Pub Date : 2026-01-15DOI: 10.1016/j.jallcom.2026.186229
Ying Wang, Hui Ding, Changyi Deng, Tingting Huang, Juan Xiao, Zhiwei Yu, GuanCheng Xu, Li Zhang
Conventional overall water splitting is limited by the high overpotential of the anodic oxygen evolution reaction (OER), causing high energy consumption. This study employs the thermodynamically more favorable hydrazine oxidation reaction (HzOR) to replace OER, and self-supported electrocatalysts with biphasic metal selenide heterointerfaces (Mn-CoSe2/(Ni,Co)Se2) with varying Mn doping contents are designed. Mn doping not only modifies the electron distribution of selenides but also accelerates electron transfer at heterointerfaces. Specifically, at a current density of 10 mA·cm−2, the catalyst exhibits a hydrogen evolution reaction (HER) overpotential of 97 mV and an HzOR potential of −0.020 V vs. RHE. When applied in the hydrazine-assisted electrolysis system, the electrode achieves a current density of 10 mA·cm−2 at an ultra-low cell voltage of 0.019 V and operates stably for 180 h at 100 mA·cm−2. This study lays a foundation for the rational design of high-performance HER/HzOR selenide electrocatalysts.
{"title":"Mn doping synergistic biphasic selenide heterointerfaces: Optimizing for efficient hydrazine oxidation-assisted hydrogen production","authors":"Ying Wang, Hui Ding, Changyi Deng, Tingting Huang, Juan Xiao, Zhiwei Yu, GuanCheng Xu, Li Zhang","doi":"10.1016/j.jallcom.2026.186229","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186229","url":null,"abstract":"Conventional overall water splitting is limited by the high overpotential of the anodic oxygen evolution reaction (OER), causing high energy consumption. This study employs the thermodynamically more favorable hydrazine oxidation reaction (HzOR) to replace OER, and self-supported electrocatalysts with biphasic metal selenide heterointerfaces (Mn-CoSe<sub>2</sub>/(Ni,Co)Se<sub>2</sub>) with varying Mn doping contents are designed. Mn doping not only modifies the electron distribution of selenides but also accelerates electron transfer at heterointerfaces. Specifically, at a current density of 10 mA·cm<sup>−2</sup>, the catalyst exhibits a hydrogen evolution reaction (HER) overpotential of 97 mV and an HzOR potential of −0.020 V vs. RHE. When applied in the hydrazine-assisted electrolysis system, the electrode achieves a current density of 10 mA·cm<sup>−2</sup> at an ultra-low cell voltage of 0.019 V and operates stably for 180 h at 100 mA·cm<sup>−2</sup>. This study lays a foundation for the rational design of high-performance HER/HzOR selenide electrocatalysts.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"46 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993428","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}
Pub Date : 2026-01-15DOI: 10.1016/j.jallcom.2026.186239
Mingxin Zhang , Xiaoliang Dong , Dan Yue , Liying Zhang , Haipeng Ji
Large K2SiF6:Mn4+ crystals that emit red light surpass conventional micro-powders in both hydrolytic stability and quantum efficiency. However, preparation of K2SiF6:Mn4+ crystals to > 1 mm while stabilizing Mn4+ valence has remained elusive. Herein, seed-assisted crystallization under a controlled cooling ramp from 25°C to –40°C was used which suppresses hydrolysis-driven reduction of [MnF6]2– and yields K2SiF6:Mn4+ crystals with near-unit quantum yield and unprecedented dimensions up to 3 mm—a 200 % size increase over the current record. After 5 h in water the crystals (>2 mm) retain 80.7 % of their initial emission intensity,outperforming sub-millimeter counterparts (58.9 %) and micro-sized powders (3.6 %). The single-crystal like nature enables superior internal/external quantum efficiencies of 97 %/82 % and preserves 82 % of the room-temperature intensity at 500 K. Warm-white LEDs built with these phosphor crystals deliver a high luminous efficacy of 157.3 lm/W and an R9 value of 79. This work demonstrates that crystal-growth engineering can unlock hydrolysis-resistant fluoride phosphors for high-power optoelectronics.
