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In-situ fracture behavior of near-stoichiometric SiC fibers exposed to high temperatures in air 近化学计量SiC纤维暴露于高温空气中的原位断裂行为
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-19 DOI: 10.1016/j.jeurceramsoc.2026.118157
Hyuk Jun Lee , Su Yeon Kim , Tae-Hyeon Kim , Kwang Youn Cho , Young-Keun Jeong , Young Jun Joo
{"title":"In-situ fracture behavior of near-stoichiometric SiC fibers exposed to high temperatures in air","authors":"Hyuk Jun Lee ,&nbsp;Su Yeon Kim ,&nbsp;Tae-Hyeon Kim ,&nbsp;Kwang Youn Cho ,&nbsp;Young-Keun Jeong ,&nbsp;Young Jun Joo","doi":"10.1016/j.jeurceramsoc.2026.118157","DOIUrl":"10.1016/j.jeurceramsoc.2026.118157","url":null,"abstract":"<div><div>Silicon carbide (SiC) fibers with chemical resistance, thermal stability, and excellent mechanical properties are a reinforcing material of ceramic matrix composites(CMCs) for extreme environments. The high-temperature tensile strength of SiC fibers is typically measured at room temperature after exposure to high temperatures. However, in this study, the high-temperature tensile strength was investigated using <em>in-situ</em> measurements during exposure to temperatures between 1000 and 1500 ℃. The near-stoichiometric SiC fiber exhibited fracture behaviors in the order of thermal expansion, plastic deformation, and ductile deformation when <em>in-situ</em> measured for tensile strength during rapid exposure to high temperatures. In addition, under <em>in-situ</em> tensile stress at high temperatures, both surface and internal residual carbon act as oxidation sites, leading to a rapid decrease in tensile strength and promoting greater ductile deformation. This correlation between residual carbon and ductile deformation was consistent with the strains measured for SiC fibers with various C/Si controls.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118157"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in MOF-derived porous carbons, oxides, and hybrids for water splitting and beyond mof衍生多孔碳、氧化物和杂化物在水分解及其他领域的研究进展
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-19 DOI: 10.1016/j.jeurceramsoc.2026.118156
Mathivanan Durai , Mani Durai , Elangovan Erusappan , Sivalingam Gopi , Kyusik Yun
{"title":"Advances in MOF-derived porous carbons, oxides, and hybrids for water splitting and beyond","authors":"Mathivanan Durai ,&nbsp;Mani Durai ,&nbsp;Elangovan Erusappan ,&nbsp;Sivalingam Gopi ,&nbsp;Kyusik Yun","doi":"10.1016/j.jeurceramsoc.2026.118156","DOIUrl":"10.1016/j.jeurceramsoc.2026.118156","url":null,"abstract":"<div><div>Metal–organic frameworks (MOFs) and their derivatives have emerged as powerful precursors for designing efficient electrocatalysts for water splitting due to their tunable porosity, compositional flexibility, and high density of accessible metal sites. However, the poor electrical conductivity and limited stability of pristine MOFs restrict their direct electrocatalytic application. Recent advances demonstrate that controlled derivatization and hybridization particularly defect engineering, heterointerface formation, and coupling with conductive matrices can fundamentally transform MOFs into highly active and robust bifunctional catalysts. MOF-derived hybrids incorporating transition-metal compounds embedded in conductive carbon architectures exhibit accelerated charge transfer, optimized adsorption energetics, and enhanced structural stability across acidic, neutral, and alkaline media. As a result, many systems deliver hydrogen evolution reaction overpotentials below 70 mV and oxygen evolution reaction overpotentials around 230–250 mV at 10 mA cm<sup>−2</sup>, approaching or rivaling noble-metal benchmarks, while maintaining long-term durability. This review critically summarizes recent progress in MOF-derived electrocatalysts, with an emphasis on structure property relationships, interface modulation, and synergistic hybrid designs that govern catalytic performance. Finally, key challenges and future opportunities are discussed to guide the rational development of next-generation MOF-derived materials for scalable and sustainable water-splitting technologies.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118156"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plasma ablation behavior of Yb2O3 modified C/C-Hf1-xZrxC composites Yb2O3改性C/C- hf1 - xzrxc复合材料的等离子体烧蚀行为
