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Ozgur C, Erdil T, Geyikci U, Okuyucu C, Lokcu E, Kalay YE, Toparli C. Engineering Oxygen Vacancies in (FeCrCoMnZn) 3O 4-δ High Entropy Spinel Oxides Through Altering Fabrication Atmosphere for High-Performance Rechargeable Zinc-Air Batteries. GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2300199. [PMID: 38223889 PMCID: PMC10784197 DOI: 10.1002/gch2.202300199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/03/2023] [Indexed: 01/16/2024]
Abstract
High entropy oxides (HEOs) offer great potential as catalysts for oxygen electrocatalytic reactions in alkaline environments. Herein, a novel synthesis approach to prepare (FeCrCoMnZn)3O4-δ high entropy spinel oxide in a vacuum atmosphere, with the primary objective of introducing oxygen vacancies into the crystal structure, is presented. As compared to the air-synthesized counterpart, the (FeCrCoMnZn)3O4-δ with abundant oxygen vacancies demonstrates a low (better) bifunctional (BI) index of 0.89 V in alkaline media, indicating enhanced electrocatalytic oxygen catalytic activity. Importantly, (FeCrCoMnZn)3O4-δ demonstrates outstanding long-term electrochemical and structural stability. When utilized as electrocatalysts in the air cathode of Zn-air batteries, the vacuum atmosphere synthesized (FeCrCoMnZn)3O4-δ catalysts outperform the samples treated in an air atmosphere, displaying superior peak power density, specific capacity, and cycling stability. These findings provide compelling evidence that manipulating the synthesis atmosphere of multi-component oxides can serve as a novel approach to tailor their electrochemical performance.
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Affiliation(s)
- Cagla Ozgur
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Tuncay Erdil
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Uygar Geyikci
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Can Okuyucu
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Ersu Lokcu
- Department of Metallurgical and Materials EngineeringEskisehir Osmangazi UniversityEskisehir26040Turkey
| | - Yunus Eren Kalay
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Cigdem Toparli
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
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Flores-Lasluisa JX, Huerta F, Cazorla-Amorós D, Morallón E. Transition metal oxides with perovskite and spinel structures for electrochemical energy production applications. ENVIRONMENTAL RESEARCH 2022; 214:113731. [PMID: 35753372 DOI: 10.1016/j.envres.2022.113731] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
Transition metal oxide-based materials are an interesting alternative to substitute noble-metal based catalyst in energy conversion devices designed for oxygen reduction (ORR), oxygen evolution (OER) and hydrogen evolution reactions (HER). Perovskite (ABO3) and spinel (AB2O4) oxides stand out against other structures due to the possibility of tailoring their chemical composition and, consequently, their properties. Particularly, the electrocatalytic performance of these materials depends on features such as chemical composition, crystal structure, nanostructure, cation substitution level, eg orbital filling or oxygen vacancies. However, they suffer from low electrical conductivity and surface area, which affects the catalytic response. To mitigate these drawbacks, they have been combined with carbon materials (e.g. carbon black, carbon nanotubes, activated carbon, and graphene) that positively influence the overall catalytic activity. This review provides an overview on tunable perovskites (mainly lanthanum-based) and spinels featuring 3d metal cations such as Mn, Fe, Co, Ni and Cu on octahedral sites, which are known to be active for the electrochemical energy conversion.
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Affiliation(s)
- J X Flores-Lasluisa
- Dept. Química Física e Instituto Universitario de Materiales, Universidad de Alicante, Ap. 99, E-03080, Alicante, Spain
| | - F Huerta
- Dept. Ingenieria Textil y Papelera, Universitat Politecnica de Valencia, Plaza Ferrandiz y Carbonell, 1, E-03801, Alcoy, Spain
| | - D Cazorla-Amorós
- Dept. Química Inorgánica e Instituto Universitario de Materiales, Universidad de Alicante, Ap. 99, E-03080, Alicante, Spain
| | - E Morallón
- Dept. Química Física e Instituto Universitario de Materiales, Universidad de Alicante, Ap. 99, E-03080, Alicante, Spain.
