Article
Chemistry, Physical
Wenlong Huang, Yushi Ding, Ying Li, Zezhong Wang
Summary: The new double perovskite-type proton conductor BBT30 exhibits high conductivity at high temperatures, with protonic conduction being predominant. It also has a higher proton transport number in atmospheric conditions compared to other double perovskite-type proton conductors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Anastasia V. Egorova, Ksenia G. Belova, Irina E. Animitsa
Summary: The LaIn1-xZnxO3-1/2x samples were synthesized for the first time via solid-state reaction method. The effect of Zn2+ doping on the structure, water uptake and electrical properties of LaInO3 was investigated. The results show that Zn2+ is a good alternative to alkaline earth metals and improves the conductivity of the ceramics. The phase exhibits oxygen-ionic transport at temperatures below 500°C and protonic transport at temperatures below 600°C.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
Zezhong Wang, Ying Li, Wenlong Huang, Yushi Ding
Summary: Ba3Ba1+xTa2-xO9-delta oxides demonstrate excellent proton conductivity within a certain temperature range.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Wenlong Huang, Yushi Ding, Ying Li, Zezhong Wang
Summary: In this study, the excellent proton conductivity of the complex perovskite BST40 was investigated using brick-layer model and defect equilibria model. The results showed that BST40 exhibits higher conductivity through grain boundaries at temperatures above 500 degrees C, with higher standard molar hydration enthalpy. Additionally, the activation energy for proton transport in BST40 was found to be higher than that of grain interior, confirming its superior proton conductivity compared to other similar perovskite-type materials.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Inna A. Zvonareva, Liana R. Tarutina, Gennady K. Vdovin, Julia G. Lyagaeva, Albert R. Akhmadeev, Dmitry A. Medvedev
Summary: The study focuses on the design of proton-conducting electrolytes with high ionic conductivity and chemical stability by synthesizing Sn-substituted BaCeO3 materials. The results show that Sn-doping deteriorates the conductivity of ceramic materials but improves their stability with respect to interaction with H2O and CO2. This suggests that co-doping BaCeO3 with tin and ytterbium is a promising approach for achieving the desired balance between performance, efficiency, and long-term stability in solid oxide fuel cells.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Ksenia Belova, Anastasia Egorova, Svetlana Pachina, Irina Animitsa
Summary: This paper demonstrates the possibility of creating oxygen deficiency in perovskites by introducing cations with different charges into the crystal structure. The novel oxygen-deficient perovskite shows reversible water uptake and the total conductivity is affected by the free lattice volume.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Mohamed Ben Bechir, Abdelkareem Almeshal, Mohamed Houcine Dhaou
Summary: The dielectric properties of CH3NH3PbBr3 single crystal were studied, and a giant dielectric constant was obtained at low frequencies due to the induced polarization of the electrodes caused by ion migration and the intrinsic polarization in the hybrid network. Phenomenological approaches were used to analyze the conductivity and dielectric functions under different temperature and frequency conditions.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
Yong Youn, Basharat Hussain, Abid Ullah, In Jun Hwang, Jiweon Shin, Jong-Eun Hong, Dong Woo Joh, Seung-Bok Lee, Rak-Hyun Song, Seok-Joo Park, Tae Woo Kim, Yoonseok Choi, Tak-Hyoung Lim, Hye-Sung Kim
Summary: Hexagonal perovskite-related oxides have attracted significant attention for their potential applications in electrochemical devices. This study reveals the anisotropic characteristics of proton conduction behavior in a Ba5Er2Al2ZrO13 (BEAZ) hexagonal perovskite electrolyte-supported cell. By controlling the orientation of the grains in the BEAZ thin film, the researchers demonstrate that proton migration is more favorable in the lateral direction than in the vertical direction. Density functional theory calculations and ab initio molecular dynamics simulations suggest that anisotropic proton migration is preferred through the perovskite-like layer.
CHEMISTRY OF MATERIALS
(2023)
Article
Polymer Science
Osung Kwon, JaeHyoung Park
Summary: This study used electrostatic force microscopy (EFM) to investigate the impact of ionic channel distribution on the proton conductivity of Nafion-sulfonated silica (SSA) composite membranes. The results showed that Nafion-SSA had twice the average local ionic channel density compared to pristine Nafion, and the distribution of the ionic channel density was non-uniform. Additionally, local agglomerations were observed in approximately 10% of the scanned area, attributed to the presence of SSA. These findings are significant for the quantitative assessment of proton exchange membranes (PEMs).