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-07 DOI: 10.1016/j.jeurceramsoc.2026.118131
Yupeng Chang , Qinchuan He , Yufei Xiong , Yiqun Wang , Congmin Fan , Xuemin Yin
{"title":"Plasma ablation behavior of Yb2O3 modified C/C-Hf1-xZrxC composites","authors":"Yupeng Chang ,&nbsp;Qinchuan He ,&nbsp;Yufei Xiong ,&nbsp;Yiqun Wang ,&nbsp;Congmin Fan ,&nbsp;Xuemin Yin","doi":"10.1016/j.jeurceramsoc.2026.118131","DOIUrl":"10.1016/j.jeurceramsoc.2026.118131","url":null,"abstract":"<div><div>C/C-Hf<sub>1-x</sub>Zr<sub>x</sub>C composites were fabricated via the precursor infiltration and pyrolysis (PIP) process, with varying Yb<sub>2</sub>O<sub>3</sub> concentrations. In this study, the ablation behaviour of modified ceramic composites in a plasma flame was systematically investigated, and their corresponding. Through analysis of the post-ablation morphology and microstructure, the corresponding microstructural evolution was analysed. During the ablation test, the modified components were preferentially oxidized to generate a Hf-Zr-Yb-O oxide barrier layer, which effectively mitigated the thermal oxidation damage. Additionally, the addition of Yb<sub>2</sub>O<sub>3</sub> stabilizes the high temperature phase of HfO<sub>2</sub>/ZrO<sub>2</sub> and enhances the integrity of the oxide layer by minimizing spalling caused by structural stress. At high temperatures, Yb<sub>2</sub>O<sub>3</sub> reacts with HfO<sub>2</sub>/ZrO<sub>2</sub> to form the refractory phases Yb<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> and Yb<sub>2</sub>Hf<sub>2</sub>O<sub>7</sub>. These newly formed phases demonstrate excellent thermal stability, surpassing that of HfO<sub>2</sub>/ZrO<sub>2</sub>, thereby promoting improved ablation performance through both physical shielding and chemical stabilization effects.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118131"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
La3 + modified BaBi4Ti4O15 bismuth layer-structured ceramics toward high energy storage density and efficiency La3 +改性BaBi4Ti4O15铋层结构陶瓷朝着高能量存储密度和效率的方向发展
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118170
Fanfei Xu , Qian Xiong , Li Ma , Chengjian Huang , Zhenyong Cen , Rui Huang , Sasipohn Prasertpalichat , Nengneng Luo
{"title":"La3 + modified BaBi4Ti4O15 bismuth layer-structured ceramics toward high energy storage density and efficiency","authors":"Fanfei Xu ,&nbsp;Qian Xiong ,&nbsp;Li Ma ,&nbsp;Chengjian Huang ,&nbsp;Zhenyong Cen ,&nbsp;Rui Huang ,&nbsp;Sasipohn Prasertpalichat ,&nbsp;Nengneng Luo","doi":"10.1016/j.jeurceramsoc.2026.118170","DOIUrl":"10.1016/j.jeurceramsoc.2026.118170","url":null,"abstract":"<div><div>Owing to alternate (Bi<sub>2</sub>O<sub>2</sub>)<sup>2+</sup> layers and perovskite blocks structures, BaBi<sub>4</sub>Ti<sub>4</sub>O<sub>15</sub> ferroelectric ceramic exhibits high breakdown strengthen, making it promising in energy storage applications. However, the substantial hysteresis and remnant polarization under electric field impairs its energy storage performance. In this work, rare-earth ion La<sup>3+</sup> was added into BaBi<sub>4</sub>Ti<sub>4</sub>O<sub>15</sub> to form a new solid solution BaBi<sub>4-<em>x</em></sub>La<sub><em>x</em></sub>Ti<sub>4</sub>O<sub>15</sub> (BBLT<em>x</em>) to address the problem and simultaneously optimize the energy storage performance. Interestingly, the BBLT<em>x</em> ceramics demonstrated improved relaxor characteristic and reduced grain size, which significantly reduced the polarization hysteresis while increased the breakdown strength. Notably, the BBLT0.9 ceramic showcased high recoverable energy density of 6.7 J/cm<sup>3</sup> and ultrahigh efficiency up to 93.5 %, under an applied electric field of 820 kV/cm. This work highlights the significant potential of BBT-based lead-free ceramics for advanced energy storage applications and provides novel insights into performance optimization strategies through functional modification.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118170"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A HfSiO4-based coating with stronger oxidation resistance defending C/C composites at 1773 K and 1973 K in air 一种在空气中1773 K和1973 K下具有较强抗氧化性能的hfsio4基涂层
