Journal of Alloys and Compounds最新文献

{"title":"Pore-Structure Optimization of Three-Dimensional and Free-Standing rGO Hosts for Lithium Metal Anodes","authors":"Junjie Cao,&nbsp;Guilin Hu,&nbsp;Yuzhen Xia","doi":"10.1016/j.jallcom.2026.192232","DOIUrl":"10.1016/j.jallcom.2026.192232","url":null,"abstract":"<div><div>Nonuniform Li⁺ transport and interfacial instability severely limit the reversibility and cycling life of lithium metal anodes. Herein, free-standing three-dimensional reduced graphene oxide (rGO) hosts were employed to accelerate ion transport and to accommodate the severe volume expansion/contraction of lithium metal anodes. By compacting the rGO pieces from the initial thickness (2 to 6<!--> <!-->mm) to 0.5<!--> <!-->mm, a series of rGO hosts were constructed. Scanning electron microscopy (SEM) revealed that both the pore size and porosity decreased with the increasing compression ratio. The electrochemical results showed a non-monotonic relationship between the compression degree and Li deposition behavior. rGO-3, with an initial thickness of 3<!--> <!-->mm, exhibited a low Li nucleation overpotential of 33<!--> <!-->mV, a polarization of 22<!--> <!-->mV at 0.5<!--> <!-->mA<!--> <!-->cm^-2 and 1 mAh cm^-2, and stable cycling for 521<!--> <!-->h at 1<!--> <!-->mA<!--> <!-->cm^-2 and 1 mAh cm^-2. Notably, rGO-3@Li retained a capacity of 117 mAh g^-1 after 300 cycles at 1<!--> <!-->C, corresponding to a capacity retention of 79.52% and a coulombic efficiency of 99.47%, while delivering 88 mAh g^-1 at 4<!--> <!-->C. The finite-element simulations showed that insufficient compression resulted in poor sheet-to-sheet contact, whereas excessive compression narrowed the ion-transport channels. A moderate porous structure enabled rGO-3 to provide an interconnected electron-conduction network with accessible Li⁺ transport pathways, thereby homogenizing Li⁺ flux and stabilizing Li plating/stripping.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1086 ","pages":"Article 192232"},"PeriodicalIF":6.7,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149355224","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":"Ag Doping and Bi/Sn Co-Substitution in Cu3SbSe4: Combined Effects on Thermoelectric and Mechanical Properties","authors":"Xin Sun,&nbsp;Honglei Wang,&nbsp;Lei Wang,&nbsp;Songtao Dong,&nbsp;Hongbo Ju","doi":"10.1016/j.jallcom.2026.192290","DOIUrl":"10.1016/j.jallcom.2026.192290","url":null,"abstract":"<div><div>Cu₃SbSe₄ is a promising thermoelectric material, but its intrinsically low carrier concentration constrains its electrical conductivity and limits overall thermoelectric performance. In this study, Cu₃SbSe₄ and Cu_2.85Ag_0.15Sb_{1-2<em>x</em>}(BiSn)_<em>x</em>Se₄ (x=0, 0.02, and 0.03) ceramics were synthesized by a hybrid processing route combining vacuum melting, post-annealing, and hot-press sintering. Co-doping the Cu₃SbSe₄ matrix with Ag, Bi, and Sn significantly enhanced the carrier concentration from 0.30 × 10¹⁹ to 24.02 × 10^19<!-->cm⁻³, mainly through Sn⁴⁺ acceptor substitution at Sb sites and Ag-induced Cu-vacancy formation, while isovalent Bi⁵⁺ may contribute to band-structure modification and phonon scattering. Tthe electrical conductivity increased from 16.2 S cm⁻¹ for pristine Cu₃SbSe₄ to 159.8 S cm⁻¹ for Cu_2.85Ag_0.15Sb_0.94(BiSn)_0.03Se₄ at 323<!--> <!-->K. This multi-element doping strategy also refined the microstructure, inducing grain-size reduction, lattice-scale defects, and precipitation of a secondary AgSbSe₂ phase, thereby intensifying phonon scattering and suppressing lattice thermal conductivity. At 623<!--> <!-->K, Cu_2.85Ag_0.15Sb_0.94(BiSn)_0.03Se₄ attained a power factor of 613.9 μWm⁻¹K⁻², approximately 2.01 times that of undoped Cu₃SbSe₄ (305 μWm⁻¹K⁻²), corresponding to a 101% increase. The highest ZT reached 0.59 at 623<!--> <!