材料科学最新文献

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Tailoring breakdown behaviour in BST-xMgO ceramics for energy storage applications 用于储能应用的BST-xMgO陶瓷的定制击穿行为
IF 6.3 2区 材料科学
Journal of Alloys and Compounds Pub Date : 2025-08-04 DOI: 10.1016/j.jallcom.2025.182737
Aman Malasi, Nibedan Nanda, Sujata Swain, Pawan Kumar
{"title":"Tailoring breakdown behaviour in BST-xMgO ceramics for energy storage applications","authors":"Aman Malasi,&nbsp;Nibedan Nanda,&nbsp;Sujata Swain,&nbsp;Pawan Kumar","doi":"10.1016/j.jallcom.2025.182737","DOIUrl":"10.1016/j.jallcom.2025.182737","url":null,"abstract":"<div><div>In this study, Ba₀.₆₅Sr₀.₃₅TiO₃–xMgO ceramics with x = 0, 1, 3, and 5 wt% (abbreviated as BST, BST-1M, BST-3M, and BST-5M, respectively) were successfully synthesized via the conventional solid-state route. XRD study confirmed the phase purity with tetragonal perovskite structure with space group P4mm, while FESEM study revealed the enhanced grain growth and reduced porosity in BST-1M and BST-3M samples, which was found to be in correlation with density measurement, where density increased from 5.35 gm/cc to 5.40 gm/cc in BST-1M. Dielectric study showed good thermal stability upto 45° C under TCC performance, whereas Yamada model provided the best dielectric fitting to present experimental data. Ferroelectric analysis confirmed improved polarization and breakdown strength with the increase of MgO addition, which was attributed to MgO-induced grain enhancement and increased bandgap. Notably, BST-1M ceramics exhibited high total energy density (∼3.1 J/cm³), and BST-3M ceramics exhibited excellent recoverable energy (W <sub>rec</sub>∼1.28 J/cm³) with ∼73.56 % efficiency at E<sub>b</sub> ∼ 190 kV/cm. Breakdown strength (E<sub>b</sub>) increased from ∼ 120 kV/cm ( BST) to ∼ 220 kV/cm (BST-5M). Optimum W<sub>rec</sub>/E<sub>b</sub> ratio of BST-1M, BST-3M ceramics further demonstrated their superior performance at lower fields, making them suitable for embedded capacitors, flexible electronics, and low-power tunable RF devices.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182737"},"PeriodicalIF":6.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766658","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
Fabrication of Ti2AlN/TC4 interpenetrating phase composites and their corrosion resistance in marine environment Ti2AlN/TC4互穿相复合材料的制备及其耐海洋腐蚀性能
IF 6.9 2区 材料科学
Applied Surface Science Pub Date : 2025-08-04 DOI: 10.1016/j.apsusc.2025.164226
Yage Meng, Yang Zhou, Chong Wu, Zhihao Sheng, Zhenying Huang
{"title":"Fabrication of Ti2AlN/TC4 interpenetrating phase composites and their corrosion resistance in marine environment","authors":"Yage Meng,&nbsp;Yang Zhou,&nbsp;Chong Wu,&nbsp;Zhihao Sheng,&nbsp;Zhenying Huang","doi":"10.1016/j.apsusc.2025.164226","DOIUrl":"10.1016/j.apsusc.2025.164226","url":null,"abstract":"<div><div>Ti<sub>2</sub>AlN/TC4 interpenetrating phase composites (Ti<sub>2</sub>AlN/TC4 IPCs) were successfully fabricated via hybrid SLM 3D printing and hot-pressing techniques. The electrochemical behavior of Ti<sub>2</sub>AlN/TC4 IPCs in 3.5 wt% NaCl solution was studied. The results showed that the surface of IPCs with network structure Ti<sub>2</sub>AlN reinforcement exhibited remarkably lower current density, higher impedance and fewer passive film defects compared to the TC4 alloy. The higher content and optimized ratio of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> across the film depth made the excellent chemical stability of TiO<sub>2</sub> fully combined with the better sealing of Al<sub>2</sub>O<sub>3</sub>, which improved the stability and compactness of surface passive film of the network structure IPCs. Furthermore, the abundant Ti(OH)<sub>x</sub> on the film surface contribute additional stabilization to the passive film.The continuous Ti<sub>2</sub>AlN network physically blocked the diffusion of corrosion while the optimized passivation capability of transition layer chemically stabilized vulnerable metal/ceramic interface. This dual protection mechanism, combining physical barrier effects and electrochemical passivation, fundamentally accounted for the superior corrosion resistance of the Ti<sub>2</sub>AlN/TC4 IPCs.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"712 ","pages":"Article 164226"},"PeriodicalIF":6.9,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766731","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
