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Gupta NP, Gupta P, Paliwal P, Thakkar N, Arya RK. Real time implementation of scaled droop control in hybrid microgrid with hydrogen storage for regulation of voltage and frequency. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34537-7. [PMID: 39106014 DOI: 10.1007/s11356-024-34537-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 07/24/2024] [Indexed: 08/07/2024]
Abstract
The incorporation of renewable energy resources (RERs) into smart city through hybrid microgrid (HMG) offers a sustainable solution for clean energy. The HMG architecture also involves linking the AC-microgrid and DC-microgrid through bidirectional interconnection converters (ICC). This HMG combines AC sources like wind-DFIG with DC sources such as solar PV and solid oxide fuel cell (SOFC), supported by battery energy storage systems (BESS) and hydrogen storage units (HSU). The HSU can generate and store hydrogen during RER surplus. This stored hydrogen can be further employed for production of electrical power along with numerous other applications. The HSU is emerged as a competent tool which can be utilised alone/in combination with BESS to enhance the system reliability. Harvesting power from clean and green sources requires its optimal operation and control while feeding to the existing grid. The existing strategies of controlling ICC are complex and not efficient; hence, a novel intelligent scaled droop control structure (SDCS) is proposed, utilizing frequency, DC voltage, and active power. The SDCS regulate voltage and frequency in both islanded mode (IM) and grid connected mode (GCM) of HMG. Experimental validation demonstrates its simplicity and effectiveness, making it suitable for smart city environments, ensuring uninterrupted power for critical loads with improved air quality.
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Affiliation(s)
- Narayan Prasad Gupta
- Electrical Engineering Department, University Institute of Technology, Rajiv Gandhi Proudyogiki Vishwavidyalaya (UIT-RGPV), Madhya Pradesh, Bhopal, India, 462033.
| | - Preeti Gupta
- Electrical Engineering Department, University Polytechnic, Rajiv Gandhi Proudyogiki Vishwavidyalaya (RGPV), Madhya Pradesh, Bhopal, India, 462033
| | - Priyanka Paliwal
- Electrical Engineering Department, Maulana Azad National Institute of Technology, Madhya Pradesh, Bhopal, India, 462047
| | - Nishant Thakkar
- Electrical Engineering Department, Maulana Azad National Institute of Technology, Madhya Pradesh, Bhopal, India, 462047
| | - Raj Kumar Arya
- Department of Chemical Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar, India, 144805
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Zhang H, Xu K, He F, Zhu F, Zhou Y, Yuan W, Liu Y, Liu M, Choi Y, Chen Y. Challenges and Advancements in the Electrochemical Utilization of Ammonia Using Solid Oxide Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2313966. [PMID: 38853746 DOI: 10.1002/adma.202313966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 05/28/2024] [Indexed: 06/11/2024]
Abstract
Solid oxide fuel cells utilized with NH3 (NH3-SOFCs) have great potential to be environmentally friendly devices with high efficiency and energy density. The advancement of this technology is hindered by the sluggish kinetics of chemical or electrochemical processes occurring on anodes/catalysts. Extensive efforts have been devoted to developing efficient and durable anode/catalysts in recent decades. Although modifications to the structure, composition, and morphology of anodes or catalysts are effective, the mechanistic understandings of performance improvements or degradations remain incompletely understood. This review informatively commences by summarizing existing reports on the progress of NH3-SOFCs. It subsequently outlines the influence of factors on the performance of NH3-SOFCs. The degradation mechanisms of the cells/systems are also reviewed. Lastly, the persistent challenges in designing highly efficient electrodes/catalysts for low-temperature NH3-SOFCs, and future perspectives derived from SOFCs are discussed. Notably, durability, thermal cycling stability, and power density are identified as crucial indicators for enhancing low-temperature (550 °C or below) NH3-SOFCs. This review aims to offer an updated overview of how catalysts/electrodes affect electrochemical activity and durability, offering critical insights for improving performance and mechanistic understanding, as well as establishing the scientific foundation for the design of electrodes for NH3-SOFCs.