-->K for <em>x</em> = 0.03, which is 2.36 times that of pristine Cu₃SbSe₄ (<em>ZT</em> = 0.25). Mechanical characterization revealed a 36.2% increase in instrumented indentation hardness and a 26.8% increase in elastic modulus, indicating improved resistance to plastic deformation and higher stiffness under the tested conditions. Because binary control samples were not prepared, the individual roles of Ag, Bi, and Sn are discussed phenomenologically rather than mechanistically. These findings demonstrate that Ag/Bi/Sn co-doping is a promising laboratory-scale materials design strategy for tuning both thermoelectric and mechanical properties of Cu₃SbSe₄.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1086 ","pages":"Article 192290"},"PeriodicalIF":6.7,"publicationDate":"2026-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149355226","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":"Design, Mechanical Performance, and Corrosion Behavior of Zn–5Al–0.6X (X = Si, Cr, Mn, Mg) Hot-Dip Galvanized Coatings","authors":"Abdelhalim. Chaouki,&nbsp;Meriem. Ben Ali,&nbsp;Mohamed. El Garah,&nbsp;Ismail. Benabdallah,&nbsp;Abdelouahed. El Fatimy,&nbsp;Sanae. Naamane","doi":"10.1016/j.jallcom.2026.192284","DOIUrl":"10.1016/j.jallcom.2026.192284","url":null,"abstract":"<div><div>Improving the corrosion resistance of zinc-based coatings remains a major challenge for steel parts used in aggressive environments. Although Zn-Al coatings have demonstrated improved protective performance compared to conventional galvanizing, further optimization is necessary to achieve superior durability without increasing the coating thickness. This study examines the development of new zinc alloy coatings by hot-dipping containing 5<!--> <!-->wt.% of Al with minor additions (0.6<!--> <!-->wt.%) of Si, Cr, Mn, and Mg, to evaluate their influence on microstructural stability, mechanical performance, and corrosion behavior. The results reveal that the alloy additions significantly modify the solidification path, leading to distinct dendritic morphologies and different phase distributions. Among the systems studied, the coating containing Si showed the best overall performance, displaying the lowest wear rate (4.6899 × 10^-4 mm³.N^-1.m^-1) and a delay in the appearance of red rust up to 1024<!--> <!-->hours of exposure to salt fog. In contrast, the coatings containing Mn and Cr showed earlier degradation and higher fractions of corroded surface area after prolonged exposure. Overall, the multi-element alloy promotes microstructural refinement and the formation of compact corrosion products, thereby contributing to improved protective efficiency. These results highlight the potential of advanced Zn-based alloys for long-term protection under severe service conditions.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1086 ","pages":"Article 192284"},"PeriodicalIF":6.7,"publicationDate":"2026-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367258","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":"High-entropy materials for overall water splitting: recent progress, catalytic mechanisms, challenges, and future perspectives","authors":"Asadullah Dawood, Humaira Rashid Khan, Ambreen Ayub, Muhammad Waseem, Faisal Baig, Katabathini Narasimharao","doi":"10.1016/j.jallcom.2026.192189","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.192189","url":null,"abstract":"Electrochemical water splitting is limited by sluggish oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) kinetics, catalyst degradation and the scarcity of platinum-group metals. High-entropy materials (HEMs) such as alloys, oxides, (oxy)hydroxides, layered double hydroxides, phosphides and chalcogenides offer a wide range of local atomic environments to tune the dissociation of water, hydrogen binding and the adsorption of oxygen intermediates. The key argument of this review is that the as-synthesized HEM is often not the actual working catalyst, and a high-entropy benefit can only be demonstrated when the multi-element nature is maintained at