{"title":"Large-sized K2SiF6:Mn4+ phosphor crystals up to 3 mm grown by seeded growth with near-unity quantum efficiency","authors":"Mingxin Zhang , Xiaoliang Dong , Dan Yue , Liying Zhang , Haipeng Ji","doi":"10.1016/j.jallcom.2026.186239","DOIUrl":"10.1016/j.jallcom.2026.186239","url":null,"abstract":"<div><div>Large K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> crystals that emit red light surpass conventional micro-powders in both hydrolytic stability and quantum efficiency. However, preparation of K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> crystals to > 1 mm while stabilizing Mn<sup>4+</sup> valence has remained elusive. Herein, seed-assisted crystallization under a controlled cooling ramp from 25°C to –40°C was used which suppresses hydrolysis-driven reduction of [MnF<sub>6</sub>]<sup>2–</sup> and yields K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> crystals with near-unit quantum yield and unprecedented dimensions up to 3 mm—a 200 % size increase over the current record. After 5 h in water the crystals (>2 mm) retain 80.7 % of their initial emission intensity,outperforming sub-millimeter counterparts (58.9 %) and micro-sized powders (3.6 %). The single-crystal like nature enables superior internal/external quantum efficiencies of 97 %/82 % and preserves 82 % of the room-temperature intensity at 500 K. Warm-white LEDs built with these phosphor crystals deliver a high luminous efficacy of 157.3 lm/W and an <em>R</em><sub>9</sub> value of 79. This work demonstrates that crystal-growth engineering can unlock hydrolysis-resistant fluoride phosphors for high-power optoelectronics.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186239"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975813","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}
The electrocatalytic reduction of nitrate to ammonia (e-NO3-RR) presents a promising route for sustainable NH3 synthesis and wastewater remediation; however, it still confronts significant challenges, including insufficient NO2- generation and the competing hydrogen evolution reaction (HER). Herein, we report the development of a CuMoO4/FeMoO4 tandem catalyst designed to overcome these limitations. The catalyst achieves a high ammonia production rate of 27.86 mg h−1 cm−2 at −0.9 V versus RHE, with a Faradaic efficiency (FE) of 93.88 %. In situ investigations reveal a synergistic catalytic mechanism: CuMoO4 promotes the conversion of NO3- to NO2-, while FeMoO4 enriches *H species and facilitates the subsequent reduction of NO2⁻ to NH3. This tandem configuration establishes a dynamic relay pathway (NO3- → NO2- → NH3), enabling rapid consumption of the NO2- intermediate and enhancing the selectivity toward NH₃ formation. When integrated as a cathode in a Zn-NO3- battery, the system delivers a peak power density of 4.13 mW cm−2 along with an NH3 production rate of 1.87 mg h−1 cm−2. This approach thus enables the simultaneous removal of NO3- pollutants, production of value-added NH3, and generation of electrical power. This work elucidates the synergistic interplay between CuMoO4 and FeMoO4, offering a rational strategy for the design of efficient tandem electrocatalysts for nitrate elimination and ammonia synthesis.
{"title":"High-efficiency ammonia production via electrochemical nitrate reduction on a CuMoO4/FeMoO4 tandem catalyst","authors":"Shiyi Liu, Jun Ma, Longbing Zuo, Shuo Geng, Fangchao Lou, Guidong Xu","doi":"10.1016/j.jallcom.2026.186227","DOIUrl":"10.1016/j.jallcom.2026.186227","url":null,"abstract":"<div><div>The electrocatalytic reduction of nitrate to ammonia (e-NO<sub>3</sub><sup>-</sup>RR) presents a promising route for sustainable NH<sub>3</sub> synthesis and wastewater remediation; however, it still confronts significant challenges, including insufficient NO<sub>2</sub><sup>-</sup> generation and the competing hydrogen evolution reaction (HER). Herein, we report the development of a CuMoO<sub>4</sub>/FeMoO<sub>4</sub> tandem catalyst designed to overcome these limitations. The catalyst achieves a high ammonia production rate of 27.86 mg h<sup>−1</sup> cm<sup>−2</sup> at −0.9 V versus RHE, with a Faradaic efficiency (FE) of 93.88 %. In situ investigations reveal a synergistic catalytic mechanism: CuMoO<sub>4</sub> promotes the conversion of NO<sub>3</sub><sup>-</sup> to NO<sub>2</sub><sup>-</sup>, while FeMoO<sub>4</sub> enriches *H species and facilitates the subsequent reduction of NO<sub>2</sub>⁻ to NH<sub>3</sub>. This tandem configuration establishes a dynamic relay pathway (NO<sub>3</sub><sup>-</sup> → NO<sub>2</sub><sup>-</sup> → NH<sub>3</sub>), enabling rapid consumption of the NO<sub>2</sub><sup>-</sup> intermediate and enhancing the selectivity toward NH₃ formation. When integrated as a cathode in a Zn-NO<sub>3</sub><sup>-</sup> battery, the system delivers a peak power density of 4.13 mW cm<sup>−2</sup> along with an NH<sub>3</sub> production rate of 1.87 mg h<sup>−1</sup> cm<sup>−2</sup>. This approach thus enables the simultaneous removal of NO<sub>3</sub><sup>-</sup> pollutants, production of value-added NH<sub>3</sub>, and generation of electrical power. This work elucidates the synergistic interplay between CuMoO<sub>4</sub> and FeMoO<sub>4</sub>, offering a rational strategy for the design of efficient tandem electrocatalysts for nitrate elimination and ammonia synthesis.