Article
Chemistry, Physical
Mantas Norkus, Andrius Laurikenas, Diana Vistorskaja, Kestutis Mazeika, Dalis Baltrunas, Ramunas Skaudzius, Aldona Beganskiene, Aivaras Kareiva
Summary: This study investigates the substitution effects of the first four lanthanides (La, Ce, Pr, and Nd) in yttrium iron garnet (Y3Fe5O12, YIG) and finds that the substitutional level is dependent on the nature of the lanthanide element.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Yu Wang, Kuo-Chih Chou, Guo-Hua Zhang
Summary: Due to their strong anti-poisoning ability, good emission stability, and high emission current density, lanthanum hexaboride (LaB6) and cerium hexaboride (CeB6) have been widely used in electron emission emitter. In this paper, a new manufacturing method for LaB6 (or CeB6) powder was proposed by using La2O3 (or CeO2), B4C, and Al as raw materials. After high-temperature reaction and alkaline leaching, LaB6 or CeB6 powder with particle size of about 10 μm was obtained, and single crystal blocks were manufactured using the obtained powder through the Al metal flux method.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Applied
Amilton Barbosa Botelho Junior, Denise Crocce Romano Espinosa, Jorge Alberto Soares Tenorio
Summary: Rare earth elements are critical metals due to the risk of supply interruption. Recycling of waste electrical and electronic equipment can be an alternative supply source. Aqueous media processes allow extraction and separation of elements even at low concentrations.
JOURNAL OF RARE EARTHS
(2021)
Review
Chemistry, Multidisciplinary
Nianjun Yang, Siyu Yu, Wenjun Zhang, Hui-Ming Cheng, Patrice Simon, Xin Jiang
Summary: This study introduces a method to improve the energy density of electrochemical capacitors (ECs) by using confined soluble redox electrolytes and porous electrodes. The method utilizes the diffusion-controlled faradaic processes of confined redox electrolytes at the surface of a porous electrode, combining the high power densities of ECs and high energy densities of batteries. Significant progress has been made in this field, and strategies to improve performance are highlighted.
ADVANCED MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Waseem Raza, Ghulam Nabi, Asim Shahzad, Nafisa Malik, Nadeem Raza
Summary: The synthesis and characterization of lanthanum cerium ferrite nanoparticles indicate that the hydrothermal-synthesized J2 electrode exhibits high specific capacitance and cycling stability, making it a promising candidate for supercapacitor applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Chemical
Jan Mrazek, Sandip Bysakh, Roman Skala, Ales Mracek, Anirban Dhar, Ivo Barton, Ivan Kasik
Summary: A versatile sol-gel approach is presented for the synthesis of nanocrystalline (Eu0.5Y0.5)(2)Ti2O7. The crystallization kinetics, nucleation mechanism, and crystal structure were studied. The results showed a regular distribution of Eu3+ and Y3+ ions and provided key information for tailoring the structural properties of nanocrystalline powders for photonic applications.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ying Tao, Baojun Zhu
Summary: The article investigated the effects of 1.0 mol% Y doping on the structure and electrochemical properties of LiNiPO4 materials, revealing that doping could enhance conductivity, lithium-ion diffusion rate, and overall material performance.
Article
Chemistry, Applied
Tugce N. Eran, Federico Galli, Francesco Mazzoni, Mariangela Longhi, Arian Grainca, Gregory Patience, Carlo Pirola
Summary: This study synthesized iron-based catalysts over various metallosilicates and tested their performance in Fischer-Tropsch synthesis. The results showed that Fe/Ce/SiO2 had the highest CO conversion rate, while Fe/Zr/SiO2 had the highest surface area.