the operando surface and is superior to matched lower-entropy and reconstructed counterparts. Evidence-based categories are introduced, ranging from nominal high entropy precursors to the operando high entropy active layers and high entropy derived catalysts, and the main reconstruction pathways (selective leaching, surface segregation, hydroxylation and dissolution-redeposition) are summarized with representative case studies. Then, material families, synthesis routes and HER/OER mechanisms are critically reviewed, including dual-site oxide-path and oxygen-spillover pathways and the influence of Fe impurities in KOH on NiFe-based HEMs. Reported performance is evaluated together with reporting completeness, and minimum reporting requirements are defined, while the practical constraints of operando, computational and machine-learning tools are discussed. Device-level data indicate promising cell voltages, but test durations are short and degradation rates are still far from industrial targets, so HEMs are still promising but not yet industrially relevant. To achieve durable, low-cost electrodes for renewable hydrogen production, compositional complexity must be treated as an explicit design objective, together with noble-metal content, multi-element recyclability, scalable synthesis and membrane-electrode-assembly validation.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"29 1","pages":"192189"},"PeriodicalIF":6.2,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359240","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":"Epitaxial growth and electrical properties of chiral topological PtxAl thin films","authors":"Oishy Roy, Ching-Tzu Chen, Zahra Ahmadian, Atharv Jog, Nargess Arabchi, Rui Shu, Daniel Gall","doi":"10.1016/j.jallcom.2026.192231","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.192231","url":null,"abstract":"Pt&lt;ce:inf loc=\"post\"&gt;&lt;ce:italic&gt;x&lt;/ce:italic&gt;&lt;/ce:inf&gt;Al films, 49 – 63&lt;ce:hsp sp=\"0.25\"&gt;&lt;/ce:hsp&gt;nm thick, are deposited by co-sputtering from Pt and Al targets at &lt;ce:italic&gt;T&lt;/ce:italic&gt;&lt;ce:inf loc=\"post\"&gt;s&lt;/ce:inf&gt; = 700 and 1000 ℃ in order to study phase formation and transport properties as a function of the Pt-to-Al ratio &lt;ce:italic&gt;x&lt;/ce:italic&gt;, and to explore the potential of PtAl as conductor for narrow interconnect lines. A stoichiometric composition &lt;ce:italic&gt;x&lt;/ce:italic&gt; = 1.00 ± 0.01 leads to single-phase epitaxial PtAl(001)/Al&lt;ce:inf loc=\"post\"&gt;2&lt;/ce:inf&gt;O&lt;ce:inf loc=\"post\"&gt;3&lt;/ce:inf&gt;(&lt;mml:math altimg=\"si0001.gif\"&gt;&lt;mml:mn&gt;1&lt;/mml:mn&gt;&lt;mml:mover accent=\"true\"&gt;&lt;mml:mrow&gt;&lt;mml:mn&gt;1&lt;/mml:mn&gt;&lt;/mml:mrow&gt;&lt;mml:mo&gt;̅&lt;/mml:mo&gt;&lt;/mml:mover&gt;&lt;mml:mn&gt;02&lt;/mml:mn&gt;&lt;/mml:math&gt;) layers with an in-plane relationship with the substrate PtAl [100] || Al&lt;ce:inf loc=\"post\"&gt;2&lt;/ce:inf&gt;O&lt;ce:inf loc=\"post\"&gt;3&lt;/ce:inf&gt;&lt;mml:math altimg=\"si0002.gif\"&gt;&lt;mml:mo stretchy=\"false\"&gt;[&lt;/mml:mo&gt;&lt;mml:mn&gt;1&lt;/mml:mn&gt;&lt;mml:mover accent=\"true\"&gt;&lt;mml:mrow&gt;&lt;mml:mn&gt;1&lt;/mml:mn&gt;&lt;/mml:mrow&gt;&lt;mml:mo&gt;̅&lt;/mml:mo&gt;&lt;/mml:mover&gt;&lt;mml:mn&gt;0&lt;/mml:mn&gt;&lt;mml:mover accent=\"true\"&gt;&lt;mml:mrow&gt;&lt;mml:mn&gt;1&lt;/mml:mn&gt;&lt;/mml:mrow&gt;&lt;mml:mo&gt;̅&lt;/mml:mo&gt;&lt;/mml:mover&gt;&lt;mml:mo stretchy=\"false\"&gt;]&lt;/mml:mo&gt;&lt;/mml:math&gt; and PtAl [010] || Al&lt;ce:inf loc=\"post\"&gt;2&lt;/ce:inf&gt;O&lt;ce:inf loc=\"post\"&gt;3&lt;/ce:inf&gt; [&lt;mml:math altimg=\"si0003.gif\"&gt;&lt;mml:mn&gt;11&lt;/mml:mn&gt;&lt;mml:mover accent=\"true\"&gt;&lt;mml:mrow&gt;&lt;mml:mn&gt;2&lt;/mml:mn&gt;&lt;/mml:mrow&gt;&lt;mml:mo&gt;̅&lt;/mml:mo&gt;&lt;/mml:mover&gt;&lt;mml:mn&gt;0&lt;/mml:mn&gt;&lt;/mml:math&gt;], a dense microstructure with a measured density &lt;ce:italic&gt;ρ&lt;/ce:italic&gt;&lt;ce:inf loc=\"post\"&gt;&lt;ce:italic&gt;m&lt;/ce:italic&gt;&lt;/ce:inf&gt; = 12.8 gcm&lt;ce:sup loc=\"post\"&gt;-3&lt;/ce:sup&gt; that matches that expected for PtAl&lt;ce:italic&gt;,&lt;/ce:italic&gt; a surface roughness &lt;ce:italic&gt;σ&lt;/ce:italic&gt; = 0.2 and 1.1&lt;ce:hsp sp=\"0.25\"&gt;&lt;/ce:hsp&gt;nm for &lt;ce:italic&gt;T&lt;/ce:italic&gt;&lt;ce:inf loc=\"post\"&gt;s&lt;/ce:inf&gt; = 700 and 1000 ℃, respectively, and an anisotropic in-plane tensile strain of (0.3±0.1)%. Films with Pt-poor compositions &lt;ce:italic&gt;x&lt;/ce:italic&gt; = 0.62–0.95 contain Pt&lt;ce:inf loc=\"post\"&gt;2&lt;/ce:inf&gt;Al&lt;ce:inf loc=\"post\"&gt;3&lt;/ce:inf&gt; impurity grains, exhibit an underdense microstructure with intercolumnar voids, and an increasing roughness and decreasing density with increasing deviation from stoichiometry, reaching &lt;ce:italic&gt;σ&lt;/ce:italic&gt; = 1&lt;ce:sup loc=\"post\"&gt;.3&lt;/ce:sup&gt; nm and &lt;ce:italic&gt;ρ&lt;/ce:italic&gt;&lt;ce:inf loc=\"post\"&gt;m&lt;/ce:inf&gt; = 10.1 gcm&lt;ce:sup loc=\"post\"&gt;-3&lt;/ce:sup&gt; at &lt;ce:italic&gt;x&lt;/ce:italic&gt; = 0.62 and &lt;ce:italic&gt;T&lt;/ce:italic&gt;&lt;ce:inf loc=\"post\"&gt;s&lt;/ce:inf&gt; = 700 ℃. Over-stoichiometric compositions &lt;ce:italic&gt;x&lt;/ce:italic&gt; = 1.02–1.38 cause inclusion of Pt&lt;ce:inf loc=\"post\"&gt;5&lt;/ce:inf&gt;Al&lt;ce:inf loc=\"post\"&gt;3&lt;/ce:inf&gt; secondary phase grains, surface segregated Pt-rich particles that lead to an increasing roughness reaching &lt;ce:italic&gt;σ&lt;/ce:italic&gt; = 2.0&lt;ce:hsp sp=\"0.25\"&gt;&lt;/ce:hsp&gt;nm for &lt;ce:italic&gt;x&lt;/ce:italic&gt; = 1.38, and an increasing density with increasing &lt;ce:italic&gt;x&lt;/ce:italic&gt; due to the high-dens","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"399 1","pages":"192231"},"PeriodicalIF":6.2,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359213","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":"Insight into particle-size-dependent piezoresistive behavior of TiB2/SiCNO composite films for high-temperature strain monitoring","authors":"Xianwei Qian, Le Su, Yuhua Fang, Lantian Tang, Mengxue Chen, Haoyang Ni, Sancai Jing, Jiahao Yang, Lingyun Wang","doi":"10.1016/j.jallcom.2026.192226","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.192226","url":null,"abstract":"High-temperature thin-film strain gauges (TFSGs) are essential components for structural health monitoring under extreme operating conditions in the aerospace, energy, and power industries. The TiB<ce:inf loc=\"post\">2</ce:inf>/SiCNO composite ceramic system combines high-temperature resistance with strain response capabilities, making it a highly promising material for high-temperature strain sensing. However, existing research still has significant room for improvement in this system's gauge factor (GF), and the mechanism by which filler particle size regulates strain performance remains unclear. In this study, TFSGs were fabricated by compositing TiB<ce:inf loc=\"post\">2</ce:inf> powders with three different particle sizes (50<ce:hsp sp=\"0.25\"></ce:hsp>nm, 1 μm, and 2 μm) with amorphous SiCNO ceramic. A comprehensive characterization of crystal structure, microstructure, room-temperature strain performance, and high-temperature sensing performance up to 800 °C was conducted, revealing the intrinsic mechanisms by which TiB<ce:inf loc=\"post\">2</ce:inf> particle size regulates the conductive network structure and GF. The results indicate that the TiB<ce:inf loc=\"post\">2</ce:inf>/SiCNO TFSG prepared from 2 μm coarse-grained TiB<ce:inf loc=\"post\">2</ce:inf> exhibits a GF coefficient of 14.56 at room temperature, approximately twice that of the 50<ce:hsp sp=\"0.25\"></ce:hsp>nm ultrafine-grained sample. This sample can output stable and reversible dynamic strain signals across the temperature range from RT to 800 °C, with the sensitivity coefficient remaining above 13 at 800 °C, and also exhibits excellent signal linearity, cyclic repeatability, and long-term temperature stability. This study has clarified that the sparse point-contact conductive network formed by TiB<ce:inf loc=\"post\">2</ce:inf> is the core mechanism underlying the high GF, providing a theoretical basis and engineering solutions for the material design and performance optimization of TiB<ce:inf loc=\"post\">2</ce:inf>/SiCNO-based high-temperature strain gauges.