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186227"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145968500","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}
Pub Date : 2026-01-15DOI: 10.1016/j.jallcom.2026.186226
Lu Liu , Miaomiao Chen , Hanning Wang , Nan Hu , Bo Qi , Tiehua Chen , Xiao Zhang , Yonglei An
MIL-100(Fe) is limited in the photo-Fenton catalytic treatment of refractory organic wastewater due to the easy recombination of photo-generated carriers and insufficient active sites. Herein, this study constructed a Nanodiamond(ND)-scaffolded supported MIL-100(Fe) (MIL/ND) composite material, and its electrochemical double-layer capacitor is 12 times than that of MIL-100 (Fe). The MIL/ND achieves a degradation rate up to 99.9 % for methylene blue and total organic carbon mineralization rate of 78.1 %, significantly outperforming pure MIL-100(Fe). The superior degradation performance of MIL/ND mainly originates from the σ-π coordination formed between the C and Fe orbitals, which promotes the separation of photo-generated carriers. The low-spin Fe3+ enhances electron transfer at the Fe center, accelerating the Fe3+/Fe2+ cycle and •OH generation, thereby improving photo-Fenton activity. Thermodynamic analysis reveals a 0.08 eV reduction in Gibbs free energy for MIL/ND, indicating a more favorable reaction pathway. This study offers an ultra-efficient MIL/ND material for enhanced photo-Fenton degradation of refractory organic wastewater.
{"title":"Nanodiamond-scaffolded MIL-100(Fe) with tunable photoelectron behavior and enriched photo-Fenton active sites for ultra-efficient refractory wastewater treatment","authors":"Lu Liu , Miaomiao Chen , Hanning Wang , Nan Hu , Bo Qi , Tiehua Chen , Xiao Zhang , Yonglei An","doi":"10.1016/j.jallcom.2026.186226","DOIUrl":"10.1016/j.jallcom.2026.186226","url":null,"abstract":"<div><div>MIL-100(Fe) is limited in the photo-Fenton catalytic treatment of refractory organic wastewater due to the easy recombination of photo-generated carriers and insufficient active sites. Herein, this study constructed a Nanodiamond(ND)-scaffolded supported MIL-100(Fe) (MIL/ND) composite material, and its electrochemical double-layer capacitor is 12 times than that of MIL-100 (Fe). The MIL/ND achieves a degradation rate up to 99.9 % for methylene blue and total organic carbon mineralization rate of 78.1 %, significantly outperforming pure MIL-100(Fe). The superior degradation performance of MIL/ND mainly originates from the σ-π coordination formed between the C and Fe orbitals, which promotes the separation of photo-generated carriers. The low-spin Fe<sup>3</sup><sup>+</sup> enhances electron transfer at the Fe center, accelerating the Fe<sup>3+</sup>/Fe<sup>2+</sup> cycle and •OH generation, thereby improving photo-Fenton activity. Thermodynamic analysis reveals a 0.08 eV reduction in Gibbs free energy for MIL/ND, indicating a more favorable reaction pathway. This study offers an ultra-efficient MIL/ND material for enhanced photo-Fenton degradation of refractory organic wastewater.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186226"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975937","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}
Pub Date : 2026-01-15DOI: 10.1016/j.jallcom.2026.186168
Shanyukta Upadhyay, Manoj Balachandran
This research demonstrates a facile method for implementing bimetallic Cu-Pd-doped MoS2/Carbon fiber composites as a transparent counter electrode for bifacial dye-sensitised solar cell (DSSC) applications. The inert properties of the basal plane significantly limit the catalytic capabilities of MoS2. This limitation is alleviated through the incorporation of carbon fibers, owing to their excellent conductivity, catalytic activity, and stable structure. Cu and Pd nanoparticles were incorporated into MoS2, carbon fibers and a mixed MoS2/carbon fibers matrix via a one-step hydrothermal method. The structural, morphological, and catalytic properties were systematically investigated through microscopic studies, Cyclic Voltammetry, and Tafel