Article
Environmental Sciences
Tran Le Luu, Pham Thi Kim Ngan
Summary: Textile wastewater containing harmful organic compounds and colors can affect aquatic life and human health. This study aims to fabricate Ti/SnO2-Nb2O5 electrodes for the treatment of textile wastewater. The Ti/SnO2-Nb2O5 electrode with a mole ratio of 3:7 showed the best performance with a longest service life of 39 hours in textile wastewater treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Raissa Venancio, Rafael Vicentini, C. Manuel J. Pinzon, Debora A. Correa, Andre N. Miranda, Adriana C. Queiroz, Francisco Tadeu Degasperi, Leonardo J. A. Siqueira, Leonardo M. Da Silva, Hudson Zanin
Summary: This study comprehensively evaluates the stability of electrodes and electrolytes in organic-based EDLCs using various experimental and simulation methods. The research findings show that carbon-based electrodes remain stable in different conditions, and provide guidance on determining the maximum stable cell voltage, specific capacitance, energy, power, and equivalent series resistance.
ENERGY STORAGE MATERIALS
(2023)
Article
Materials Science, Ceramics
Dedikarni Panuh, S. A. Muhammed Ali, Dody Yulianto, Muhammad Fadhlullah Shukur, Andanastuti Muchtar
Summary: Lowering operating temperature and optimizing electrolyte thickness are crucial in SOFC fabrication. This study focused on the impact of yttrium-stabilized bismuth bilayer electrolyte thickness on electrical performance, with 5.5 μm thickness exhibiting the highest efficiency at 600 degrees C. The bilayer electrolyte successfully contributed to oxygen reduction reaction and reduced electronic conduction in Sm0.2Ce0.8O1.9 electrolyte materials.
CERAMICS INTERNATIONAL
(2021)
Article
Crystallography
Karishma Mahmood, Muhammad Adil Mansoor, Mudassir Iqbal, Abul Kalam, Javed Iqbal, Asim Jilani, S. Wageh
Summary: This study focuses on the fabrication of NiO-ZrO2/FTO and NiO-Y2O3/FTO thin films using a dip-coating method. The fabricated films show successful formation of crystalline mixed metal oxide thin films without impurities. The electrochemical oxidation of methanol on these films demonstrates good performance and stability.
Article
Chemistry, Physical
Eric T. Baxter, Jun Zhang, Shuai Tan, Manh-Thuong Nguyen, Difan Zhang, Qinqin Yuan, Wenjin Cao, Xue-Bin Wang, Venkateshkumar Prabhakaran, Vassiliki-Alexandra Glezakou, Grant E. Johnson
Summary: This study investigates the effects of ionic liquid clusters on ion adsorption and separation, and demonstrates that different sized and stoichiometric ionic liquid clusters can be used to improve the efficiency of electrochemical separations.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Applied
Padma S. Vankar, Afreen Begum
Summary: This study focuses on the use of rare earth salts as a sustainable alternative to conventional mordants in natural dyeing. The goal is to increase dye uptake, improve color fastness, and reduce effluent pollution. The findings show that dyeing with annatto seed extract can achieve good color depth and improved fastness properties. The research implication is that using rare earth salt in smaller quantities can provide better dyeing results without increasing the effluent load.
PIGMENT & RESIN TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Mingyang Zhou, Zhijun Liu, Meilong Chen, Ziyi Zhu, Dan Cao, Jiang Liu
Summary: Protonic ceramic fuel cells (PCFCs) using BaZr0.8-xCexY0.2O3-delta (BZCY) as electrolyte materials were studied for their electrochemical performance and chemical stability. The results showed that increasing Ce4+ content reduced electronic hole conductivity, especially at high temperature. H-2 atmosphere decreased the conductive activation energy of BZCY, while air atmosphere caused electronic leakage. The operation of PCFCs demonstrated that higher Ce4+ content resulted in higher open-circuit voltage and output power density. However, lower Ce4+ content stabilized the materials in CO2 atmosphere.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Editorial Material
Materials Science, Ceramics
Rosa I. Merino, Miguel A. Laguna-Bercero
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2022)
Article
Materials Science, Ceramics
Rosa Merino, Miguel A. Laguna-Bercero, Ruth Lahoz, Angel Larrea, Patricia B. Oliete, Alodia Orera, Jose Pena, Maria Luisa Sanjuan, Daniel Sola
Summary: The article discusses the applications of laser processing in ceramics, including solidification and melting methods. In terms of solidification, the laser-assisted floating zone method is used to produce single crystals and composite materials for material research. In terms of melting, selective laser melting technology shows great potential but is still in the research stage. Additionally, the article introduces the applications of laser processing in subtractive processes such as cutting, drilling, and structuring of ceramics, as well as the effects of laser treatment on the functional performance of components.