Comparative study of (NiFe2O4) photocatalysts for oxytetracycline degradation: Effect of synthesis method on performance stability (NiFe2O4)光催化剂降解土霉素的比较研究:合成方法对性能稳定性的影响
IF 4.7 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-08-04 DOI: 10.1016/j.matchemphys.2025.131242
J. Vargas-Bustamante , E. Benítez-Flores , Juan C. Durán-Álvarez , Silvana Cortés-Lagunes , E.P. Arévalo-López , J. Pilo , J.E. Antonio , R. Escamilla , M. Romero
{"title":"Comparative study of (NiFe2O4) photocatalysts for oxytetracycline degradation: Effect of synthesis method on performance stability","authors":"J. Vargas-Bustamante ,&nbsp;E. Benítez-Flores ,&nbsp;Juan C. Durán-Álvarez ,&nbsp;Silvana Cortés-Lagunes ,&nbsp;E.P. Arévalo-López ,&nbsp;J. Pilo ,&nbsp;J.E. Antonio ,&nbsp;R. Escamilla ,&nbsp;M. Romero","doi":"10.1016/j.matchemphys.2025.131242","DOIUrl":"10.1016/j.matchemphys.2025.131242","url":null,"abstract":"<div><div>Oxytetracycline (OTC) is an antibiotic characterized by its persistence, bioaccumulation, and low biodegradability, posing a significant risk to human health. In this study, the degradation of OTC under visible light was investigated considering the structural, morphological and photocatalytic performance of NiFe<sub>2</sub>O<sub>4</sub> nanoparticles under different synthesis methods (mechanochemical, hydrothermal, sol–gel and solid state). The materials were characterized using XRD, XPS, SEM, BET, FT-IR spectra, UV–Vis, PL, and Raman spectroscopy to evaluate their crystallinity, particle size, elemental composition and oxidation states, bandgap, and surface properties. NiFe<sub>2</sub>O<sub>4</sub> synthesized by the mechanochemical method exhibited the highest photocatalytic efficiency, achieving 84.57% OTC degradation, attributed to its lower band gap (1.745 eV) and enhanced surface reactivity. In comparison, NiFe<sub>2</sub>O<sub>4</sub> produced by the sol–gel method also demonstrated high degradation efficiency, while the samples obtained via the hydrothermal and solid-state methods showed lower photocatalytic activity, attributed to their larger bandgaps and more significant particle agglomeration. Photocatalytic stability was evaluated over multiple reaction cycles, with the mechanochemically synthesized sample showing the highest stability. This study highlights the importance of synthesis methods in optimizing the photocatalytic properties of NiFe<sub>2</sub>O<sub>4</sub>, establishing it as a promising material for removing pharmaceutical contaminants from water.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131242"},"PeriodicalIF":4.7,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Electric field and strain tunable band alignment and photoelectric properties of α-In2Se3/Bi2S2Se ferroelectric van der Waals heterostructure α-In2Se3/Bi2S2Se铁电范德华异质结构的电场和应变可调能带对准和光电性能
IF 3.3 3区 材料科学
Computational Materials Science Pub Date : 2025-08-04 DOI: 10.1016/j.commatsci.2025.114175
Cheng Ding , Yue Zhu , Yunlai Zhu , Yuehua Dai , Shibin Lu , Xianwei Jiang , Feifei Wang , Yu Tao