Article
Chemistry, Physical
N. Tarasova, A. Galisheva, I. Animitsa
Summary: The new complex oxides Ba1.1La0.9In0.95Ti0.05O3.98 show a significant increase in protonic conductivity through doping, making them promising for practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Joseph Ring, Andreas Nenning, Juergen Fleig
Summary: LLTO is a promising material in Li ion battery application due to its stable ambient and high ionic conductivity. Under high Li chemical potential, LLTO undergoes a transition from an electrolyte to a high rate capable electrode material. However, the exact voltage of this transition and the electronic conductivity of reduced LLTO were unknown. In this study, we investigated the thermodynamics of lithium insertion and the ion and electron conductivity of reduced LLTO, and proposed a defect chemical model that fits well with the experimental data.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Biochemistry & Molecular Biology
Laszlo Kook, Piroska Lajtai-Szabo, Peter Bakonyi, Katalin Belafi-Bako, Nandor Nemestothy
Summary: The study found that hydrophobic ionic liquids (IL) in the form of supported ionic liquid membranes (SILM) have superior proton and ion transfer properties in microbial fuel cells (MFC), with IL containing [PF6](-) anion potentially reducing ion transfer losses in MFCs and demonstrating comparable conductivity at low electrolyte concentrations.
Article
Electrochemistry
Alessandro Chiara, Giovanna Canu, Alessandro Longo, Candida Pipitone, Antonino Martorana, Francesco Giannici
Summary: Research found limited solid-state compatibility between calcium-doped lanthanum niobate and three perovskite cathode materials, with poor stability at high temperatures.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Ceramics
Yazhou Kong, Youfang Liu, Guang Hu
Summary: A perovskite-structured sodium ion conductor, Na0.25La0.25NbO3 (NLNO), was developed and studied for its microstructure, phase structure, density, and sodium ionic conductivity. Higher sintering temperature leads to improved conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Xiaojuan Lu, Xinyu Li, Mingyang Duan, Jiankang Hai, Songtao Liu
Summary: Perovskite-type Li0.33La0.56TiO3 (LLTO) was improved with ionic liquid [BMIM][BF4] through attrition milling. The microstructure, crystallinity, and lithium-ion conductivity of the samples were measured using SEM, XRD, and IS. The total ionic conductivities of LLTO + x wt% [BMIM][BF4] samples increased with the addition of [BMIM][BF4], reaching a maximum conductivity of 4.71 x 10-4 S/cm at x = 12.5 wt%. The enhancement was attributed to the bridging role of the ionic liquid among grains, supported by the low activation energy and SEM observation. The hybrid material with mixed conductivity and good stability can improve the interface contact in all-solid-state lithium-ion batteries.
JOURNAL OF RARE EARTHS
(2023)
Article
Materials Science, Ceramics
George N. Starostin, Inna A. Zvonareva, Dmitry A. Medvedev, Sergey Zvonarev
Summary: This study synthesized ZnAl2O4-based ceramic materials through two different synthesis methods and investigated their luminescent properties depending on morphology. The results showed that ceramic samples obtained using the solid-state synthesis method were more defective in morphology and exhibited higher thermoluminescence sensitivity. The optimal samples exhibited a linear thermoluminescence dependence over a wide absorbed dose range, indicating their potential as ionizing irradiation detectors.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
N. Tarasova, A. Galisheva, I. Animitsa, D. Korona, E. Abakumova, D. Medvedev
Summary: This study confirmed that the acceptor (calcium) and donor (indium) doping can significantly improve the properties of layered perovskite BaLa2In2O7 and increase the oxygen-ionic conductivity. It provides a new approach for the design of novel oxygen-ionic conductors.