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Affiliation(s)
- Hua Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Kang Xu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Fan He
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Feng Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yucun Zhou
- School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30309, USA
| | - Wei Yuan
- School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Ying Liu
- Research Institute of Renewable Energy and Advanced Materials, Zijin Mining Group Co. Ltd., Xiamen, Fujian, 361101, China
| | - Meilin Liu
- School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30309, USA
| | - YongMan Choi
- College of Photonics, National Yang Ming Chiao Tung University, Tainan, 71150, Taiwan
| | - Yu Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
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Svitlyk V, Braga Ferreira dos Santos L, Niessen J, Gilson S, Marquardt J, Findeisen S, Richter S, Akhmadaliev S, Huittinen N, Hennig C. Grazing-incidence synchrotron radiation diffraction studies on irradiated Ce-doped and pristine Y-stabilized ZrO 2 at the Rossendorf beamline. JOURNAL OF SYNCHROTRON RADIATION 2024; 31:355-362. [PMID: 38363222 PMCID: PMC10914159 DOI: 10.1107/s1600577524000304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/09/2024] [Indexed: 02/17/2024]
Abstract
In this work, Ce-doped yttria-stabilized zirconia (YSZ) and pure YSZ phases were subjected to irradiation with 14 MeV Au ions. Irradiation studies were performed to simulate long-term structural and microstructural damage due to self-irradiation in YSZ phases hosting alpha-active radioactive species. It was found that both the Ce-doped YSZ and the YSZ phases had a reasonable tolerance to irradiation at high ion fluences and the bulk crystallinity was well preserved. Nevertheless, local microstrain increased in all compounds under study after irradiation, with the Ce-doped phases being less affected than pure YSZ. Doping with cerium ions increased the microstructural stability of YSZ phases through a possible reduction in the mobility of oxygen atoms, which limits the formation of structural defects. Doping of YSZ with tetravalent actinide elements is expected to have a similar effect. Thus, YSZ phases are promising for the safe long-term storage of radioactive elements. Using synchrotron radiation diffraction, measurements of the thin irradiated layers of the Ce-YSZ and YSZ samples were performed in grazing incidence (GI) mode. A corresponding module for measurements in GI mode was developed at the Rossendorf Beamline and relevant technical details for sample alignment and data collection are also presented.
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Affiliation(s)
- Volodymyr Svitlyk
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Dresden, Germany
- Rossendorf Beamline (BM20), European Synchrotron Radiation Facility, Grenoble, France
| | | | - Jonas Niessen
- RWTH Aachen University, Institute of Mineral Engineering, Aachen, Germany
| | - Sara Gilson
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Dresden, Germany
| | - Julien Marquardt
- Goethe-University Frankfurt, Institute of Geosciences, Frankfurt, Germany
| | - Stefan Findeisen
- Helmholtz-Zentrum Dresden-Rossendorf, Mechanical Engineering, Dresden, Germany
| | - Selina Richter
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Dresden, Germany
| | | | - Nina Huittinen
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Dresden, Germany
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Berlin, Germany
| | - Christoph Hennig
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Dresden, Germany
- Rossendorf Beamline (BM20), European Synchrotron Radiation Facility, Grenoble, France
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Zhang L, Jiang Y, Zhu K, Shi N, Chen Z, Peng R, Xia C. Fe-Doped SDC Solid Solution as an Electrolyte for Low-to-Intermediate-Temperature Solid Oxide Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4648-4660. [PMID: 38241136 DOI: 10.1021/acsami.3c15918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
Ceria-based oxides, such as samaria-doped ceria (SDC), are potential electrolytes for low-to-intermediate-temperature solid oxide fuel cells (SOFCs). The sinterability of these materials can be improved by adding iron as the sintering aid. This work reveals that Fe is soluble in SDC, forming an Fe-doped SDC solid solution. It is found that the solubility is affected by the sintering temperature. Fe doping has obvious effects on electrolyte properties, including sintering characteristics, thermal expansion behaviors, and electrical conductivities in both air and hydrogen atmospheres. The conductivity obviously increases while the activation energy decreases by doping Fe. Compared with that of the bare SDC electrolyte, the performance of the single cell with the Fe-doped SDC is enhanced; for example, the peak power density is increased by 52.8% to 0.726 W cm-2 at 600 °C when humidified hydrogen is used as the fuel and ambient air is used as the oxidant. The single cell showed stable operation at 600 °C under a constant current density of 0.3 A cm-2 for 150 h. Therefore, the Fe-doped SDC solid solution shows promise as a potential electrolyte for low-to-intermediate-temperature SOFCs.
