材料科学最新文献

{"title":"A High‐Performance Silicon‐Based Anode Enabled by Hybrid Pathways for All‐Solid‐State Batteries","authors":"Ruijie Li, Junyi Zeng, Pengyu Wang, Tiancheng He, Li Rao, Longjie Zhou, Min Hou, Xigui Zhang, Tiesong Lin, Yu Zhang, Naiqing Zhang","doi":"10.1002/aenm.202502913","DOIUrl":"https://doi.org/10.1002/aenm.202502913","url":null,"abstract":"All‐solid‐state batteries (ASSBs) with lithium metal anodes offer high energy density while face commercialization challenges due to severe interfacial reactions and lithium dendrite formation. Silicon, with its high abundance and specific capacity, is a promising alternative anode material for ASSBs. However, its low ionic and electronic conductivity, along with volumetric expansion‐induced cracking, limits its rate capability and cycling stability in ASSBs. Here, this study designs a metallic network composed of lithium‐indium alloys interspersed among silicon particles, serving as an ionic‐electronic hybrid conductor. This network not only enhances conductivity but also mitigates stress concentration, improving mechanical stability and cycling performance of silicon anode. As a result, ASSBs of In‐Si||Li<jats:sub>5.5</jats:sub>PS<jats:sub>4.5</jats:sub>Cl<jats:sub>1.5</jats:sub>|| LiNi<jats:sub>0.9</jats:sub>Co<jats:sub>0.05</jats:sub>Mn<jats:sub>0.05</jats:sub>O<jats:sub>2</jats:sub> exhibit exceptional rate capability, achieving 80% capacity when comparing charging rate between 6C and 1C. Furthermore, under a current density of 3.69 mA cm<jats:sup>−2</jats:sup>, 98.5% capacity retention over 2000 cycles is achieved. These results highlight the practical potential of the silicon composite anode for high‐performance ASSBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"29 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144770079","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}

{"title":"The cooling-rate-dependent influence of Ag addition on the quench sensitivity of AlZnMg alloys","authors":"X. Yuan ,&nbsp;C.Y. Li ,&nbsp;Y.C. Wu ,&nbsp;Y.T. He ,&nbsp;W.Q. Ming ,&nbsp;Z. Zhang","doi":"10.1016/j.jallcom.2025.182724","DOIUrl":"10.1016/j.jallcom.2025.182724","url":null,"abstract":"<div><div>Large-scale integral structural components have been widely used in contemporary industrial applications, which demands aluminum alloys with low quench sensitivity to ensure uniform properties across thickness sections. The beneficial influence of Ag on mechanical properties of AlZnMg alloys has been well established, while its impact on the quench sensitivity remains poorly understood. This study reveals a cooling-rate-dependent reversal of quench sensitivity in Ag-modified AlZnMg alloys. For air-quenched specimens (∼5 K/s), the Ag-containing alloy exhibits lower quench sensitivity, superior hardness, tensile and yield strength compared to the base alloy. In contrast, this trend reversed at slower cooling rates (∼0.05 K/s), with the Ag-containing alloy showing higher quench sensitivity and inferior mechanical properties. Detailed microstructural analysis suggests this inversion originates from the competitive formation between the quench-induced and age-induced precipitates, since Ag can not only stabilize the supersaturated solid solution, but also simultaneously promote the formation of both. Our findings imply that precise cooling rate control during quenching processes is essential, when designing Ag-modified AlZnMg alloys for critical structural applications.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182724"},"PeriodicalIF":6.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767112","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}