CERAMICS INTERNATIONAL
(2022)
Review
Materials Science, Ceramics
Inna A. Zvonareva, Dmitry A. Medvedev
Summary: Solid oxide fuel cells are efficient energy conversion devices, but the traditional yttria-stabilized zirconia materials used for electrolytes require high temperatures. This study analyzes the potential of barium stannate as a proton-conducting electrolyte material and confirms its suitability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Electrochemistry
Anna V. Kasyanova, Julia G. Lyagaeva, Gennady K. Vdovin, Anna A. Murashkina, Dmitry A. Medvedev
Summary: The synthesis and comprehensive study of acceptor-doped lanthanum ytterbates were successfully conducted. These materials showed high chemical stability, good conductivity, and promising proton-conducting properties, making them suitable for various electrochemical devices, such as solid oxide fuel cells.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Artem P. Tarutin, Nikolai A. Danilov, Andrey A. Kalinin, Anna A. Murashkina, Dmitry A. Medvedev
Summary: The thermomechanical and chemical properties of Pr2NiO4+a-based electrode materials were optimized via Ba-doping, reducing their chemical interaction with Ba(Ce,Zr)O3-based electrolytes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yuanyan Luo, Wenhua Lou, Huiyan Feng, Zhihang Liu, Qiuyan Chen, Guizhen Liao, Xiaoting Huang, Panagiotis Tsiakaras, Peikang Shen
Summary: Ultra-small Pt-based catalysts were synthesized by a Pd seed-inducing-growth route, showing specific effects for enhancing the oxygen reduction reaction (ORR) and improving Pt utilization.
Review
Chemistry, Physical
Elena Gorbova, Georgia Balkourani, Costas Molochas, Dimitrios Sidiropoulos, Angeliki Brouzgou, Anatoly Demin, Panagiotis Tsiakaras
Summary: Hydrogen sensors, especially those operating at high temperatures, are crucial for the safe and widespread use of hydrogen as fuel in the emerging hydrogen economy. This review focuses on hydrogen sensors based on solid oxide electrolytes and discusses their configuration, principle of operation, and application.
Review
Biochemistry & Molecular Biology
Syed Shoaib Ahmad Shah, Naseem Ahmad Khan, Muhammad Imran, Muhammad Rashid, Muhammad Khurram Tufail, Aziz ur Rehman, Georgia Balkourani, Manzar Sohail, Tayyaba Najam, Panagiotis Tsiakaras
Summary: The hydrogen evolution reaction (HER) is a promising technology for delivering clean energy using renewable sources. The use of transition metal tellurides (TMTs) and transition metal phosphides (TMPs) as electrocatalysts has emerged as a highly efficient, low-cost, and stable alternative to platinum-based catalysts. This review focuses on the progress made in the past decade, providing a detailed summary of their development and offering guidelines for the design of new electrocatalysts for energy conversion and storage technologies.
Article
Chemistry, Physical
Inna A. Zvonareva, George N. Starostin, Mariam T. Akopian, Gennady K. Vdovin, Xian-Zhu Fu, Dmitry A. Medvedev
Summary: The search for new oxide materials with pronounced proton transport is important for efficient energy conversion processes. Y-doped barium stannates exhibit varying transport properties depending on the doping degree, with weakly doped stannates being electron conductors and heavily doped stannates showing higher ionic conductivity and wider electrolytic domain boundary, making them potential electrolytes for protonic ceramic fuel and electrolysis cells.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Ksenia Belova, Anastasia Egorova, Svetlana Pachina, Irina Animitsa, Dmitry Medvedev
Summary: Oxygen-ionic and proton-conducting oxides, including La2ZnNdO5.5 and its Ca-doped derivatives, were synthesized. These materials were characterized for their phase composition, lattice parameters, and hydration capability. The conductivities of the samples were measured in dry and wet air, showing a significant increase in conductivity due to oxygen vacancies during acceptor doping. The Ca-doped phases also exhibited proton-conducting properties.
Article
Materials Science, Ceramics
Inna A. Zvonareva, George N. Starostin, Mariam T. Akopian, Anna A. Murashkina, Xian-Zhu Fu, Dmitry A. Medvedev
Summary: BaSnO3 is a new family of proton-conducting materials with potential high-temperature applications. The synthesis and characterization of BaSn1-xYxO3-δ (0 < x < 0.4) phases were conducted to understand the variations of chemical and thermal strains depending on composition. The results show that the importance of chemical expansion/contraction effects increases with increasing Y-content. These findings provide valuable data for the application of these materials in protonic ceramic devices.
CERAMICS INTERNATIONAL
(2023)
Review
Chemistry, Physical
Nikolai A. Danilov, Inna A. Starostina, George N. Starostin, Anna V. Kasyanova, Dmitry A. Medvedev, Zongping Shao
Summary: Proton-conducting oxide materials have protonic defects in their crystal structure due to their interaction with hydrogen-containing atmospheres, resulting in superior ionic conductivity. Barium cerate, barium zirconate, and barium cerate-zirconate are widely studied as proton-conducting electrolyte materials. Y and Yb co-doped Ba(Ce,Zr)O-3 is considered one of the most promising systems.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)