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Affiliation(s)
- Lijie Zhang
- CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China
| | - Yunan Jiang
- CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China
- Energy Materials Center, Anhui Estone Materials Technology Co. Ltd, 2-A-1, No. 106, Chuangxin Avenue, Hefei 230088, Anhui, P. R. China
| | - Kang Zhu
- CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China
| | - Nai Shi
- INAMORI Frontier Research Center, Kyushu University, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan
| | - Zhengguo Chen
- CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China
| | - Ranran Peng
- CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China
| | - Changrong Xia
- CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China
- Energy Materials Center, Anhui Estone Materials Technology Co. Ltd, 2-A-1, No. 106, Chuangxin Avenue, Hefei 230088, Anhui, P. R. China
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Ramesh S. Structural, optical and electrical properties of M 0.025Sm 0.175Ce 0.8O 2-δ: an electrolyte for IT-SOFCs. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2023. [DOI: 10.1080/16583655.2023.2177064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- Somoju Ramesh
- Department of Physics, GITAM School of Science, GITAM (Deemed to be University), Hyderabad, India
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6
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Agarkov D, Borik M, Buzaeva E, Korableva G, Kulebyakin A, Kuritsyna I, Larina N, Kyashkin V, Lomonova E, Milovich F, Myzina V, Ryabochkina P, Tabachkova N, Zakharov D. Structure and Physical Properties of Ceramic Materials Based on ZrO 2-Sc 2O 3 for SOFC Electrolytic Membranes Obtained from Powders of Melted Solid Solutions with a Similar Composition. MEMBRANES 2023; 13:717. [PMID: 37623778 PMCID: PMC10456402 DOI: 10.3390/membranes13080717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/26/2023]
Abstract
This paper presents the results of studying the phase composition, luminescent characteristics, and ionic conductivity of ceramic scandium-stabilized solid solutions of zirconium dioxide containing 9 and 10 mol% Sc2O3. Ceramic samples were prepared by sintering powders obtained by grinding melted solid solutions of the same composition. A comparative analysis of the obtained data with similar characteristics of single crystals has been carried out. Differences in the phase composition of ceramics and initial single crystals were found. The effect of the structure and properties of grain boundaries on the ionic conductivity of ceramic samples is discussed. It is shown that the differences in the ionic conductivity of ceramic samples and crystals are mainly due to changes in the structure and phase composition.
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Affiliation(s)
- Dmitrii Agarkov
- Osipyan Institute of Solid State Physics RAS, Academician Osipyan Str., 2, 142432 Chernogolovka, Russia; (G.K.); (I.K.)
- Moscow Institute of Physics and Technology, Institusky Lane, 9, 141700 Doloprudny, Russia
| | - Mikhail Borik
- Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia; (M.B.); (A.K.); (E.L.); (V.M.); (N.T.)
| | - Ekaterina Buzaeva
- Institute of High Technologies and New Materials, National Research Ogarev Mordovia State University, Bolshevistskaya Street, 68, 430005 Saransk, Russia; (E.B.); (N.L.); (V.K.); (P.R.)
| | - Galina Korableva
- Osipyan Institute of Solid State Physics RAS, Academician Osipyan Str., 2, 142432 Chernogolovka, Russia; (G.K.); (I.K.)
| | - Alexey Kulebyakin
- Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia; (M.B.); (A.K.); (E.L.); (V.M.); (N.T.)
| | - Irina Kuritsyna
- Osipyan Institute of Solid State Physics RAS, Academician Osipyan Str., 2, 142432 Chernogolovka, Russia; (G.K.); (I.K.)