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3
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Monolithic carbon-free gas diffusion electrodes for secondary metal-air batteries. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115112] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Beall CE, Fabbri E, Schmidt TJ. Perovskite Oxide Based Electrodes for the Oxygen Reduction and Evolution Reactions: The Underlying Mechanism. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04473] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Casey E. Beall
- Paul Scherrer Institute (PSI), Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - Emiliana Fabbri
- Paul Scherrer Institute (PSI), Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - Thomas J. Schmidt
- Paul Scherrer Institute (PSI), Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
- Laboratory of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
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Carbon Material and Cobalt-Substitution Effects in the Electrochemical Behavior of LaMnO 3 for ORR and OER. NANOMATERIALS 2020; 10:nano10122394. [PMID: 33266063 PMCID: PMC7759965 DOI: 10.3390/nano10122394] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/19/2020] [Accepted: 11/27/2020] [Indexed: 12/03/2022]
Abstract
LaMn1−xCoxO3 perovskites were synthesized by a modified sol-gel method which incorporates EDTA. These materials’ electrochemical activity towards both oxygen reduction (ORR) and oxygen evolution reactions (OER) was studied. The cobalt substitution level determines some physicochemical properties and, particularly, the surface concentration of Co and Mn’s different oxidation states. As a result, the electroactivity of perovskite materials can be tuned using their composition. The presence of cobalt at low concentration influences the catalytic activity positively, and better bifunctionality is attained. As in other perovskites, their low electrical conductivity limits their applicability in electrochemical devices. It was found that the electrochemical performance improved significantly by physically mixing with a mortar the active materials with two different carbon black materials. The existence of a synergistic effect between the electroactive component and the carbon material was interpreted in light of the strong carbon–oxygen–metal interaction. Some mixed samples are promising electrocatalysts towards both ORR and OER.
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Optimization of the Catalytic Layer for Alkaline Fuel Cells Based on Fumatech Membranes and Ionomer. Catalysts 2020. [DOI: 10.3390/catal10111353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Polymer electrolyte fuel cells with alkaline anion exchange membranes (AAEMs) have gained increasing attention because of the faster reaction kinetics associated with the alkaline environment compared to acidic media. While the development of anion exchange polymer membranes is increasing, the catalytic layer structure and composition of electrodes is of paramount importance to maximize fuel cell performance. In this work, we examine the preparation procedures for electrodes by catalyst-coated substrate to be used with a well-known commercial AAEM, Fumasep® FAA-3, and a commercial ionomer of the same nature (Fumion), both from Fumatech GmbH. The anion exchange procedure, the ionomer concentration in the catalytic layer and also the effect of membrane thickness, are investigated as they are very relevant parameters conditioning the cell behavior. The best power density was achieved upon ion exchange of the ionomer by submerging the electrodes in KCl (isopropyl alcohol/water solution) for at least one hour, two exchange steps, followed by treatment in KOH for 30 min. The optimum ionomer (Fumion) concentration was found to be close to 50 wt%, with a relatively narrow interval of functioning ionomer percentages. These results provide a practical guide for electrode preparation in AAEM-based fuel cell research.
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Kéranguéven G, Bouillet C, Papaefthymiou V, Simonov PA, Savinova ER. How key characteristics of carbon materials influence the ORR activity of LaMnO3- and Mn3O4-carbon composites prepared by in situ autocombustion method. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136557] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rivera-Gavidia L, Fernández de la Puente I, Hernández-Rodríguez M, Celorrio V, Sebastián D, Lázaro M, Pastor E, García G. Bi-functional carbon-based catalysts for unitized regenerative fuel cells. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Enhanced Photoelectrochemical Water Splitting at Hematite Photoanodes by Effect of a NiFe-Oxide co-Catalyst. Catalysts 2020. [DOI: 10.3390/catal10050525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Tandem photoelectrochemical cells (PECs), made up of a solid electrolyte membrane between two low-cost photoelectrodes, were investigated to produce “green” hydrogen by exploiting renewable solar energy. The assembly of the PEC consisted of an anionic solid polymer electrolyte membrane (gas separator) clamped between an n-type Fe2O3 photoanode and a p-type CuO photocathode. The semiconductors were deposited on fluorine-doped tin oxide (FTO) transparent substrates and the cell was investigated with the hematite surface directly exposed to a solar simulator. Ionomer dispersions obtained from the dissolution of commercial polymers in the appropriate solvents were employed as an ionic interface with the photoelectrodes. Thus, the overall photoelectrochemical water splitting occurred in two membrane-separated compartments, i.e., the oxygen evolution reaction (OER) at the anode and the hydrogen evolution reaction (HER) at the cathode. A cost-effective NiFeOx co-catalyst was deposited on the hematite photoanode surface and investigated as a surface catalytic enhancer in order to improve the OER kinetics, this reaction being the rate-determining step of the entire process. The co-catalyst was compared with other well-known OER electrocatalysts such as La0.6Sr0.4Fe0.8CoO3 (LSFCO) perovskite and IrRuOx. The Ni-Fe oxide was the most promising co-catalyst for the oxygen evolution in the anionic environment in terms of an enhanced PEC photocurrent and efficiency. The materials were physico-chemically characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM).