{"title":"Effect of temperature on host emission and ratiometric thermometry in Dy(III) doped tungstate double perovskite","authors":"Naresh Degda ,&nbsp;Nimesh Patel ,&nbsp;S. Masilla Moses Kennedy ,&nbsp;A. Princy ,&nbsp;M. Srinivas","doi":"10.1016/j.jallcom.2025.182733","DOIUrl":"10.1016/j.jallcom.2025.182733","url":null,"abstract":"<div><div>Non-contact ratiometric thermometers owing to thermally coupled energy levels (TCLs) are in high demand due to higher precision and temperature sensitivity. Here, Dy³⁺ activated Mg₃WO₆ down-converting phosphors were investigated for temperature sensing within 303–498 K. Dy³⁺ concentration was varied from 0.5 to 2.5 mol%, and all the phosphors were synthesized via the solid-state reaction at 1200 °C. When excited at 278 nm, the phosphors exhibited tungstate host emission at 473 nm along with Dy³⁺ emissions at 490 nm (⁴F_9/2-⁶H_15/2) and 575 nm (⁴F_9/2-⁶H_13/2), wherein host emission dominated the emission spectrum. The phosphors examined for luminescence decay displayed a reduction in decay lifetime with increasing Dy³⁺ concentration. The temperature-dependent photoluminescence (TDPL) spectra obtained within 303–498 K showed steady decrease in PL intensity of host emission and ⁴F_9/2-⁶H_15/2 (490 nm) emission due to thermal quenching. In contrast, the PL intensity of ⁴F_9/2-⁶H_13/2 (575 nm) transition initially increased before eventually decreasing. This behavior is collectively attributed to the energy transfer efficiency from host emission to activator (Dy³⁺) at higher temperatures and the thermal quenching effect on ⁴F_9/2-⁶H_13/2 Dy³⁺ transition. Utilizing fluorescence intensity ratio (FIR) of TCLs (here 490 nm and 575 nm), the thermometry features were examined and discussed. The highest relative sensitivity is obtained to be 1.91 %K⁻¹ at 303 K, whereas the absolute sensitivity was calculated to be 2.07 %K⁻¹ at 473 K, indicating the suitability of the phosphor in temperature sensing within 303–498 K. Moreover, experiments on the repeatability of FIR confirm the reliability of the studied optical thermometer.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182733"},"PeriodicalIF":6.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766669","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}

{"title":"Effects of Ag content on the microstructure, mechanical and tribological properties of NbN-Ag films","authors":"Haoming Du,&nbsp;Changpeng Zhang,&nbsp;Rulin Zhang,&nbsp;Chengqi Zhu","doi":"10.1016/j.tsf.2025.140761","DOIUrl":"10.1016/j.tsf.2025.140761","url":null,"abstract":"<div><div>The metal phase Ag, due to its low critical shear stress, has been widely applied in the research of wear reduction and toughening of transition metal nitride hard films. In this study, NbN-Ag nanostructured films with various Ag content were deposited via reactive magnetron sputtering to explore the intrinsic relationship between their microstructure, mechanical properties, and tribological behavior. At an Ag doping level of ∼ 2.1 at. %, the fcc-Ag phase was found to coexist with the fcc-NbN matrix phase, where Ag was embedded either as a two-dimensional overlayer or as nanocrystalline grains. The film hardness initially increased and then decreased with rising Ag content, peaking at ∼17.6 GPa for the ∼2.1 at. % Ag-doped film. This enhancement was primarily attributed to grain boundary strengthening induced by the second-phase Ag. Moreover, the average friction coefficient exhibited a decreasing trend with increasing Ag content. The film with ∼2.1 at. % Ag demonstrated the best wear resistance, exhibiting an average friction coefficient of ∼ 0.54.</div></div>","PeriodicalId":23182,"journal":{"name":"Thin Solid Films","volume":"826 ","pages":"Article 140761"},"PeriodicalIF":2.0,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A self-powered and cost-effective rGO/n-Si photodetector with broad spectral response including visible, UV, and near-IR regions","authors":"Mehmet Yilmaz ,&nbsp;Mehmet Yaman ,&nbsp;Fatma Yildirim ,&nbsp;Samsoor Nuhzat ,&nbsp;Sakir Aydogan","doi":"10.1016/j.mseb.2025.118659","DOIUrl":"10.1016/j.mseb.2025.118659","url":null,"abstract":"<div><div>Schottky-type photodetectors are considered an attractive research focus by researchers due to their simple fabrication process and fast response time. However, optimization of the Schottky barrier height is still considered a major challenge, which is being investigated to improve device performance for visible light sensing applications. The study aims to fabricate a reduced graphene oxide/silicon (rGO/n-Si) Schottky photodetector optimized for high-performance visible light sensing and characterize the diode parameters. The fabricated device exhibited a high ON/OFF ratio of 10³, a detection of 5.21 × 10¹¹ Jones (D^∗) and a responsivity of 700 mA/W (<em>R</em>) under 590 nm illumination. The instrument also demonstrated excellent spectral sensitivity in the UV range with high external quantum efficiency (EQE) exceeding 200 % at 365 nm. The obtained results have demonstrated the potential of rGO as a tunable interfacial material to obtain optimized Schottky junctions in optoelectronic applications and are thought to be instructive for other researchers.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"322 ","pages":"Article 118659"},"PeriodicalIF":4.6,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767089","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}