{"title":"Electric field and strain tunable band alignment and photoelectric properties of α-In2Se3/Bi2S2Se ferroelectric van der Waals heterostructure","authors":"Cheng Ding ,&nbsp;Yue Zhu ,&nbsp;Yunlai Zhu ,&nbsp;Yuehua Dai ,&nbsp;Shibin Lu ,&nbsp;Xianwei Jiang ,&nbsp;Feifei Wang ,&nbsp;Yu Tao","doi":"10.1016/j.commatsci.2025.114175","DOIUrl":"10.1016/j.commatsci.2025.114175","url":null,"abstract":"<div><div>Two-dimensional (2D) ferroelectric van der Waals (vdW) heterostructures promise tunable electronic structures, broad-spectrum light absorption, and multifunctional device designs due to their intrinsic polarization and interlayer coupling effects. In this work, we predict a stable <em>α</em>-In<sub>2</sub>Se<sub>3</sub>/Bi<sub>2</sub>S<sub>2</sub>Se heterostructure using first-principles calculations and elucidate its electrical property modulation mechanisms under external electric fields and in-plane strains. For configurations with opposing polarization directions, interfacial charge transfer induces a transition from semiconductor to metallic, accompanied by a Type-I to Type-II band alignment transition. External electric field (0.1–0.5 V Å<sup>−1</sup>) further modulate the band gap, inducing a metal-to-semiconductor in the downward-polarized (P↓) configuration. Under biaxial strain, the bandgap exhibits a linear decrease from −6 % (compressive) to 6 % (tensile) for P↑ configuration, with the P↓ configuration transitioning to a semiconductor state at &gt;−5 % tensile strain. Notably, the heterostructure demonstrates<!--> <!-->enhanced optical absorption coefficients<!--> <!-->compared to individual monolayers, attributed to synergistic interlayer interactions. These findings underscore the potential of <em>α</em>-In<sub>2</sub>Se<sub>3</sub>/Bi<sub>2</sub>S<sub>2</sub>Se for multifunctional applications, including non-volatile ferroelectric memory and optoelectronic devices with tailored band alignments.</div></div>","PeriodicalId":10650,"journal":{"name":"Computational Materials Science","volume":"259 ","pages":"Article 114175"},"PeriodicalIF":3.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Glycerol Electro-Oxidation to Dihydroxyacetone with Coupled Hydrogen Production via In Situ Optimization of Water Oxidation Intermediates. 水氧化中间体原位优化的甘油电氧化制二羟基丙酮偶联制氢研究。
IF 13.3 2区 材料科学
Small Pub Date : 2025-08-04 DOI: 10.1002/smll.202504892
Sandip K Pahari,Heng Jao,Chih-Chian Chang,Kuan-Wei Su,Yung-Fu Chen,Yit-Tsong Chen
{"title":"Glycerol Electro-Oxidation to Dihydroxyacetone with Coupled Hydrogen Production via In Situ Optimization of Water Oxidation Intermediates.","authors":"Sandip K Pahari,Heng Jao,Chih-Chian Chang,Kuan-Wei Su,Yung-Fu Chen,Yit-Tsong Chen","doi":"10.1002/smll.202504892","DOIUrl":"https://doi.org/10.1002/smll.202504892","url":null,"abstract":"In electrocatalytic water splitting, the selective oxidation of glycerol (GLY) to 1,3-dihydroxyacetone (DHA) presents a promising alternative to the oxygen evolution reaction (OER) and enables the concurrent production of valuable chemicals and hydrogen. However, controlling this selective oxidation is challenging due to similar reactivities of the hydroxyl groups of GLY. In this study, an electrocatalyst is synthesized by combining phosphated few-layer phosphorene (FLP-P) with bismuth-doped cobalt oxide (Bi-Co3O4). In the anodic reactions, the Bi center coordinates selectively with the secondary hydroxyl group of GLY; Co3O4 forms the OER intermediates, and the phosphate groups on FLP-P stabilize the OER intermediates through a bifunctional mechanism. In situ Raman spectroscopy is employed to optimize the production of the OER intermediates for achieving 85% GLY conversion reaction and 89% DHA product selectivity in neutral medium. The simultaneous production of valuable chemicals and high-purity hydrogen exemplifies the advancement of green hydrogen production in water electrolysis.","PeriodicalId":228,"journal":{"name":"Small","volume":"10 1","pages":"e04892"},"PeriodicalIF":13.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769600","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
Interface-Engineered 2H-MoS2/MXene Heterostructures for High-Performance Ammonium-Ion Hybrid Supercapacitors. 基于界面工程的2H-MoS2/MXene异质结构高性能铵离子杂化超级电容器。
IF 13.3 2区 材料科学
Small Pub Date : 2025-08-04 DOI: 10.1002/smll.202505627