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-27 DOI: 10.1016/j.jeurceramsoc.2026.118180
Xiaofei Zhu , Jian Zhang , Ruicong Chen , In-Ho Jung , Yulei Zhang
{"title":"A HfSiO4-based coating with stronger oxidation resistance defending C/C composites at 1773 K and 1973 K in air","authors":"Xiaofei Zhu ,&nbsp;Jian Zhang ,&nbsp;Ruicong Chen ,&nbsp;In-Ho Jung ,&nbsp;Yulei Zhang","doi":"10.1016/j.jeurceramsoc.2026.118180","DOIUrl":"10.1016/j.jeurceramsoc.2026.118180","url":null,"abstract":"<div><div>The high-temperature oxidation of Carbon/carbon (C/C) composites limits their application as hot-end structural materials in the aerospace industry. To solve this problem, a HfSiO<sub>4</sub>-based coating with strong oxygen blocking ability on the C/C composites was fabricated by a compound method of slurry brushing and in-situ oxidation sintering. The C/C composites were protected by the coating for 2257 h at 1773 K, 121 h at 1973 K in air, with a mass loss of about 0.50 wt%, respectively. Such good performance was attributed to the Hf-Si-O oxygen barrier layer with abundant and uniformly distributed HfSiO<sub>4</sub> particles (Volume accounting for over 65 %). The HfSiO<sub>4</sub> particles could reduce the volatile mass of the SiO<sub>2</sub> glass, and relieve the difference of coefficient of thermal expansion (CTE) between the SiC inner coating and SiO<sub>2</sub> in the outer coating. More importantly, the oxygen diffusion resistance of the Hf-Si-O layer with HfSiO<sub>4</sub> as the main phase was significantly enhanced, providing a basis for optimizing the composition of oxidation resistance coatings at 1973 K and above in air.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118180"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid direct ink writing of silicone-based emulsions for advanced Biosilicate® scaffolds 用于高级生物硅酸盐支架的硅基乳液的混合直接墨水书写
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-21 DOI: 10.1016/j.jeurceramsoc.2025.118105
Valeria Diamanti, Hamada Elsayed, Enrico Bernardo
{"title":"Hybrid direct ink writing of silicone-based emulsions for advanced Biosilicate® scaffolds","authors":"Valeria Diamanti,&nbsp;Hamada Elsayed,&nbsp;Enrico Bernardo","doi":"10.1016/j.jeurceramsoc.2025.118105","DOIUrl":"10.1016/j.jeurceramsoc.2025.118105","url":null,"abstract":"<div><div>Preceramic polymer emulsions have recently shown great potential in the production of ceramics featuring a glassy matrix owing to their ability to achieve a high degree of homogenization of fillers, here introduced as aqueous solutions. The present study seeks to extend this strategy to the class of glass-ceramic materials, specifically targeting the Biosilicate® composition. Silicone blends are successfully developed and combined with Direct Ink Writing and thermal treatment in air to fabricate highly porous biosilicate-like scaffolds (up to 94 % total porosity) with outstanding strength-to-density ratios. Firing under nitrogen atmosphere is also explored focusing on its effects on the crystalline phase assemblage, morphology, and physical properties of the scaffolds. Lastly, two post-processing strategies, involving bioresin coating and infiltration respectively, are investigated to mechanically reinforce the air-synthesized polymer-derived scaffolds.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118105"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A simple method for selecting suitable sintering aids for LZP-based ceramic electrolytes to improve lithium-ion conductivity 一种简单的方法选择合适的助烧结剂,以提高lzp基陶瓷电解质的锂离子电导率