analysis. Electrochemical Impedance Spectroscopy recorded charge transfer resistance RCT values for CuPdCNF, CuPdMS, and CuPdMSCNF are 16.50, 10.62, and 7.5 Ω, respectively, attributed to the addition of metals that can alter both the geometric and electronic structures on the metal surface, which are closely associated with their catalytic efficiency. This approach has led to a significant enhancement in both short-circuit current density and overall efficiency with respect to bare MoS2 and Pt. The cells exhibited current densities of 16.00 mA/cm², 16.19 mA/cm², and 16.71 mA/cm², with corresponding efficiencies of 7.03 %, 6.86 %, and 7.77 %, respectively, under front illumination for CuPd-CNF, CuPd-MS, and CuPdMSCNF. Additionally, the introduction of these bimetallic NPs within the carbon and MoS2 matrix further increases the active site for catalytic reduction. The combination of significant efficiency and rear illumination adaptability underscores the strong potential for practical use in bifacial solar cell configurations.
{"title":"Transparent Cu-Pd decorated MoS2@functionalized carbon nanofiber composite counter electrodes: Efficient bifacial dye-sensitized solar cell","authors":"Shanyukta Upadhyay, Manoj Balachandran","doi":"10.1016/j.jallcom.2026.186168","DOIUrl":"10.1016/j.jallcom.2026.186168","url":null,"abstract":"<div><div>This research demonstrates a facile method for implementing bimetallic Cu-Pd-doped MoS<sub>2</sub>/Carbon fiber composites as a transparent counter electrode for bifacial dye-sensitised solar cell (DSSC) applications. The inert properties of the basal plane significantly limit the catalytic capabilities of MoS<sub>2</sub>. This limitation is alleviated through the incorporation of carbon fibers, owing to their excellent conductivity, catalytic activity, and stable structure. Cu and Pd nanoparticles were incorporated into MoS<sub>2</sub>, carbon fibers and a mixed MoS<sub>2</sub>/carbon fibers matrix via a one-step hydrothermal method. The structural, morphological, and catalytic properties were systematically investigated through microscopic studies, Cyclic Voltammetry, and Tafel analysis. Electrochemical Impedance Spectroscopy recorded charge transfer resistance R<sub>CT</sub> values for CuPdCNF, CuPdMS, and CuPdMSCNF are 16.50, 10.62, and 7.5 Ω, respectively, attributed to the addition of metals that can alter both the geometric and electronic structures on the metal surface, which are closely associated with their catalytic efficiency. This approach has led to a significant enhancement in both short-circuit current density and overall efficiency with respect to bare MoS<sub>2</sub> and Pt. The cells exhibited current densities of 16.00 mA/cm², 16.19 mA/cm², and 16.71 mA/cm², with corresponding efficiencies of 7.03 %, 6.86 %, and 7.77 %, respectively, under front illumination for CuPd-CNF, CuPd-MS, and CuPdMSCNF. Additionally, the introduction of these bimetallic NPs within the carbon and MoS<sub>2</sub> matrix further increases the active site for catalytic reduction. The combination of significant efficiency and rear illumination adaptability underscores the strong potential for practical use in bifacial solar cell configurations.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186168"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976009","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}
Overcoming the strength-corrosion resistance trade-off is crucial for developing lightweight and high-strength aluminum alloys for aerospace applications. The effects of Sc and Sc/Er co-addition on the microstructure, mechanical properties and corrosion behavior of rolled Al-Zn-Mg alloys were investigated. Compared with the addition of Sc, the Sc/Er co-addition resulted in a higher yield strength (336 MPa) and greater elongation (18 %) and improved the corrosion performance, as evidenced by an improvement in the exfoliation corrosion rating from EB to EA, and reductions in the penetration depth from 420.6 μm to 363.7 μm and the intergranular corrosion depth from 98.2 μm to 56.1 μm. The microstructural characterization showed that the Sc/Er co-addition enhanced precipitation strengthening through the formation of high-density, fine η′-MgZn2 phase and δ′-Al3(Er,Sc,Zr) nanoparticles, and reduced the recrystallization inhibition force () slightly, compared with the Sc-addition. The enhanced corrosion resistance was attributed to the formation of discontinuous precipitates along grain boundaries with a reduced width of precipitate-free zone, and fine recrystallized grains. These results demonstrate that the Sc/Er co-addition produces a synergistic effect, improving the mechanical properties and corrosion resistance simultaneously.