| | - Nataliya Larina
- Institute of High Technologies and New Materials, National Research Ogarev Mordovia State University, Bolshevistskaya Street, 68, 430005 Saransk, Russia; (E.B.); (N.L.); (V.K.); (P.R.)
| | - Vladimir Kyashkin
- Institute of High Technologies and New Materials, National Research Ogarev Mordovia State University, Bolshevistskaya Street, 68, 430005 Saransk, Russia; (E.B.); (N.L.); (V.K.); (P.R.)
| | - Elena Lomonova
- Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia; (M.B.); (A.K.); (E.L.); (V.M.); (N.T.)
| | - Filipp Milovich
- Department of Materials Science, Moscow Polytechnic University, Bolshaya Semyonovskaya Street, 38, 107023 Moscow, Russia;
- Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology «MISIS», Leninskiy Prospect, 4, 119049 Moscow, Russia;
| | - Valentina Myzina
- Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia; (M.B.); (A.K.); (E.L.); (V.M.); (N.T.)
| | - Polina Ryabochkina
- Institute of High Technologies and New Materials, National Research Ogarev Mordovia State University, Bolshevistskaya Street, 68, 430005 Saransk, Russia; (E.B.); (N.L.); (V.K.); (P.R.)
| | - Nataliya Tabachkova
- Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia; (M.B.); (A.K.); (E.L.); (V.M.); (N.T.)
- Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology «MISIS», Leninskiy Prospect, 4, 119049 Moscow, Russia;
| | - Denis Zakharov
- Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology «MISIS», Leninskiy Prospect, 4, 119049 Moscow, Russia;
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Sadykov V, Pikalova E, Sadovskaya E, Shlyakhtina A, Filonova E, Eremeev N. Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility. MEMBRANES 2023; 13:698. [PMID: 37623759 PMCID: PMC10456803 DOI: 10.3390/membranes13080698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/23/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023]
Abstract
Oxygen and hydrogen mobility are among the important characteristics for the operation of solid oxide fuel cells, permselective membranes and many other electrochemical devices. This, along with other characteristics, enables a high-power density in solid oxide fuel cells due to reducing the electrolyte resistance and enabling the electrode processes to not be limited by the electrode-electrolyte-gas phase triple-phase boundary, as well as providing high oxygen or hydrogen permeation fluxes for membranes due to a high ambipolar conductivity. This work focuses on the oxygen and hydrogen diffusion of mixed ionic (oxide ionic or/and protonic)-electronic conducting materials for these devices, and its role in their performance. The main laws of bulk diffusion and surface exchange are highlighted. Isotope exchange techniques allow us to study these processes in detail. Ionic transport properties of conventional and state-of-the-art materials including perovskites, Ruddlesden-Popper phases, fluorites, pyrochlores, composites, etc., are reviewed.
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Affiliation(s)
- Vladislav Sadykov
- Federal Research Center, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (E.S.); (N.E.)
| | - Elena Pikalova
- Institute of High Temperature Electrochemistry UB RAS, 620137 Yekaterinburg, Russia;
- Graduate School of Economics and Management, Ural Federal University, 620002 Yekaterinburg, Russia
| | - Ekaterina Sadovskaya
- Federal Research Center, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (E.S.); (N.E.)
| | - Anna Shlyakhtina
- Federal Research Center, Semenov Institute of Chemical Physics RAS, 119991 Moscow, Russia;
| | - Elena Filonova
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Yekaterinburg, Russia;
| | - Nikita Eremeev
- Federal Research Center, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia; (E.S.); (N.E.)