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Alegre C, Busacca C, Di Blasi A, Di Blasi O, Aricò AS, Antonucci V, Baglio V. Electrocatalysis of Oxygen on Bifunctional Nickel‐Cobaltite Spinel. ChemElectroChem 2020. [DOI: 10.1002/celc.201901584] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Cinthia Alegre
- Instituto de Carboquímica (ICB)Consejo Superior de Investigaciones Científicas (CSIC) C/. Miguel Luesma Castán, 4. 50018 Zaragoza Spain
- Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE)Consiglio Nazionale delle Ricerche (CNR) Salita S. Lucia sopra Contesse, 5. 98126 Messina Italy
| | - Concetta Busacca
- Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE)Consiglio Nazionale delle Ricerche (CNR) Salita S. Lucia sopra Contesse, 5. 98126 Messina Italy
| | - Alessandra Di Blasi
- Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE)Consiglio Nazionale delle Ricerche (CNR) Salita S. Lucia sopra Contesse, 5. 98126 Messina Italy
| | - Orazio Di Blasi
- Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE)Consiglio Nazionale delle Ricerche (CNR) Salita S. Lucia sopra Contesse, 5. 98126 Messina Italy
| | - Antonino S. Aricò
- Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE)Consiglio Nazionale delle Ricerche (CNR) Salita S. Lucia sopra Contesse, 5. 98126 Messina Italy
| | - Vincenzo Antonucci
- Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE)Consiglio Nazionale delle Ricerche (CNR) Salita S. Lucia sopra Contesse, 5. 98126 Messina Italy
| | - Vincenzo Baglio
- Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” (ITAE)Consiglio Nazionale delle Ricerche (CNR) Salita S. Lucia sopra Contesse, 5. 98126 Messina Italy
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Majee R, Mondal S, Bhattacharyya S. Charge transfer from perovskite oxide nanosheets to N-doped carbon nanotubes to promote enhanced performance of a zinc-air battery. Chem Commun (Camb) 2020; 56:8277-8280. [PMID: 32572406 DOI: 10.1039/d0cc03154b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Room temperature engineered spatially connected p-type double perovskite oxide (BaPrMn1.75Co0.25O5+δ, BPMC) nanosheets (NSs) with n-type nitrogen-doped multi-walled carbon nanotubes (NCNTs) show significant enhancement in bifunctional oxygen electrocatalytic activity. The optimization of the donor level by charge transfer from the perovskite to NCNTs is demonstrated to be a prodigious approach to facilitate redox oxygen activation. A proof-of-concept rechargeable zinc-air battery (ZAB) with BPMC containing a 10 wt% NCNT (BPMC/NCNT-10) cathode demonstrates the highest specific discharge capacity of 789.2 mA h gZn-1 and cyclic stability for 85 h at a current density of 5 mA cm-2.
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Affiliation(s)
- Rahul Majee
- Department of Chemical Sciences, and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India.
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Performance Improvement in Direct Methanol Fuel Cells by Using CaTiO3-δ Additive at the Cathode. Catalysts 2019. [DOI: 10.3390/catal9121017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A non-stoichiometric calcium titanate CaTiO3-δ (CTO) was synthesized and used as oxygen reduction reaction co-catalyst (together with Pt/C) in direct methanol fuel cells (DMFCs). A membrane-electrode assembly (MEA), equipped with a composite cathode formulation (Pt/C:CTO1:1), was investigated in DMFC, using a 2 M methanol solution at the anode and oxygen at the cathode, and compared with an MEA equipped with a benchmark Pt/C cathode catalyst. It appears that the presence of the CTO additive promotes the oxygen reduction reaction (ORR) due to the presence of oxygen vacancies as available active sites for oxygen adsorption in the lattice. The increase in power density obtained with the CTO-based electrode, compared with the benchmark Pt/C, was more than 40% at 90 °C, reaching a maximum power density close to 120 mW cm−2, which is one of the highest values reported in the literature under similar operating conditions.