{"title":"Effect of Er and Sc additions on microstructure, mechanical properties and corrosion behaviors of hot rolled Al-Zn-Mg alloy","authors":"Zhizheng Rong, Xiaolan Wu, Yang Liu, Xiangyuan Xiong, Xueqin Zhang, Fangyan He, Shengping Wen, Kunyuan Gao, Wu Wei, Hui Huang, Zuoren Nie","doi":"10.1016/j.jallcom.2026.186236","DOIUrl":"10.1016/j.jallcom.2026.186236","url":null,"abstract":"<div><div>Overcoming the strength-corrosion resistance trade-off is crucial for developing lightweight and high-strength aluminum alloys for aerospace applications. The effects of Sc and Sc/Er co-addition on the microstructure, mechanical properties and corrosion behavior of rolled Al-Zn-Mg alloys were investigated. Compared with the addition of Sc, the Sc/Er co-addition resulted in a higher yield strength (336 MPa) and greater elongation (18 %) and improved the corrosion performance, as evidenced by an improvement in the exfoliation corrosion rating from EB to EA, and reductions in the penetration depth from 420.6 μm to 363.7 μm and the intergranular corrosion depth from 98.2 μm to 56.1 μm. The microstructural characterization showed that the Sc/Er co-addition enhanced precipitation strengthening through the formation of high-density, fine η′-MgZn<sub>2</sub> phase and δ′-Al<sub>3</sub>(Er,Sc,Zr) nanoparticles, and reduced the recrystallization inhibition force (<span><math><msub><mrow><mi>F</mi></mrow><mrow><mi>r</mi></mrow></msub></math></span>) slightly, compared with the Sc-addition. The enhanced corrosion resistance was attributed to the formation of discontinuous precipitates along grain boundaries with a reduced width of precipitate-free zone, and fine recrystallized grains. These results demonstrate that the Sc/Er co-addition produces a synergistic effect, improving the mechanical properties and corrosion resistance simultaneously.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186236"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975895","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}
Pub Date : 2026-01-15DOI: 10.1016/j.jallcom.2026.186224
Xiangyu Yin , Ye Zhao , Shuai Li , Chunxiao Lu , Yigui Sun , Junyan Zhang , Xuanhang Wang , Zhongzhi Wang , Huijing Yang , Yong Li , Qiwei Zhang
Photochromic flexible materials have demonstrated broad applications in wearable devices due to their conformability, fast photo-response, and long cycling lifetime. However, single-component organic or inorganic systems often face challenges in balancing flexibility with reversible cycling stability. Herein, BaMgSiO4:Eu2 + (BMS:Eu) and BaMgSiO4:Eu2+/Fe3+ (BMS:Eu/Fe)-based photochromic flexible films were fabricated by embedding inorganic powders into thermoplastic polyurethane (TPU) via electrospinning technique. Under 365 nm irradiation, the BMS:Eu/Fe system exhibits superior photochromic performance (ΔR = 37.78 %), whereas the BMS:Eu system shows higher photoluminescence modulation capability (ΔRi = 25.63 %). Both systems achieve their maximum optical response within 5 s and maintain stable performance over 10 cycles. This work realizes a dual-mode photochromic-photoluminescent response and visual regulation under 365 nm excitation, showing potential applications in wearable technology and smart clothing.