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Filonova E, Pikalova E. Overview of Approaches to Increase the Electrochemical Activity of Conventional Perovskite Air Electrodes. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4967. [PMID: 37512242 PMCID: PMC10381493 DOI: 10.3390/ma16144967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023]
Abstract
The progressive research trends in the development of low-cost, commercially competitive solid oxide fuel cells with reduced operating temperatures are closely linked to the search for new functional materials as well as technologies to improve the properties of established materials traditionally used in high-temperature devices. Significant efforts are being made to improve air electrodes, which significantly contribute to the degradation of cell performance due to low oxygen reduction reaction kinetics at reduced temperatures. The present review summarizes the basic information on the methods to improve the electrochemical performance of conventional air electrodes with perovskite structure, such as lanthanum strontium manganite (LSM) and lanthanum strontium cobaltite ferrite (LSCF), to make them suitable for application in second generation electrochemical cells operating at medium and low temperatures. In addition, the information presented in this review may serve as a background for further implementation of developed electrode modification technologies involving novel, recently investigated electrode materials.
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Affiliation(s)
- Elena Filonova
- Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg 620002, Russia
| | - Elena Pikalova
- Laboratory of Kinetics, Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620137, Russia;
- Department of Environmental Economics, Graduate School of Economics and Management, Ural Federal University, Yekaterinburg 620002, Russia
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Sharma M, K H, Gaur UK, Ganguli AK. Synthesis of mesoporous SiO 2-CeO 2 hybrid nanostructures with high catalytic activity for transamidation reaction. RSC Adv 2023; 13:13134-13141. [PMID: 37124026 PMCID: PMC10140673 DOI: 10.1039/d3ra01552a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 04/17/2023] [Indexed: 05/02/2023] Open
Abstract
Transamidation reactions catalyzed by boronic acid derivatives and metal catalysts are well known nevertheless their requirement for elevated temperatures and long reaction times were considered major obstacles in converting amides to N-alkyl amides with the coupling of primary amides and amines. The acidic-basic co-existence of ceria nanoparticles is considered a perfect choice for different catalytic activities. Mesoporous silica on the other hand is well known for its use as a supporting material for catalysts owing to its excellent characteristics like large surface area, good absorption capacity, and high-temperature stability. The SiO2-CeO2 hybrid nanocomposite was prepared by solvothermal route followed by annealing and the formation of the catalyst was confirmed by XRD, EDX, FTIR, and TEM characterization techniques. The hybrid catalyst shows high catalytic activity towards transamidation reaction at very low temperatures and in solvent-free conditions compared to pure ceria nanoparticles. The SiO2-CeO2 catalyst showed more than 99% selectivity and a remarkable catalytic activity of above 90% for the conversion of N-heptyl amine with acetamide to N-heptyl acetamide at a very low temperature of 120 °C for 3 hours. Furthermore, the catalyst remains stable and active for repeated catalytic cycles. It established 80% catalytic activity even after 4 repeated cycles making it suitable for multiple-time usages.
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Affiliation(s)
- Manu Sharma
- Central University of Gujarat Gandhinagar India
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10
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Sytchkova A, Protopapa ML, Olivero P, Tapfer L, Burresi E, Dunatov T, Siketić Z, Palmisano M, Pesce E, Wang Y, Wang Z, He H. Optical characterization of the impact of 100 keV protons on the optical properties of ZrO 2 films prepared by ALD on fused silica substrates. APPLIED OPTICS 2023; 62:B182-B187. [PMID: 37132905 DOI: 10.1364/ao.477965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Atomic layer deposition (ALD)-grown zirconia films underwent irradiation by 100 keV protons at fluences ranging from 1⋅1012 p +/c m 2 through 5⋅1014 p +/c m 2. The induced structural damage was modeled using the stopping and range of ions in matter (SRIM) and compared with the change of the optical properties characterized by ellipsometry, spectrophotometry, and x-ray reflectometry. Proton-induced contamination of the optical surface due to deposition of a carbon-rich layer was determined. Correct estimation of the substrate damage was shown to be critical for reliable evaluation of the optical constants of the irradiated films. The ellipsometric angle Δ is shown to be sensitive to both the presence of the buried damaged zone in the irradiated substrate and the contamination layer on the surface of the samples. The complex chemistry in carbon-doped zirconia accommodating over-stoichiometric oxygen is discussed, along with the impact of the film composition change on the refractive index of the irradiated films.