Xiaofeng Zhang,Zihua Wang,Jiakun Luo,Salamat Ali,Yu Xie,Yuhang Zhao,Peiao Lu,Muhammad Sufyan Javed,Awais Ahmad,Ammar M Tighezza,Kui-Qing Peng,Weihua Han
{"title":"Interface-Engineered 2H-MoS2/MXene Heterostructures for High-Performance Ammonium-Ion Hybrid Supercapacitors.","authors":"Xiaofeng Zhang,Zihua Wang,Jiakun Luo,Salamat Ali,Yu Xie,Yuhang Zhao,Peiao Lu,Muhammad Sufyan Javed,Awais Ahmad,Ammar M Tighezza,Kui-Qing Peng,Weihua Han","doi":"10.1002/smll.202505627","DOIUrl":"https://doi.org/10.1002/smll.202505627","url":null,"abstract":"Aqueous ammonium-ion hybrid supercapacitors (AAHSCs) have received significant interest due to their environmental friendliness and excellent electrochemical performance. 2D transition metal carbides and nitrides (MXenes) are promising cathode candidates for AAHSCs owing to their high conductivity and redox activity. However, their tendency to restack severely limits ion accessibility and rate performance. To address this challenge, vertically aligned 2H-MoS2 nanosheets are grown in situ on Ti3C2Tx MXene to form interfacial heterostructures (HS-2H-MS@MXene). The heterostructure interface forms a stable built-in electric field (BIEF), which accelerates the transport of electric charge driven by the electric field force. The perpendicular orientation of 2H-MoS2 nanosheets effectively reduces charge transfer resistance, increasing surface area and providing abundant active sites for NH4 + storage. As a single electrode, HS-2H-MS@MXene delivers a high specific capacitance of 722.13 F g-1 at 1 A g-1, excellent rate capability (61.6% retention at 20 A g-1), and long-term cycling stability (90.1% retention after 5 000 cycles). When coupled with activated carbon (AC) in a full-cell configuration, the device achieves an energy density of 51.1 Wh kg-1 at a power density of 750.6 W kg-1, maintaining 95.6% capacitance after 10,000 cycles. This work provides an effective strategy for developing advanced cathode materials for next-generation AAHSCs.","PeriodicalId":228,"journal":{"name":"Small","volume":"26 1","pages":"e05627"},"PeriodicalIF":13.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769601","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 Microfluidic Barrier-on-Chip Platform with Integrated Porous Membrane Cell-Substrate Impedance Spectroscopy. 集成多孔膜-基底阻抗谱的微流控片上屏障平台。
IF 9.5 2区 材料科学
ACS Applied Materials & Interfaces Pub Date : 2025-08-04 DOI: 10.1021/acsami.5c05113
Alisa Ugodnikov,Joy Lu,Bhaskar Yechuri,Oleg Chebotarev,Lily E Takeuchi,Craig A Simmons
{"title":"A Microfluidic Barrier-on-Chip Platform with Integrated Porous Membrane Cell-Substrate Impedance Spectroscopy.","authors":"Alisa Ugodnikov,Joy Lu,Bhaskar Yechuri,Oleg Chebotarev,Lily E Takeuchi,Craig A Simmons","doi":"10.1021/acsami.5c05113","DOIUrl":"https://doi.org/10.1021/acsami.5c05113","url":null,"abstract":"Organ-on-chip (OOC) systems that recapitulate microenvironmental features like coculture, fluid shear stress, and extracellular matrix are useful for modeling biological barriers. OOC barrier integrity measurements are often done by trans-endothelial/epithelial electrical resistance (TEER) measurement, but this approach is confounded by nonuniform current distribution and interference from biomaterials typical to such systems. We addressed this gap by incorporating gold leaf porous membrane electrical cell-substrate impedance sensing (PM-ECIS) electrodes (diameters of 250, 500, or 750 μm) into a biocompatible tape-based barrier-on-chip (BOC) platform. PM-ECIS measurements were robust to fluid shear (5 dyn/cm2) in cell-free devices, yet highly sensitive to flow-induced changes in an endothelial barrier model. Perfusion (0.06 dyn/cm2) corresponded to significant decreases in impedance at 40 kHz (p < 0.01 for 750, 500 μm electrodes) and resistance at 4 kHz (p < 0.05 for all electrode sizes) relative to static control, with minimum values reached 6.5-9.5 h after flow induction. We also demonstrated that PM-ECIS is robust to the presence of hydrogel, and unlike chopstick TEER, has the measurement sensitivity to detect human brain microvascular endothelial monolayers in a hydrogel coculture model. The sensitive, noninvasive, real-time measurements of barrier function in microfluidic PM-ECIS setups makes it well-suited for OOC applications that include features like 3D coculture, biomaterials, and shear stress.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"10 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769734","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