{"title":"Reversible photochromism and luminescent modulation in BaMgSiO4-based flexible films for wearable textiles","authors":"Xiangyu Yin , Ye Zhao , Shuai Li , Chunxiao Lu , Yigui Sun , Junyan Zhang , Xuanhang Wang , Zhongzhi Wang , Huijing Yang , Yong Li , Qiwei Zhang","doi":"10.1016/j.jallcom.2026.186224","DOIUrl":"10.1016/j.jallcom.2026.186224","url":null,"abstract":"<div><div>Photochromic flexible materials have demonstrated broad applications in wearable devices due to their conformability, fast photo-response, and long cycling lifetime. However, single-component organic or inorganic systems often face challenges in balancing flexibility with reversible cycling stability. Herein, BaMgSiO<sub>4</sub>:Eu<sup>2 +</sup> (BMS:Eu) and BaMgSiO<sub>4</sub>:Eu<sup>2+</sup>/Fe<sup>3+</sup> (BMS:Eu/Fe)-based photochromic flexible films were fabricated by embedding inorganic powders into thermoplastic polyurethane (TPU) via electrospinning technique. Under 365 nm irradiation, the BMS:Eu/Fe system exhibits superior photochromic performance (Δ<em>R</em> = 37.78 %), whereas the BMS:Eu system shows higher photoluminescence modulation capability (Δ<em>R</em><sub><em>i</em></sub> = 25.63 %). Both systems achieve their maximum optical response within 5 s and maintain stable performance over 10 cycles. This work realizes a dual-mode photochromic-photoluminescent response and visual regulation under 365 nm excitation, showing potential applications in wearable technology and smart clothing.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186224"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145968499","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}
Pub Date : 2026-01-15DOI: 10.1016/j.jallcom.2026.186218
Weiwei Jiang , Long Huang , Hang Zhang , Xiangxu Zeng , Yuhao He , Jiajin Wei , Congbin Zeng , Jin Xiao , Junhuai Xiang , Fugen Sun
Ag doped porous Mn3O4 were in-situ grown on the commercial 3D carbon fiber clothes (CFCs) through a facial hydrothermal method, and then used as skeletons (Mn3O4/Ag@CFC) to pre-store Li metal for preparing Li composite anodes. Owing to super lithiophilicity of the doped Ag and driving forces from the redox reaction involving Mn3O4 and molten Li, the Mn3O4/Ag@CFC skeletons can be quickly and fully impregnated with molten Li to form the Li-Mn/Ag@CFC composite anodes. Furthermore, the super-lithiophilic Ag doped in the Mn3O4 could maintain the high conductivity and durable lithiophilicity of the formed Ag/Mn/Li2O composite coating layers on the CFCs skeletons after molten Li impregnation, which could significantly lower the nucleation overpotential and deposition resistance of Li metal upon the subsequent charge/discharge cycling. Hence, a low and stable deposition overpotential of 15 mV is achieved for the Li-Mn/Ag@CFC symmetric cells after 900 cycles (600 h) under a current density of 3 mA cm−2. When coupled with S/C and NCM811 cathodes, the Li-Mn/Ag@CFC composite anodes also enable coin-type full cells with superior cycling stability and rate capability. These encouraging findings demonstrate that doping super-lithiophilic Ag into 3D skeletons is a promising strategy for improving the electrochemical performances of advanced Li metal anodes.
采用表面水热法在商用3D碳纤维衣服（CFCs）上原位生长Ag掺杂多孔Mn3O4，然后作为骨架（Mn3O4/Ag@CFC）预储Li金属，用于制备Li复合阳极。由于掺杂Ag的超亲石性以及Mn3O4和熔融锂氧化还原反应的驱动作用，Mn3O4/Ag@CFC骨架可以快速、充分地浸渍熔融锂，形成Li- mn /Ag@CFC复合阳极。此外，在Mn3O4中掺杂超亲锂银可以保持熔融锂浸渍后在CFCs骨架上形成的Ag/Mn/Li2O复合涂层的高导电性和持久的亲锂性，从而显著降低锂金属在后续充放电循环中的成核过电位和沉积电阻。因此，在3 mA cm−2的电流密度下，经过900次循环（600 h）后，Li-Mn/Ag@CFC对称电池的沉积过电位低而稳定，为15 mV。当与S/C和NCM811阴极耦合时，Li-Mn/Ag@CFC复合阳极也使硬币型全电池具有卓越的循环稳定性和倍率能力。这些令人鼓舞的发现表明，在3D骨架中掺杂超亲锂银是一种有希望改善先进锂金属阳极电化学性能的策略。