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Effect of Copper Substitution on the Electrocatalytic Activity of ZnMn2O4 Spinel Embedded on Reduced Graphene Oxide Nanosheet for the Oxygen Evolution Process. CATALYSIS SURVEYS FROM ASIA 2023. [DOI: 10.1007/s10563-023-09389-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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12
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Simonenko TL, Simonenko NP, Gorobtsov PY, Simonenko EP, Kuznetsov NT. Microextrusion Printing of Multilayer Hierarchically Organized Planar Nanostructures Based on NiO, (CeO 2) 0.8(Sm 2O 3) 0.2 and La 0.6Sr 0.4Co 0.2Fe 0.8O 3-δ. MICROMACHINES 2022; 14:3. [PMID: 36677064 PMCID: PMC9865654 DOI: 10.3390/mi14010003] [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: 11/20/2022] [Revised: 12/11/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
In this paper, NiO, La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) and (CeO2)0.8(Sm2O3)0.2 (SDC) nanopowders with different microstructures were obtained using hydrothermal and glycol-citrate methods. The microstructural features of the powders were examined using scanning electron microscopy (SEM). The obtained oxide powders were used to form functional inks for the sequential microextrusion printing of NiO-SDC, SDC and LSCF-SDC coatings with resulting three-layer structures of (NiO-SDC)/SDC/(LSCF-SDC) composition. The crystal structures of these layers were studied using an X-ray diffraction analysis, and the microstructures were studied using atomic force microscopy. Scanning capacitance microscopy was employed to build maps of capacitance gradient distribution over the surface of the oxide layers, and Kelvin probe force microscopy was utilized to map surface potential distribution and to estimate the work function values of the studied oxide layers. Using SEM and an energy-dispersive X-ray microanalysis, the cross-sectional area of the formed three-layer structure was analyzed-the interfacial boundary and the chemical element distribution over the surface of the cross-section were investigated. Using impedance spectroscopy, the temperature dependence of the electrical conductivity was also determined for the printed three-layer nanostructure.
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Affiliation(s)
- Tatiana L. Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
| | - Nikolay P. Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow 119991, Russia
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Pikalova EY, Kalinina EG, Pikalova NS, Filonova EA. High-Entropy Materials in SOFC Technology: Theoretical Foundations for Their Creation, Features of Synthesis, and Recent Achievements. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15248783. [PMID: 36556589 PMCID: PMC9781791 DOI: 10.3390/ma15248783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 05/31/2023]
Abstract
In this review, recent achievements in the application of high-entropy alloys (HEAs) and high-entropy oxides (HEOs) in the technology of solid oxide fuel cells (SOFC) are discussed for the first time. The mechanisms of the stabilization of a high-entropy state in such materials, as well as the effect of structural and charge factors on the stability of the resulting homogeneous solid solution are performed. An introduction to the synthesis methods for HEAs and HEOs is given. The review highlights such advantages of high-entropy materials as high strength and the sluggish diffusion of components, which are promising for the use at the elevated temperatures, which are characteristic of SOFCs. Application of the medium- and high-entropy materials in the hydrocarbon-fueled SOFCs as protective layers for interconnectors and as anode components, caused by their high stability, are covered. High-entropy solid electrolytes are discussed in comparison with traditional electrolyte materials in terms of conductivity. High-entropy oxides are considered as prospective cathodes for SOFCs due to their superior electrochemical activity and long-term stability compared with the conventional perovskites. The present review also determines the prioritizing directions in the future development of high-entropy materials as electrolytes and electrodes for SOFCs operating in the intermediate and low temperature ranges.
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Affiliation(s)
- Elena Y. Pikalova
- Laboratory of Solid Oxide Fuel Cells, Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620137, Russia
- Department of Environmental Economics, Graduate School of Economics and Management, Ural Federal University, Yekaterinburg 620002, Russia
| | - Elena G. Kalinina
- Laboratory of Complex Electrophysic Investigations, Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620016, Russia
- Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg 620002, Russia
| | - Nadezhda S. Pikalova
- Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620016, Russia
| | - Elena A. Filonova
- Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg 620002, Russia
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