Wettability-switchable surface controlled by near-infrared light for droplet manipulation 润湿性可切换表面由近红外光控制液滴操作
IF 7.3 2区 材料科学
Progress in Organic Coatings Pub Date : 2025-08-04 DOI: 10.1016/j.porgcoat.2025.109556
Meng Meng , Bosen Chai , Haifeng Qiu , Yan Liu , Liguo Weng , Deqiang Lian , Konghua Yang , Chunbao Liu
{"title":"Wettability-switchable surface controlled by near-infrared light for droplet manipulation","authors":"Meng Meng ,&nbsp;Bosen Chai ,&nbsp;Haifeng Qiu ,&nbsp;Yan Liu ,&nbsp;Liguo Weng ,&nbsp;Deqiang Lian ,&nbsp;Konghua Yang ,&nbsp;Chunbao Liu","doi":"10.1016/j.porgcoat.2025.109556","DOIUrl":"10.1016/j.porgcoat.2025.109556","url":null,"abstract":"<div><div>Surface wettability switching is of great importance in both theoretical studies and practical applications. The surface wettability switching of thermally responsive shape memory polymer (SMP) by altering temperature has been widely discussed. However, meeting diverse application requirements by selectively switching the local wettability of thermally responsive SMP surfaces remains a significant challenge. Here, we prepared a photocontrolled wettability-switchable SMP surface by doping graphene oxide into a thermally responsive SMP, utilizing a template method. By leveraging the excellent photothermal conversion properties of graphene oxide and the thermal-responsive shape memory properties of SMP, the surface can reversibly change the surface morphology through loading deformation and near-infrared light irradiation. This enables achieving reversible switching of wettability between a superhydrophobic low-adhesion state and a hydrophobic high-adhesion state. The flexibility of near-infrared light irradiation allows for localized wettability switching on the surface by varying the position of light irradiation. Furthermore, we demonstrate the application of this photocontrolled SMP surface for droplet capture and remote, contactless selective release. This showcases the versatility of this surface for various application needs and highlights its immense potential in droplet-based microreactions, bioassays, chemical synthesis, and other applications.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"209 ","pages":"Article 109556"},"PeriodicalIF":7.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767130","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
Microstructural Evolution Dynamics in Rapid Joule Heating Densification of High-Nickel Cathodes. 高镍阴极快速焦耳加热致密化过程中的组织演化动力学。
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-08-04 DOI: 10.1002/adma.202508602
Min-Ho Kim,Jeongwoo Seo,Jaeyong Shin,Eunyoung Park,Ahreum Choi,Myeongjun Choi,Euna Kim,Su Yong Lee,Wooyoung Jin,Sang-Chae Jeon,Yuzhang Li,Changyong Song,Rodney S Ruoff,Won Kyung Seong,Sunghwan Jin,Hyun-Wook Lee