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2022)
Review
Biochemistry & Molecular Biology
Carlos Diaz, Maria Luisa Valenzuela, Miguel A. Laguna-Bercero
Summary: Nanomaterials have unique properties that make them highly attractive, and various solution fabrication methods have been developed for synthesizing metal and metal oxides nanoparticles. However, solid-state methods for obtaining nanomaterials are relatively scarce. This review discusses current solid-state methods and introduces a new general method for obtaining nanomaterials. By using macromolecular complexes as precursors, nanoparticles of metals and metallic oxides can be obtained via solid-state pyrolysis. The size and morphology of the nanoparticles depend on the polymer and metal arrangement. The paper also highlights the applications and challenges in this field.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Correction
Chemistry, Physical
S. D. Rojas, N. Espinoza-Villalobos, R. Salazar, N. Escalona, D. Contreras, V. Melin, M. A. Laguna-Bercero, M. Sanchez-Arenillas, E. Vergara, L. Caceres-Jensen, J. Rodriguez-Becerra, L. Barrientos
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Physical
Alodia Orera, Alejandro Betato, Jorge Silva-Trevino, Angel Larrea, Miguel A. Laguna-Bercero
Summary: The study focuses on enhancing the performance of oxygen electrodes by infiltrating metal oxide nanoparticles. Different metal oxides such as cerium oxide, praseodymium or manganese oxide will be examined for their effect on the performance of lanthanum strontium manganite oxygen electrodes. The infiltration of metal oxides significantly improves the current densities in both fuel cell and electrolysis modes in comparison with literature results for microtubular configuration.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Ceramics
Duke P. C. Shih, Ainara Aguadero, Stephen J. Skinner
Summary: This study investigates the effect of A-site monovalent ions (K+ and Li+) on the electrical conductivity of NBT. The results show that partial replacement of Bi3+ with monovalent ions significantly improves the ionic conductivity, possibly due to an increase in oxygen vacancy concentration. The isotope exchange depth profile method confirms that oxygen ions are the main charge carriers.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Electrochemistry
George E. Wilson, Ieuan D. Seymour, Andrea Cavallaro, Stephen J. Skinner, Ainara Aguadero
Summary: The use of perovskite materials for thermochemical energy storage and oxygen separation has been gaining momentum due to their large oxygen exchange capacity and flexibility. This study investigates antimony-substituted strontium cobalt oxides as new materials for thermochemical oxygen separation. The results reveal exceptional redox kinetics and cyclability, with higher oxygen evolution and hindered reduction due to the inductive effect of antimony dopants. The identified material, SrCo0.95Sb0.05O3-delta, shows great potential for oxygen production under temperature-swing reaction configurations.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Sajad Vafaeenezhad, Miguel A. Morales -Zapata, Amir Reza Hanifi, Miguel A. Laguna-Bercero, Partha Sarkar, Thomas H. Etsell
Summary: The electrochemical performance and stability of infiltrated praseodymium nickelate (PNO) as the cathode for solid oxide fuel cell (SOFC) applications was studied. The results showed that PNO infiltrated into gadolinium-doped ceria (GDC) scaffolds improved the oxygen reduction reaction and transformed into a phase with higher electrical conductivity and thermal stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Nicholas J. Williams, Ieuan D. Seymour, Dimitrios Fraggedakis, Stephen J. Skinner
Summary: In this study, the activation losses at solid oxide fuel cell (SOFC) electrodes were investigated by simulating charge transfer using density functional theory (DFT). The electrostatic responses to the electric field were found to correlate with experimental data for different reduction reactions at mixed ionic-electronic conducting (MIEC) electrode surfaces. The study also highlighted the importance of decoupled ion-electron transfer and charged adsorbates on the performance of electrodes under nonequilibrium conditions. The findings have potential implications in energy storage and catalysis.