{"title":"In situ growth of super-lithiophilic Ag-doped porous Mn3O4 on 3D carbon fiber cloth skeletons for dendrite-free lithium metal anodes","authors":"Weiwei Jiang , Long Huang , Hang Zhang , Xiangxu Zeng , Yuhao He , Jiajin Wei , Congbin Zeng , Jin Xiao , Junhuai Xiang , Fugen Sun","doi":"10.1016/j.jallcom.2026.186218","DOIUrl":"10.1016/j.jallcom.2026.186218","url":null,"abstract":"<div><div>Ag doped porous Mn<sub>3</sub>O<sub>4</sub> were <em>in-situ</em> grown on the commercial 3D carbon fiber clothes (CFCs) through a facial hydrothermal method, and then used as skeletons (Mn<sub>3</sub>O<sub>4</sub>/Ag@CFC) to pre-store Li metal for preparing Li composite anodes. Owing to super lithiophilicity of the doped Ag and driving forces from the redox reaction involving Mn<sub>3</sub>O<sub>4</sub> and molten Li, the Mn<sub>3</sub>O<sub>4</sub>/Ag@CFC skeletons can be quickly and fully impregnated with molten Li to form the Li-Mn/Ag@CFC composite anodes. Furthermore, the super-lithiophilic Ag doped in the Mn<sub>3</sub>O<sub>4</sub> could maintain the high conductivity and durable lithiophilicity of the formed Ag/Mn/Li<sub>2</sub>O composite coating layers on the CFCs skeletons after molten Li impregnation, which could significantly lower the nucleation overpotential and deposition resistance of Li metal upon the subsequent charge/discharge cycling. Hence, a low and stable deposition overpotential of 15 mV is achieved for the Li-Mn/Ag@CFC symmetric cells after 900 cycles (600 h) under a current density of 3 mA cm<sup>−2</sup>. When coupled with S/C and NCM811 cathodes, the Li-Mn/Ag@CFC composite anodes also enable coin-type full cells with superior cycling stability and rate capability. These encouraging findings demonstrate that doping super-lithiophilic Ag into 3D skeletons is a promising strategy for improving the electrochemical performances of advanced Li metal anodes.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186218"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975815","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}
Pub Date : 2026-01-15DOI: 10.1016/j.jallcom.2026.186238
Yongliang Zhang , Shuo Zhu , Linfeng Liang , Wei Yu , Runjun He , Lingli Kong , Yun Wang , Lei Cheng
Nitriding significantly enhances the surface hardness and wear resistance of titanium alloys, yet its specific role in governing corrosion resistance within marine atmospheric environments remains insufficiently understood. This study systematically investigates the corrosion behavior and mechanism of plasma-nitrided near-α titanium alloy TC6 through prolonged salt spray testing (120–1440 h). Utilizing XRD, SEM, HRTEM, and XPS, comparative analysis shows that the nitrided TC6 possesses a compound layer which features an outer TiN and inner Ti2N structure, leading to a corrosion rate that is only 1/6–1/2 of the untreated alloy's. Post-corrosion, the untreated surface primarily forms a crystalline TiO2 layer alongside TiO and Ti2O3. In stark contrast, the nitrided TC6 develops a unique, protective amorphous oxygen-rich surface film composed of TiO2 and TiOxNy, supplemented by adsorbed nitrogen. This composite barrier, originating from the oxidation of TiN, effectively impedes chloride ion (Cl-) penetration. The findings elucidate that the superior corrosion resistance of nitrided TC6 is attributed to this synergistic effect of a chemically stable amorphous layer and interfacial adsorbed nitrogen, providing a mechanistic insight for designing corrosion-resistant titanium components in aggressive marine service.