{"title":"Efficient Humidity-to-Hydrogen Photocatalysis: Engineering Polymer-Catalyst Bonds in Hygroscopic Hydrogels with Sulfur-Vacancy-Rich Nanosheets.","authors":"Zhen Liu,Liangyu Li,Huping Yan,Chuanshuai Dong,Mengying Li,Ronghui Qi","doi":"10.1002/smll.202506127","DOIUrl":"https://doi.org/10.1002/smll.202506127","url":null,"abstract":"This study presents an efficient hydrogel-based photocatalytic system for green hydrogen production directly from atmospheric humidity. By constructing a triangular-pyramid Zn-O bonding structure between hygroscopic polyacrylamide (PAM) hydrogel and sulfur vacancy-rich ZnIn2S4 (Sv-ZIS) nanosheets, strong interactions between gel O atoms and Zn atoms near S vacancies lead to shorter, more stable bonds. This structure enhances charge separation, accelerates reactant and product transport, and reinforces the hydrogel's mechanical properties. The composite achieves an apparent quantum efficiency of 35.1% at 365 nm and a stable hydrogen evolution rate of 28.79 mmol/gcat/h at ∼30 °C and 50% RH under 100 mW cm-2 irradiation - surpassing traditional water-based photocatalysis. It also performs well under low-intensity LED light, indicating potential for indoor use. Molecular dynamics and DFT simulations reveal that the pyramid structure promotes polymer chain extension, increases water binding sites, and that sulfur vacancies facilitate H* desorption and further strengthen Zn-O interactions. The synergistic effect of the polymer matrix and sulfur vacancies boosts both activity and durability, while maintaining hygroscopicity. The composite is prepared via a mild, scalable in-situ method, highlighting its potential for practical, sustainable hydrogen production from ambient moisture.","PeriodicalId":228,"journal":{"name":"Small","volume":"15 1","pages":"e06127"},"PeriodicalIF":13.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769623","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}

{"title":"Multifunctional Biguanide Additive Stabilizes Chloride-Rich Quasi-2D Perovskites for Efficient and Stable Pure-Blue LEDs.","authors":"Bufan Yu,Xingxing Duan,Zhaohui Xing,Jiacheng Liu,Yutong Pan,Lei Wang,Jiangshan Chen,Dongge Ma","doi":"10.1021/acsami.5c12585","DOIUrl":"https://doi.org/10.1021/acsami.5c12585","url":null,"abstract":"Quasi-2D perovskites are emerging as promising materials for light-emitting applications due to their pronounced quantum confinement effects. Blue perovskite light-emitting diodes (PeLEDs) remain fundamentally challenging yet critically demanded for display applications. Current strategies employing quasi-2D perovskites face inherent trade-offs: 1) increased spacer cation content enhances quantum confinement for blueshift but deteriorates charge transport through insulating organic layers; 2) multiphase quantum well formation broadens emission spectra (fwhm >25 nm), compromising color purity; 3) chloride incorporation for bandgap widening induces deep-level traps and accelerates halide segregation under operational voltage. Herein, we address these intertwined challenges through multifunctional additive engineering using phenylbiguanide (PBG). The conjugated molecular structure with dual -NH2/═NH groups enables 3-fold functionality: First, strong Pb-PBG coordination effectively passivates uncoordinated halide vacancies, suppressing nonradiative recombination and achieving a high photoluminescence quantum yield (PLQY) of 76.6%. Second, hydrogen-bonding networks between PBG and [PbX6]4- frameworks immobilize halide ions, inhibiting electric-field-driven Cl/Br phase segregation. Third, PBG modulates crystallization kinetics to produce a narrow quantum well distribution for narrow emission (fwhm = 21 nm) at 472 nm and efficient Förster resonance energy transfer. The synergistic effects yield pure-blue PeLEDs with an impressive EQE of 9.32% at 472 nm, with stable emission and a 10-fold enhancement of lifetime compared to the pristine device without PBG. This work offers a promising approach to the development of high-performance blue PeLEDs using quasi-2D perovskites.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"151 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769760","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}