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"18 1","pages":"192226"},"PeriodicalIF":6.2,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359238","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":"Unveiling the corrosion mechanism of nano‑Ti reinforced ZM61 alloys: Multifactor synergy from a microstructure perspective","authors":"Huabao Yang, Chao He, Yuxin Tian, Shuangyu Liu, Jun Xu, Qinghang Wang, Liang Wu, Bin Jiang, Peng Wang, Nan Zhou, Kaihong Zheng","doi":"10.1016/j.jallcom.2026.192228","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.192228","url":null,"abstract":"This study systematically investigated the effects of nano-Ti particles on the microstructure and corrosion properties of nano‑Ti reinforced ZM61 composites fabricated via vacuum stirring casting followed by hot extrusion, with an emphasis on revealing the underlying corrosion mechanism from a multifactor synergy perspective rooted in microstructural features. Microstructural characterization revealed that the introduction of nano-Ti particles significantly refined the average grain size from 13.69 μm to 5.37 μm, promoted the precipitation and enrichment of MgZn₂ and α-Mn phases serving as cathodic sites for micro-galvanic corrosion, reduced the basal texture intensity from 10.06 to 7.19, and increased the proportion of high surface energy prismatic-oriented grains from 19.7% to 27.7%. The corrosion resistance of the composites deteriorated significantly with an increase in the Ti content. Compared with the monolithic ZM61 alloy (corrosion current density of 61.7 μA·cm⁻², charge transfer resistance of 162.1 Ω·cm²), the 3Ti/ZM61 composite exhibited a corrosion current density of 328 μA·cm⁻², a charge transfer resistance of 28.24 Ω·cm², and a maximum pitting depth of 519.5 μm after 9<ce:hsp sp=\"0.25\"></ce:hsp>h of immersion, which reflected a substantially inferior corrosion performance relative to the ZM61 matrix alloy. Corrosion mechanism investigations demonstrated that micro-galvanic corrosion originating from abundant cathodic second phase particles was the dominant corrosion mechanism, while grain refinement elevated grain boundary density, texture evolution, and defective corrosion product films served as secondary synergistic factors. The increased grain boundary density provided preferential propagation pathways for corrosion, whereas the weakened basal texture and prismatic crystal planes with high surface energy lowered the surface thermodynamic stability and increased corrosion susceptibility. Intense micro-galvanic coupling between the cathodically enriched second phases and the α-Mg matrix accelerated rapid anodic matrix dissolution. Such matrix dissolution further induced the formation of thick, porous, and cracked corrosion product films, whose average thickness increased from 8.08 μm for ZM61 to 48.77 μm for 3Ti/ZM61 after 9<ce:hsp sp=\"0.25\"></ce:hsp>h of immersion in 3.5<ce:hsp sp=\"0.25\"></ce:hsp>wt.% NaCl solution. Notably, the porous TiO₂ generated within the corrosion products failed to form a continuous protective passive barrier and offered additional diffusion channels for corrosive anions. Although the total film thickness increased, the multiplication of cracks and defects caused their protective capability against the substrate to decrease rather than improve, eventually aggravating the overall corrosion of the composites.