{"title":"Microstructural Evolution Dynamics in Rapid Joule Heating Densification of High-Nickel Cathodes.","authors":"Min-Ho Kim,Jeongwoo Seo,Jaeyong Shin,Eunyoung Park,Ahreum Choi,Myeongjun Choi,Euna Kim,Su Yong Lee,Wooyoung Jin,Sang-Chae Jeon,Yuzhang Li,Changyong Song,Rodney S Ruoff,Won Kyung Seong,Sunghwan Jin,Hyun-Wook Lee","doi":"10.1002/adma.202508602","DOIUrl":"https://doi.org/10.1002/adma.202508602","url":null,"abstract":"High-energy density materials are essential for the advancement of next-generation lithium-ion batteries, which power a wide range of applications from portable electronics to electric vehicles. Among them, high-Nickel (Ni) layered oxide cathodes have emerged as promising candidates due to their high capacity and cost-effectiveness. However, pores and excessive grain growth in high-Ni layered oxides compromise energy density and mechanical integrity, while oversized grains hinder lithium-ion diffusion kinetics, necessitating a sintering strategy that promotes densification without inducing abnormal grain growth. Here, a rapid Joule heating technique combined with two-step sintering is introduced that significantly improves the microstructural integrity of high-Ni cathodes. This approach enables fast densification while suppressing grain growth, resulting in cathodes with higher density, reduced porosity, and enhanced mechanical strength. Through in situ X-ray diffraction (XRD), small angle X-ray scattering (SAXS), and 3D ptychography analysis, it is found that the rapid Joule-heated cathodes exhibit mitigated phase separation, suppressed pore evolution, and improved resistance to crack propagation. They deliver superior cycling stability, coulombic efficiency, and rate performance. These results provide insights into the relationship between sintering dynamics and microstructural evolution, offering guidelines for synthesizing fully densified, high-energy density materials.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"724 1","pages":"e08602"},"PeriodicalIF":29.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Proteolysis-triggered RNA Interference for Mitochondrial Iron Dyshomeostasis to Activate Antitumor Immunity in Hepatic Carcinoma. 蛋白质水解引发的RNA干扰对线粒体铁平衡失调激活肝癌抗肿瘤免疫。
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-08-04 DOI: 10.1002/adma.202508457
Shi-Man Zhang,Xiao-Kang Jin,Hong Chen,Yu-Zhang Wang,Jun-Long Liang,Jun Feng,Wei-Hai Chen,Xian-Zheng Zhang
{"title":"Proteolysis-triggered RNA Interference for Mitochondrial Iron Dyshomeostasis to Activate Antitumor Immunity in Hepatic Carcinoma.","authors":"Shi-Man Zhang,Xiao-Kang Jin,Hong Chen,Yu-Zhang Wang,Jun-Long Liang,Jun Feng,Wei-Hai Chen,Xian-Zheng Zhang","doi":"10.1002/adma.202508457","DOIUrl":"https://doi.org/10.1002/adma.202508457","url":null,"abstract":"Although the disturbance of iron metabolism holds significant promise for antitumor therapy, the specific regulation of the precise acting site remains challenging. Here, a self-triggering proteolysis RNA interference system (cRGD-VFs) is elaborately constructed to precisely disturb mitochondrial iron homeostasis, the core hub of cellular iron regulation, for evoking antitumor immunity. Specifically, ferritin is conjugated with E3 ligase ligand VH032 and tumor-targeting cRGD peptide through click chemistry, and further loaded with ENO1-targeted siRNA to prepare cRGD-VFs. Following the targeted uptake by tumor cells, cRGD-VFs recruits E3 ligase to initiate the ubiquitination process to trigger the proteolysis of ferritin, resulting in the release of abundant Fe2+ and the loaded siRNA. siRNA-mediated ENO1-targeted knockdown would upregulate the mitochondrial iron transport channel through the ENO1-IRP1-Mfrn1 pathway, which subsequently leads to mitochondrial iron overload and the increase of detrimental mitochondrial reactive oxygen species (ROS), thereby triggering severe mitochondria destruction and causing mass death of tumor cells. Noteworthily, it is found that cRGD-VFs-mediated mitochondrial iron overload can activate powerful antitumor immunity by upregulating immune-related pathways to eliminate tumors, achieving notable tumor suppression in multiple murine liver cancer models, which represents a promising strategy of disturbing mitochondrial iron homeostasis for potentiating antitumor immunotherapy.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"22 1","pages":"e08457"},"PeriodicalIF":29.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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