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Lu YT, Wu J, Lin ZX, You TH, Lin SC, Tiffany Chen HY, Hardwick LJ, Hu CC. Enhanced oxygen evolution performance of spinel Fe0.1Ni0.9Co2O4/Activated carbon composites. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Retuerto M, Calle-Vallejo F, Pascual L, Lumbeeck G, Fernandez-Diaz MT, Croft M, Gopalakrishnan J, Peña MA, Hadermann J, Greenblatt M, Rojas S. La 1.5Sr 0.5NiMn 0.5Ru 0.5O 6 Double Perovskite with Enhanced ORR/OER Bifunctional Catalytic Activity. ACS APPLIED MATERIALS & INTERFACES 2019; 11:21454-21464. [PMID: 31117426 DOI: 10.1021/acsami.9b02077] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Perovskites (ABO3) with transition metals in active B sites are considered alternative catalysts for the water oxidation to oxygen through the oxygen evolution reaction (OER) and for the oxygen reduction through the oxygen reduction reaction (ORR) back to water. We have synthesized a double perovskite (A2BB'O6) with different cations in A, B, and B' sites, namely, (La1.5Sr0.5)A(Ni0.5Mn0.5)B(Ni0.5Ru0.5)B'O6 (LSNMR), which displays an outstanding OER/ORR bifunctional performance. The composition and structure of the oxide has been determined by powder X-ray diffraction, powder neutron diffraction, and transmission electron microscopy to be monoclinic with the space group P21/ n and with cationic ordering between the ions in the B and B' sites. X-ray absorption near-edge spectroscopy suggests that LSNMR presents a configuration of ∼Ni2+, ∼Mn4+, and ∼Ru5+. This bifunctional catalyst is endowed with high ORR and OER activities in alkaline media, with a remarkable bifunctional index value of ∼0.83 V (the difference between the potentials measured at -1 mA cm-2 for the ORR and +10 mA cm-2 for the OER). The ORR onset potential ( Eonset) of 0.94 V is among the best reported to date in alkaline media for ORR-active perovskites. The ORR mass activity of LSNMR is 1.1 A g-1 at 0.9 V and 7.3 A g-1 at 0.8 V. Furthermore, LSNMR is stable in a wide potential window down to 0.05 V. The OER potential to achieve a current density of 10 mA cm-2 is 1.66 V. Density functional theory calculations demonstrate that the high ORR/OER activity of LSNMR is related to the presence of active Mn sites for the ORR- and Ru-active sites for the OER by virtue of the high symmetry of the respective reaction steps on those sites. In addition, the material is stable to ORR cycling and also considerably stable to OER cycling.
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Affiliation(s)
| | - Federico Calle-Vallejo
- Departament de Ciència de Materials i Química Fisica & Institut de Química Teòrica i Computacional (IQTCUB) , Universitat de Barcelona , Martí i Franqués 1 , 08028 Barcelona , Spain
| | | | - Gunnar Lumbeeck
- EMAT , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
| | | | - Mark Croft
- Department of Physics , Rutgers, The State University of New Jersey , 610 Taylor Road , Piscataway , New Jersey 08854 , United States
| | | | | | - Joke Hadermann
- EMAT , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
| | - Martha Greenblatt
- Department of Chemistry and Chemical Biology , Rutgers, The State University of New Jersey , 610 Taylor Road , Piscataway , New Jersey 08854 , United States
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NiFeOx as a Bifunctional Electrocatalyst for Oxygen Reduction (OR) and Evolution (OE) Reaction in Alkaline Media. Catalysts 2018. [DOI: 10.3390/catal8080328] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
This article reports the two-step synthesis of NiFeOx nanomaterials and their characterization and bifunctional electrocatalytic activity measurements in alkaline electrolyte for metal-air batteries. The samples were mostly in layered double hydroxide at the initial temperature, but upon heat treatment, they were converted to NiFe2O4 phases. The electrochemical behaviour of the different samples was studied by linear sweep voltammetry and cyclic voltammetry on the glassy carbon electrode. The OER catalyst activity was observed for low mass loadings (0.125 mg cm−2), whereas high catalyst loading exhibited the best performance on the ORR side. The sample heat-treated at 250 °C delivered the highest bi-functional oxygen evolution and reduction reaction activity (OER/ORR) thanks to its thin-holey nanosheet-like structure with higher nickel oxidation state at 250 °C. This work further helps to develop low-cost electrocatalyst development for metal-air batteries.
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Pichler B, Berner BS, Rauch N, Zelger C, Pauling HJ, Gollas B, Hacker V. The impact of operating conditions on component and electrode development for zinc-air flow batteries. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1233-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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