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"8 1","pages":"192228"},"PeriodicalIF":6.2,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359237","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":"Amide-Zn Coordination Enabled ANF/ZIF-8 Hierarchical Electrolyte for Safe and Flexible Lithium Metal Batteries","authors":"Jingbo Mu, Jiansong Liu, Xuewei Hao, Long Gao, Feng Xu, Bihai Su, Linlin Shi, Zengcai Guo","doi":"10.1016/j.jallcom.2026.192223","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.192223","url":null,"abstract":"Composite solid electrolytes face inherent conflicts between ionic conductivity and mechanical robustness. Fast Li<ce:sup loc=\"post\">+</ce:sup> migration requires flexible polymer chains, while dendrite suppression demands rigid networks. Filler agglomeration and polymer crystallinity further disrupt ion pathways and restrict Li<ce:sup loc=\"post\">+</ce:sup> mobility. To break these bottlenecks, we construct an ANF-ZIF-8 heterogeneous composite architecture via electrospinning, integrating aramid nanofibers and ZIF-8 nanoparticles within a PVDF-HFP matrix. The ANF/ZIF-8 heterogeneous composite architecture integrates ZIF-8 nanoparticles with the fibrous ANF framework, providing additional interfacial regions within the polymer electrolyte. The fibrous framework provides abundant interfacial regions favorable for Li<ce:sup loc=\"post\">+</ce:sup> transport, the incorporation of this architecture is accompanied by changes in LiTFSI ionic association states, as revealed by Raman spectroscopy. This dual-level design delivers a Li<ce:sup loc=\"post\">+</ce:sup> transference number of 0.82, an electrochemical window of 5.1<ce:hsp sp=\"0.25\"></ce:hsp>V, and a tensile strength of 5.3<ce:hsp sp=\"0.25\"></ce:hsp>MPa. Symmetric Li||Li cells cycle stably over 1300<ce:hsp sp=\"0.25\"></ce:hsp>h. Full cells with LiFePO<ce:inf loc=\"post\">4</ce:inf> and NCM811 cathodes exhibit favorable electrochemical performance under the investigated conditions. Flexible pouch cells sustain output under bending and cutting. This work offers a structural modulation strategy for high-performance composite solid electrolytes through rational interfacial regulation and hierarchical structural design.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"10 1","pages":"192223"},"PeriodicalIF":6.2,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359239","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":"Robust PU foam decorated with mono-and bi-metal-organic frameworks for enhanced organic solvent absorption and dye removal","authors":"Haniyeh Ahmadi, Milad Atighi, Muhammad Akram, Mahdi Hasanzadeh","doi":"10.1016/j.jallcom.2026.192230","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.192230","url":null,"abstract":"Wastewater pollution is a continuous problem in the world caused by the recalcitrance and toxicity of water insoluble oils and synthetic dyes, which makes the use of advanced multifunctional remediation materials necessary. In this study, we report the synthesis of Zn-MOF, Co-MOF, and bimetallic Zn/Co-MOF powders via a controlled methanolic procedure, followed by their immobilization on polyurethane foam (PUF) using the sodium-alginate binder impregnation protocol. The immobilized MOF particles bring about a high surface area, strong interfacial roughness, and better wettability, which favors the concurrent organic solvent absorption and dye removal. Structural and morphological characterization using XRD, FTIR, and FESEM-EDS analyses confirmed the crystallization of ZIF frameworks, the successful incorporation of metals into the bimetallic composite, and a homogeneous dispersion of the MOF particles within the three-dimensional PUF scaffold. Zn and Co elements were identified using EDS analysis, and its percentage weights were found to be 27.54% and 10.98%, respectively. The functionalized foams exhibited a good removal performance in the dark conditions for Acid Red 88 and Methylene Blue, which can be explained by the homogeneous