Article
Multidisciplinary Sciences
Michael High, Clemens F. Patzschke, Liya Zheng, Dewang Zeng, Oriol Gavalda-Diaz, Nan Ding, Ka Ho Horace Chien, Zili Zhang, George E. Wilson, Andrey Berenov, Stephen J. Skinner, Kyra L. Sedransk Campbell, Rui Xiao, Paul S. Fennell, Qilei Song
Summary: This study reports the preparation of durable copper-based redox sorbents using a precursor engineering approach for thermochemical looping processes. The redox sorbents showed enhanced reaction rates, stable oxygen storage capacity, and efficient gas purification over a broad temperature range.
NATURE COMMUNICATIONS
(2022)
Article
Electrochemistry
M. A. Morales-Zapata, M. A. Laguna-Bercero
Summary: High-temperature technologies like solid oxide cells (SOC) are being used for power-to-fuel and vice versa conversion, but durability and compatibility issues at high temperatures are still being addressed. Thus, there is a growing focus on optimizing the physical, mechanical, and chemical properties of SOC materials at lower temperatures. Finding suitable air electrodes remains a significant challenge. Lanthanide nickelates with Ruddlesden-Popper (RP) and perovskite structures are emerging alternatives due to their fast ion and electron transport, as well as flexible oxygen stoichiometry. This review aims to document the research and development status of RP nickelate air electrodes and compare their electrochemical performance.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Jonathan Cavazzani, Andrea Bedon, Giovanni Carollo, Mathilde Rieu, Jean-Paul Viricelle, Antonella Glisenti
Summary: In order to promote the market diffusion of solid oxide fuel cell (SOFC) devices, this study focuses on using fuels other than hydrogen and reducing the working temperature. The main efforts are concentrated on developing a sustainable multifuel anode using LSGF-based nanocomposites. Experiments and measurements were conducted to characterize the performance of the anode in hydrogen and propane. The results show promising power densities and increased open-circuit voltage in both fuels.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Sajad Vafaeenezhad, Amir Reza Hanifi, Miguel A. Laguna-Bercero, Thomas H. Etsell, Partha Sarkar
Summary: This article provides an insight into the parameters affecting the performance and stability of Nickel-yttria stabilized zirconia (Ni-YSZ) cermet, the most commonly used anode in solid oxide fuel cells (SOFCs). The article discusses the impact of parameters such as grain size, Ni to YSZ ratio, porosity volume fraction, pore size and distribution, tortuosity factor, characteristic pathway diameter, and triple phase boundary density on the microstructure of Ni-YSZ. It also highlights the challenges in commercializing SOFC technology due to lack of stability and suggests methods to improve the electrochemical performance and stability of Ni-YSZ anode supported SOFCs.
Article
Chemistry, Physical
Nicholas J. Williams, Ieuan D. Seymour, Robert T. Leah, Aayan Banerjee, Subhasish Mukerjee, Stephen J. Skinner
Summary: Non-equilibrium thermodynamics describes the current-voltage characteristics of electrochemical devices. In this study, the activation overpotential for the metal/mixed ionic-electronic conducting composite electrodes originates at the interface between the material and gas. The driving force for coupled ion-electron transfer is held at the interface, and the rate of transfer scales with the availability of free sites on the metallic surface.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Juan F. Basbus, Mauricio D. Arce, Jose A. Alonso, Miguel A. Gonzalez, Gabriel J. Cuello, Maria T. Fernandez-Diaz, Zijie Sha, Stephen J. Skinner, Liliana Mogni, Adriana C. Serquis
Summary: Understanding the protonic defect transport mechanism in Ba(Ce,Zr)O-3 perovskite oxides and defining the appropriate temperature range are important for material design and application. Structural features, lattice distortions, and proton diffusion play key roles in protonic conduction.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