{"title":"Corrosion behavior and resistance mechanism of nitrided near α-titanium alloy in the simulated marine atmospheric environment","authors":"Yongliang Zhang , Shuo Zhu , Linfeng Liang , Wei Yu , Runjun He , Lingli Kong , Yun Wang , Lei Cheng","doi":"10.1016/j.jallcom.2026.186238","DOIUrl":"10.1016/j.jallcom.2026.186238","url":null,"abstract":"<div><div>Nitriding significantly enhances the surface hardness and wear resistance of titanium alloys, yet its specific role in governing corrosion resistance within marine atmospheric environments remains insufficiently understood. This study systematically investigates the corrosion behavior and mechanism of plasma-nitrided near-α titanium alloy TC6 through prolonged salt spray testing (120–1440 h). Utilizing XRD, SEM, HRTEM, and XPS, comparative analysis shows that the nitrided TC6 possesses a compound layer which features an outer TiN and inner Ti<sub>2</sub>N structure, leading to a corrosion rate that is only 1/6–1/2 of the untreated alloy's. Post-corrosion, the untreated surface primarily forms a crystalline TiO<sub>2</sub> layer alongside TiO and Ti<sub>2</sub>O<sub>3</sub>. In stark contrast, the nitrided TC6 develops a unique, protective amorphous oxygen-rich surface film composed of TiO<sub>2</sub> and TiO<sub>x</sub>N<sub>y</sub>, supplemented by adsorbed nitrogen. This composite barrier, originating from the oxidation of TiN, effectively impedes chloride ion (Cl<sup>-</sup>) penetration. The findings elucidate that the superior corrosion resistance of nitrided TC6 is attributed to this synergistic effect of a chemically stable amorphous layer and interfacial adsorbed nitrogen, providing a mechanistic insight for designing corrosion-resistant titanium components in aggressive marine service.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186238"},"PeriodicalIF":6.3,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975894","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}
Pub Date : 2026-01-14DOI: 10.1016/j.jallcom.2026.186199
Dharita Chandravanshi , Dipanjan Kumar , Dova Kalyan , Surendra Kumar Makineni , N. Ravishankar , Praveen C. Ramamurthy , Kamanio Chattopadhyay
Microstructure plays important role in developing thermoelectric materials. In recent times, half-Heusler alloys have attracted attention as an important class of thermoelectric material. In this work, we investigate the Ni-rich quaternary ZrFe0.4Ni0.6Sb (termed Ni-60) which is known to form double half-Heusler structure. Through controlled isothermal heat treatments at 1173 K for various times, we map the structural evolution from a matrix phase with an orthorhombic crystal structure with Fe-rich segregates at the dendritic boundaries, to a diffusion-controlled growth of half-Heusler phase (hH phase) with two distinct morphologies. An initial diffusion-controlled growth from the dendritic boundaries (BhH) is followed by a unique plate-like growth of the hH phase (PLM) in the residual orthorhombic matrix. Detailed microscopy and crystallographic analysis show that these hH plates grow with a distinct orientation relation. Contrary to this, the hH islands that nucleate and grow from the iron rich segregates at the dendritic boundaries do not exhibit orientation relation with the orthorhombic matrix. The interface between the hH plate and orthorhombic matrix for plates is semi-coherent. These discrete transformation pathways compete yielding a complex microstructure that is expected to have an influence on the reported thermoelectric properties.
{"title":"Phase & microstructural evolution in heat-treated Zr2Fe0.8Ni1.2Sb2 double half-Heusler compound","authors":"Dharita Chandravanshi , Dipanjan Kumar , Dova Kalyan , Surendra Kumar Makineni , N. Ravishankar , Praveen C. Ramamurthy , Kamanio Chattopadhyay","doi":"10.1016/j.jallcom.2026.186199","DOIUrl":"10.1016/j.jallcom.2026.186199","url":null,"abstract":"<div><div>Microstructure plays important role in developing thermoelectric materials. In recent times, half-Heusler alloys have attracted attention as an important class of thermoelectric material. In this work, we investigate the Ni-rich quaternary ZrFe<sub>0.4</sub>Ni<sub>0.6</sub>Sb (termed Ni-60) which is known to form double half-Heusler structure. Through controlled isothermal heat treatments at 1173 K for various times, we map the structural evolution from a matrix phase with an orthorhombic crystal structure with Fe-rich segregates at the dendritic boundaries, to a diffusion-controlled growth of half-Heusler phase (hH phase) with two distinct morphologies. An initial diffusion-controlled growth from the dendritic boundaries (BhH) is followed by a unique plate-like growth of the hH phase (PLM) in the residual orthorhombic matrix. Detailed microscopy and crystallographic analysis show that these hH plates grow with a distinct orientation relation. Contrary to this, the hH islands that nucleate and grow from the iron rich segregates at the dendritic boundaries do not exhibit orientation relation with the orthorhombic matrix. The interface between the hH plate and orthorhombic matrix for plates is semi-coherent. These discrete transformation pathways compete yielding a complex microstructure that is expected to have an influence on the reported thermoelectric properties.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1053 ","pages":"Article 186199"},"PeriodicalIF":6.3,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145961816","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}
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