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-29 DOI: 10.1016/j.jeurceramsoc.2026.118187
Xingrui Pu , Xing Cheng , Ruize Yang , Chengzhi Wei , Xinhang Chu , Xiaohong Zhu
{"title":"A simple method for selecting suitable sintering aids for LZP-based ceramic electrolytes to improve lithium-ion conductivity","authors":"Xingrui Pu ,&nbsp;Xing Cheng ,&nbsp;Ruize Yang ,&nbsp;Chengzhi Wei ,&nbsp;Xinhang Chu ,&nbsp;Xiaohong Zhu","doi":"10.1016/j.jeurceramsoc.2026.118187","DOIUrl":"10.1016/j.jeurceramsoc.2026.118187","url":null,"abstract":"<div><div>The large grain boundary resistance restricts conductivity of LiZr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> (LZP) ceramic electrolyte. This work presents an effective and simple screening technique for quickly screening out appropriate sintering aids to overcome this disadvantage. Firstly, Bi<sub>2</sub>O<sub>3</sub> (BO), Li<sub>3</sub>BO<sub>3</sub> (LBO) and LiBF<sub>4</sub> (LBF) were selected from fourteen candidates as sintering aids for Li<sub>0.94</sub>Zr<sub>1.94</sub>Ta<sub>0.06</sub>(PO<sub>4</sub>)<sub>3</sub> (LZTP) electrolyte. The correlations between phase, relative density, microstructure, composition and conductivity are discussed. The total conductivity of LZTP-0.5 wt%LBO is 8.60 × 10<sup>−5</sup> S cm<sup>−1</sup>. LZTP-2wt%BO reaches the highest conductivity of 9.24 × 10<sup>−5</sup> S cm<sup>−1</sup>, which is approximately 1.5 times that of pure LZTP. The reason for the total conductivity enhancement is mainly attributed to the enhancement of grain boundary transport. However, compared to BO and LBO, the LBF sintering aid exhibited negative effects on conductivity. The lithium symmetrical cell equipped with LZTP-2wt%BO exhibits a long cycle stability for 900 h. This screening strategy can provide reference and inspiration for the selection of sintering aids for other LZP-based ceramic electrolytes.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118187"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
3D analysis of abnormal grain growth in calcia doped alumina in the presence of large pores 钙掺杂氧化铝中存在大孔隙时异常晶粒生长的三维分析
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-24 DOI: 10.1016/j.jeurceramsoc.2026.118173
Daniel P. DeLellis , Yi Wang , Vivekanand Muralikrishnan , Joel B. Harley , Michael R. Tonks , Amanda R. Krause
{"title":"3D analysis of abnormal grain growth in calcia doped alumina in the presence of large pores","authors":"Daniel P. DeLellis ,&nbsp;Yi Wang ,&nbsp;Vivekanand Muralikrishnan ,&nbsp;Joel B. Harley ,&nbsp;Michael R. Tonks ,&nbsp;Amanda R. Krause","doi":"10.1016/j.jeurceramsoc.2026.118173","DOIUrl":"10.1016/j.jeurceramsoc.2026.118173","url":null,"abstract":"<div><div>Abnormal grain growth has been previously found to increase with the inclusion of large pores (∼60 µm in diameter) in 80 ppm calcium doped alumina. However, the two-dimensional analysis could not accurately describe the proximity of the abnormal grains and pores to establish a correlation. This study uses laboratory-based diffraction contrast tomography and x-ray computed tomography to spatially map the pores and abnormal grains in 3D. A preference towards the formation of abnormal grains near large pores is found when compared to all potential sites. This finding supports that the pores may be a nucleation site for complexion transitions that promote abnormal grain growth. The growth of the abnormal grains in a subsequent heat treatment at 1600°C for 16 hrs was also studied. The elongation along the principal axes is similar for both small and large grains, again supporting that abnormal grain growth was facilitated by a complexion transition.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118173"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tensile and low-cycle fatigue behaviors of a SiC/SiC composite at elevated temperatures in air SiC/SiC复合材料在高温空气中的拉伸和低周疲劳行为
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-21 DOI: 10.1016/j.jeurceramsoc.2026.118154
