .
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Affiliation(s)
- Mohamed Barakat Zakaria Hegazy
- Inorganic Chemistry I, Ruhr-University Bochum, 44801, Bochum, Germany
- Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Judith Zander
- Department of Chemistry, University of Bayreuth, 95447, Bayreuth, Germany
- Bavarian Center for Battery Technology (BayBatt), University of Bayreuth, 95447, Bayreuth, Germany
| | - Morten Weiss
- Department of Chemistry, University of Bayreuth, 95447, Bayreuth, Germany
| | - Christopher Simon
- Department of Chemistry, University of Bayreuth, 95447, Bayreuth, Germany
| | - Philipp Gerschel
- Inorganic Chemistry I, Ruhr-University Bochum, 44801, Bochum, Germany
| | | | - Mathias Smialkowski
- Inorganic Chemistry I, Ruhr-University Bochum, 44801, Bochum, Germany
- Fraunhofer Institute for Environmental, Safety, and Energy Technology, 46047, Oberhausen, Germany
| | - David Tetzlaff
- Inorganic Chemistry I, Ruhr-University Bochum, 44801, Bochum, Germany
- Fraunhofer Institute for Environmental, Safety, and Energy Technology, 46047, Oberhausen, Germany
| | - Tobias Kull
- Inorganic Chemistry I, Ruhr-University Bochum, 44801, Bochum, Germany
| | - Roland Marschall
- Department of Chemistry, University of Bayreuth, 95447, Bayreuth, Germany
- Bavarian Center for Battery Technology (BayBatt), University of Bayreuth, 95447, Bayreuth, Germany
| | - Ulf-Peter Apfel
- Inorganic Chemistry I, Ruhr-University Bochum, 44801, Bochum, Germany
- Department of Chemistry, University of Bayreuth, 95447, Bayreuth, Germany
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3
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Einert M, Waheed A, Lauterbach S, Mellin M, Rohnke M, Wagner LQ, Gallenberger J, Tian C, Smarsly BM, Jaegermann W, Hess F, Schlaad H, Hofmann JP. Sol-Gel-Derived Ordered Mesoporous High Entropy Spinel Ferrites and Assessment of Their Photoelectrochemical and Electrocatalytic Water Splitting Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205412. [PMID: 36653934 DOI: 10.1002/smll.202205412] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 12/19/2022] [Indexed: 06/17/2023]
Abstract
The novel material class of high entropy oxides with their unique and unexpected physicochemical properties is a candidate for energy applications. Herein, it is reported for the first time about the physico- and (photo-) electrochemical properties of ordered mesoporous (CoNiCuZnMg)Fe2 O4 thin films synthesized by a soft-templating and dip-coating approach. The A-site high entropy ferrites (HEF) are composed of periodically ordered mesopores building a highly accessible inorganic nanoarchitecture with large specific surface areas. The mesoporous spinel HEF thin films are found to be phase-pure and crack-free on the meso- and macroscale. The formation of the spinel structure hosting six distinct cations is verified by X-ray-based characterization techniques. Photoelectron spectroscopy gives insight into the chemical state of the implemented transition metals supporting the structural characterization data. Applied as photoanode for photoelectrochemical water splitting, the HEFs are photostable over several hours but show only low photoconductivity owing to fast surface recombination, as evidenced by intensity-modulated photocurrent spectroscopy. When applied as oxygen evolution reaction electrocatalyst, the HEF thin films possess overpotentials of 420 mV at 10 mA cm-2 in 1 m KOH. The results imply that the increase of the compositional disorder enhances the electronic transport properties, which are beneficial for both energy applications.