dispersion of active sites and the enhancement of mass-transfer pathways. Zn/Co-MOF composite exhibited the highest absorption capacity among all tested solvents, with values close to or over 40<ce:hsp sp=\"0.25\"></ce:hsp>g/g. Moreover, the modified foams show better hydrophobic organic liquids (including low-molecular-weight organic solvents) uptake and higher organic solvent absorption efficiency, which provides the combined effect of alginate-binder-assisted incorporation of Zn and Co-containing MOF domains, contributing to greater pore accessibility and greater oleophilicity. This work presents a novel method for the engineering of multifunctional MOF-functionalized PUF sorbents to achieve a promising platform for integrated organic-solvent absorption and dye removal that can be applied in practice for wastewater treatment systems.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"12 1","pages":"192230"},"PeriodicalIF":6.2,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359212","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":"Multifield-Modulated Electronic and Optical Properties of SnS2/ZrSe2 Type-I Heterostructure: From Strain-Induced Band Engineering to Electric-Field-Stable Photodetection","authors":"Hongfa Ran, Ju Shang, Tong Guo, Xinhai Wang, Xiu-Zhi Tang, Tiansheng Yang","doi":"10.1016/j.jallcom.2026.192214","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.192214","url":null,"abstract":"With the increasing demand for high-performance photodetectors in optical communication, environmental monitoring, and imaging, single two-dimensional materials suffer from weak light absorption, rapid carrier recombination, and fixed band gaps, hindering the simultaneous achievement of high responsivity, low dark current, and broad spectral response. Constructing van der Waals heterostructures is an effective strategy to overcome these limitations. Here, using first-principles calculations, we design a SnS<ce:inf loc=\"post\">2</ce:inf>/ZrSe<ce:inf loc=\"post\">2</ce:inf> heterostructure and systematically investigate its stability, electronic structure, optical properties, and strain/electric-field tunability. The heterostructure shows ultralow lattice mismatch and is thermodynamically stable at room temperature. It exhibits type-I band alignment, with the narrow gap of ZrSe<ce:inf loc=\"post\">2</ce:inf> nested inside the wider gap of SnS<ce:inf loc=\"post\">2</ce:inf>, giving a band gap of 1.43<ce:hsp sp=\"0.25\"></ce:hsp>eV. Photogenerated electrons and holes are confined in the ZrSe<ce:inf loc=\"post\">2</ce:inf> layer, and the SnS<ce:inf loc=\"post\">2</ce:inf> layer forms a barrier that blocks majority-carrier injection. The calculated carrier lifetime is 63.7 to 99.2 fs, indicating fast carrier recombination in this type-I heterostructure. The absorption coefficient is greatly enhanced in the visible-to-UV range, reaching 30.49% in the UV region. Biaxial strain continuously tunes the band gap from 0.65 to 1.63<ce:hsp sp=\"0.25\"></ce:hsp>eV and induces a type-I to type-II transition, allowing response tuning from short-wave infrared to visible light. The work-function tunability and excellent mechanical stability further support the potential of this heterostructure for practical optoelectronic applications. Under a vertical electric field, the structure maintains high stability, tunable charge transfer, and stable optical properties, offering unique anti-interference advantages in complex electromagnetic environments. Overall, this work identifies SnS<ce:inf loc=\"post\">2</ce:inf>/ZrSe<ce:inf loc=\"post\">2</ce:inf> as a promising candidate for further exploration in broadband-tunable and anti-electromagnetic-interference near-infrared photodetection.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"19 1","pages":"192214"},"PeriodicalIF":6.2,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359411","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}