{"title":"Push-Pull Electronic Effect and D-Band Center Bi-Modulated Bio-Heterojunction Enzyme Enables All-Stage Infected Wound Healing.","authors":"Miaomiao He,Qiancun Wang,Zhijie Lin,Dan Sun,Guangfu Yin,Yi Deng,Weizhong Yang","doi":"10.1002/adma.202510161","DOIUrl":"https://doi.org/10.1002/adma.202510161","url":null,"abstract":"Pathogenic infections pose a persistent threat to global public health, necessitating innovative antibacterial strategies with well-defined disinfection pathway. The antibacterial efficiency is confined in the contradiction between reactants adsorption and intermediates desorption. Here, the FeMoS4/MXene bio-heterojunction enzyme (FM BioHJzyme) is proposed and constructed. Under the inspiration of near-infrared light (NIR), the heterostructures between the FeMoS4 and MXene facilitates efficient electron-hole separation with localized electron accumulation at FeMoS4 sites. Crucially, the electronic push-pull effect induced by Mo polarizes oxygen-containing reactants (H2O2, H2O, O2) toward Fe active centers, enabling sequential electron capture for reactive oxygen species (ROS) generation. The results also reveal an enhancement in electron density at Fe sites compared to FeS/MXene controls, which is accompanied by a downshift in the Fe d-band center that reduces intermediates adsorption energy. The therapeutic efficacy is systematically evaluated using an S. aureus-infected full-thickness skin defect model. The bi-modulated FM BioHJzyme exhibits favorable antibacterial efficiency under NIR irradiation, while subsequent wound healing is facilitated through collagen deposition and angiogenesis in the following absence of NIR irradiation. This work offers a deep insight into the intricate mechanism-performance relationship of BioHJzyme platform in catalytic anti-bacterial application and proposes a sustainable approach of mechanism-guided materials design.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"58 1","pages":"e10161"},"PeriodicalIF":29.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769818","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}

{"title":"Dynamic Dissolution-Deposition Equilibrium Enables Unprecedented HER Stability in Acidic PEMWE.","authors":"Zhibin Li,Haonan Zhong,Xiongjun Liu,Fu-Kuo Chiang,Rui Li,Houwen Chen,Xianzhen Wang,Chubin Wan,Yuan Wu,Hui Wang,Suihe Jiang,Xiaobin Zhang,Zhaoping Lu","doi":"10.1002/adma.202510703","DOIUrl":"https://doi.org/10.1002/adma.202510703","url":null,"abstract":"Proton exchange membrane water electrolysis (PEMWE) holds substantial promise for effectively utilizing renewable energy to produce green hydrogen. However, it faces critical durability challenges due to acid-driven catalyst degradation under intermittent renewable power. Here, this study reports a dynamic dissolution-deposition equilibrium that achieves exceptional hydrogen evolution reaction (HER) stability through rational design of a high-entropy alloy-derived architecture. Dealloying FeCoNiNbPt HEA creates a porous scaffold with dual-functional components: an amorphous NbOx buffer suppressing metal dissolution, while multicomponent Pt3(FeCoNi) nanocrystals synergistically enhancing HER activity (137 mV@1 A cm-2, 2.5 × lower than Pt/C) that thermodynamically favors redeposition. This dynamic self-adaptive mechanism maintains equilibrium under harsh operating conditions, demonstrating exceptional durability (>2200 h @1 A cm-2 and 1 000 000 cycles). The self-supported catalysts can be easily mass-produced with 8.87 wt.% Pt loading (60% reduction vs Pt/C), indicating its industrial applicability. The equilibrium-driven design paradigm opens new avenues for industrial proton-exchange-membrane devices operating under fluctuating power.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"10 1","pages":"e10703"},"PeriodicalIF":29.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769862","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}

{"title":"Ultrathin high-entropy alloy nanowires as a bi-functional catalyst for the hydrogen evolution reaction and methanol oxidation reaction","authors":"Sumei Han, Lei Xu, Chaoqun Ma, Wenbin Cao, Qipeng Lu","doi":"10.1039/d5ta03751d","DOIUrl":"https://doi.org/10.1039/d5ta03751d","url":null,"abstract":"High-entropy alloys (HEAs) have been used as critical electrocatalysts. However, achieving precise atomic-level control over their dimensions and morphologies remains a formidable challenge. In this work, distinctive PtPdRuFeCoNi HEA nanowires (NWs) that possess an average diameter of 1.36 ± 0.05 nm are successfully synthesized. The prepared HEA NWs can serve as a bi-functional electrocatalyst for the hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR) in alkaline solution. The HEA NWs exhibit an ultrasmall overpotential of 14 mV at 10 mA cm<small>⁻²</small> for alkaline HER and long-term durability over 50 h. Furthermore, the HEA NWs exhibit excellent catalytic performance for the MOR with a mass activity of 10.4 A mg<small>_PGM</small><small>⁻¹</small>, 13.0 times as high as that of commercial Pt/C. This work offers a facile approach for the synthesis of HEA NWs and facilitates the use of highly active HEA-based catalysts in clean energy conversion and utilization.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"26 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769930","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}