R.T. Bhatt , D. Kiser
{"title":"Tensile and low-cycle fatigue behaviors of a SiC/SiC composite at elevated temperatures in air","authors":"R.T. Bhatt ,&nbsp;D. Kiser","doi":"10.1016/j.jeurceramsoc.2026.118154","DOIUrl":"10.1016/j.jeurceramsoc.2026.118154","url":null,"abstract":"<div><div>Isothermal tensile and low-cycle fatigue (LCF) tests were conducted on a two-dimensional 2D woven SiC-fiber-reinforced SiC-matrix (SiC/SiC) composite with Sylramic™-iBN SiC fibers at 1200, 1300, and 1400 °C in air. The composites were fabricated by polymer infiltration and pyrolysis (PIP), which yielded a crystalline (SiC+Si<sub>3</sub>N<sub>4</sub>) matrix. The tension-tension LCF tests were performed with peak stresses ranging from 103 to 173 MPa at an R-ratio of 0.05 and a frequency of 0.333 Hz for up to 2.71 × 10<sup>5</sup> runout cycles or failure. The specimens that survived runouts were tensile tested at the fatigue testing temperature, and the results were compared with the baseline in-plane tensile properties of as-fabricated composites. Prior fatigue testing caused reduction in both primary elastic modulus and ultimate tensile strength. Fracture surfaces and cross-sectional microstructures of the specimens that failed during tensile and fatigue tests were analyzed to determine failure modes and damage mechanisms.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118154"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering phase distribution in LSCF-CGO cathodes for enhanced electrochemical performance in SOFCs 提高sofc电化学性能的LSCF-CGO阴极的工程相分布
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-23 DOI: 10.1016/j.jeurceramsoc.2025.118111
Lucía dos Santos-Gómez , Abraham Sánchez-Caballero , José Manuel Porras-Vázquez , Javier Zamudio-García , Enrique R. Losilla , David Marrero-López
{"title":"Engineering phase distribution in LSCF-CGO cathodes for enhanced electrochemical performance in SOFCs","authors":"Lucía dos Santos-Gómez ,&nbsp;Abraham Sánchez-Caballero ,&nbsp;José Manuel Porras-Vázquez ,&nbsp;Javier Zamudio-García ,&nbsp;Enrique R. Losilla ,&nbsp;David Marrero-López","doi":"10.1016/j.jeurceramsoc.2025.118111","DOIUrl":"10.1016/j.jeurceramsoc.2025.118111","url":null,"abstract":"<div><div>Composite cathodes combining a mixed ionic–electronic conductor with an oxygen-ion conductor are key for intermediate-temperature solid oxide fuel cells (IT-SOFCs), as they increase the electrochemically active area and mitigate thermal expansion mismatch with the electrolyte. However, conventional fabrication methods, such as simple powder mixing, often yield inhomogeneous phase distributions and involve multiple processing steps that hinder scalability. In this work, La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3-δ</sub> (LSCF) - Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> (CGO) composite cathodes are prepared by different routes, including conventional powder mixing, LSCF powders coated with CGO nanoparticles, CGO powders coated with LSCF nanoparticles and a co-synthetized nanocomposite obtained from a single precursor solution via the freeze-drying method. The electrodes are systematically characterized to correlate phase distribution and microstructure with electrochemical performance. The co-synthesized nanocomposite exhibits a significantly reduced particle size of 20 nm at 800 ºC, resulting in a polarization resistance of 0.08 Ω·cm<sup>2</sup> at 700 ºC, compared to 0.22 Ω·cm<sup>2</sup> for the powder-mixed electrode. Correspondingly, the power density of the cell employing the nanosized LSCF–CGO cathode increased by 37 % compared to the conventional electrode. These results demonstrate that freeze-drying provides a simple, scalable and effective synthesis route for high-performance LSCF–CGO nanocomposite cathodes, offering significant advantages over conventional preparation methods for IT-SOFC applications.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118111"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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