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Affiliation(s)
- Marcus Einert
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287, Darmstadt, Germany
| | - Arslan Waheed
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287, Darmstadt, Germany
| | - Stefan Lauterbach
- Institute for Applied Geosciences, Geomaterial Science, Technical University of Darmstadt, Schnittspahnstrasse 9, 64287, Darmstadt, Germany
| | - Maximilian Mellin
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287, Darmstadt, Germany
| | - Marcus Rohnke
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Lysander Q Wagner
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Institute for Physical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Julia Gallenberger
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287, Darmstadt, Germany
| | - Chuanmu Tian
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287, Darmstadt, Germany
| | - Bernd M Smarsly
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Institute for Physical Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Wolfram Jaegermann
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287, Darmstadt, Germany
| | - Franziska Hess
- Institute of Chemistry, Technical University Berlin, Strasse des 17. Juni 124, 10623, Berlin, Germany
| | - Helmut Schlaad
- University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Jan P Hofmann
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287, Darmstadt, Germany
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4
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Simon C, Zakaria MB, Kurz H, Tetzlaff D, Blösser A, Weiss M, Timm J, Weber B, Apfel UP, Marschall R. Magnetic NiFe 2 O 4 Nanoparticles Prepared via Non-Aqueous Microwave-Assisted Synthesis for Application in Electrocatalytic Water Oxidation. Chemistry 2021; 27:16990-17001. [PMID: 34227717 PMCID: PMC9291896 DOI: 10.1002/chem.202101716] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Indexed: 01/04/2023]
Abstract
Phase‐pure spinel‐type magnetic nickel ferrite (NiFe2O4) nanocrystals in the size range of 4 to 11 nm were successfully synthesized by a fast and energy‐saving microwave‐assisted approach. Size and accessible surface areas can be tuned precisely by the reaction parameters. Our results highlight the correlation between size, degree of inversion, and magnetic characteristics of NiFe2O4 nanoparticles, which enables fine‐tuning of these parameters for a particular application without changing the elemental composition. Moreover, the application potential of the synthesized powders for the electrocatalytic oxygen evolution reaction in alkaline media was demonstrated, showing that a low degree of inversion is beneficial for the overall performance. The most active sample reaches an overpotential of 380 mV for water oxidation at 10 mA cm−2 and 38.8 mA cm−2 at 1.7 V vs. RHE, combined with a low Tafel slope of 63 mV dec−1.
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Affiliation(s)
- Christopher Simon
- Department of Chemistry, University of Bayreuth, Universitaetsstrasse 30, 95447, Bayreuth, Germany
| | - Mohamed Barakat Zakaria
- Inorganic Chemistry I, Ruhr-University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany.,Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Hannah Kurz
- Department of Chemistry, University of Bayreuth, Universitaetsstrasse 30, 95447, Bayreuth, Germany
| | - David Tetzlaff
- Inorganic Chemistry I, Ruhr-University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany.,Fraunhofer Institute for Environmental, Safety, and Energy Technology, Osterfelder Strasse 3, 46047, Oberhausen, Germany
| | - André Blösser
- Department of Chemistry, University of Bayreuth, Universitaetsstrasse 30, 95447, Bayreuth, Germany
| | - Morten Weiss
- Department of Chemistry, University of Bayreuth, Universitaetsstrasse 30, 95447, Bayreuth, Germany
| | - Jana Timm
- Department of Chemistry, University of Bayreuth, Universitaetsstrasse 30, 95447, Bayreuth, Germany
| | - Birgit Weber
- Department of Chemistry, University of Bayreuth, Universitaetsstrasse 30, 95447, Bayreuth, Germany
| | - Ulf-Peter Apfel
- Inorganic Chemistry I, Ruhr-University Bochum, Universitaetsstrasse 150, 44801, Bochum, Germany.,Fraunhofer Institute for Environmental, Safety, and Energy Technology, Osterfelder Strasse 3, 46047, Oberhausen, Germany
| | - Roland Marschall
- Department of Chemistry, University of Bayreuth, Universitaetsstrasse 30, 95447, Bayreuth, Germany
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5
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Simon C, Blösser A, Eckardt M, Kurz H, Weber B, Zobel M, Marschall R. Magnetic properties and structural analysis on spinel MnFe
2
O
4
nanoparticles prepared
via
non‐aqueous microwave synthesis. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Christopher Simon
- Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
| | - André Blösser
- Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
| | - Mirco Eckardt
- Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
| | - Hannah Kurz
- Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
| | - Birgit Weber
- Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
| | - Mirijam Zobel
- Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
- Institute of Crystallography RWTH Aachen University 52066 Aachen Germany
| | - Roland Marschall
- Department of Chemistry University of Bayreuth Universitaetsstrasse 30 95447 Bayreuth Germany
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