Journal of Alloys and Compounds最新文献_第2页

A high-performance aqueous asymmetric supercapacitor based on dual redox-electrolyte enhanced systems

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178923

Yiqiu Xiao, Shuling Liao, Chong Peng, Siyong Li, Shetian Liu, Siyu Yu

{"title":"A high-performance aqueous asymmetric supercapacitor based on dual redox-electrolyte enhanced systems","authors":"Yiqiu Xiao, Shuling Liao, Chong Peng, Siyong Li, Shetian Liu, Siyu Yu","doi":"10.1016/j.jallcom.2025.178923","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178923","url":null,"abstract":"Aqueous supercapacitors (SCs) have attracted extensive attention owing to the low cost, high safety, easy handling, environment friendliness and high ionic conductivity of aqueous electrolytes. However, their energy density is constrained by the voltage threshold of water decomposition. To overcome this limitation, asymmetric SCs (ASCs) have been designed to expand the cell voltage. Moreover, the development of novel electrode materials and suitable redox-active electrolytes holds promise for achieving enhanced capacitance and increased energy density. In the present study, Ni(OH)2/Mn (hydr)oxide was loaded on activated carbon cloth via an electrochemical deposition method. It was then paired with a redox electrolyte of KOH + [Fe(CN)6]3-/4- to serve as the positive compartment for the construction of a redox electrolyte enhanced aqueous ASC. Meanwhile, electrochemically activated carbon cloth coupled with a KOH + p-phenylenediamine redox electrolyte was utilized as the negative compartment. The resulting aqueous ASC exhibited a broad cell voltage of 1.7 V and a high capacitance of 410.8 mF cm-2 at a current density of 40 mA cm-2. Its energy density reached 3.7 Wh L-1 at a power density of 396.2 W L-1, which remained 2.2 Wh L-1 even at a higher power density of 776.9 W L-1. This work provides an efficient strategy for fabricating high-performance aqueous SCs.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"33 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vibrational properties of photochromic yttrium oxyhydride and oxydeuteride thin films

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178917

M. Zubkins, J. Gabrusenoks, R. Aleksis, G. Chikvaidze, E. Strods, V. Vibornijs, A. Lends, K. Kundzins, J. Purans

{"title":"Vibrational properties of photochromic yttrium oxyhydride and oxydeuteride thin films","authors":"M. Zubkins, J. Gabrusenoks, R. Aleksis, G. Chikvaidze, E. Strods, V. Vibornijs, A. Lends, K. Kundzins, J. Purans","doi":"10.1016/j.jallcom.2025.178917","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178917","url":null,"abstract":"A comprehensive study of the vibrational properties of photochromic yttrium oxyhydride (YHO) and oxydeuteride (YDO) thin films is presented. These films are deposited using reactive magnetron sputtering, followed by post-oxidation. Our investigation employs vibrational Fourier-transform infrared (FTIR) spectroscopy, in conjunction with first-principles Density Functional Theory (DFT) calculations. The FTIR spectra of the films reveal broad vibrational bands, primarily attributed to the disordered structure containing small crystallites (<10 nm), as confirmed by solid-state nuclear magnetic resonance and X-ray diffraction measurements. An isotopic shift from approximately 900 to 745 cm−1 is observed in the hydrogen/deuterium-related vibration band, while the lower frequency bands (< 600 cm−1) remain unaffected upon replacement of hydrogen with deuterium. These experimental observations are consistent with the DFT theoretical calculations for various stable YHO lattices reported in the literature. Illumination of the films with ultraviolet light at 3.3 eV leads to additional absorption not only in the visible light range but also up to approximately 2000 cm−1 in the mid-infrared region. However, no phase transformation change or formation of hydroxyl (OH) groups are observed following illumination. Our findings provide valuable insight into the vibrational and photochromic properties of YH(D)O thin films.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"130 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved crystal quality of β-Ga2O3 on sapphire (0001) substrates by induced-nucleation technique and enhancement of Ga2O3 UV photodetectors performance

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178924

Lei Xie, Shengrui Xu, Tao Zhang, Hongchang Tao, Huake Su, Yuan Gao, Xu Liu, Yachao Zhang, Jincheng Zhang, Yue Hao

引用次数: 0

Multi-phase Structure Electrospun CNF@Ag/Mn/Bi/Fe Composite Nanofiber Enhanced Supercapacitor Behavior

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178922

Tanayt Sinprachim, Narit Klompong, Narong Chanlek, Pinit Kidkhunthod, Santi Maensiri, Surapong Siripongdee, Wawmayura Chamsuk, Yasuharu Ohgoe, Panakamon Thouglor, Naphat Albutt, Somchai Sonsupap

{"title":"Multi-phase Structure Electrospun CNF@Ag/Mn/Bi/Fe Composite Nanofiber Enhanced Supercapacitor Behavior","authors":"Tanayt Sinprachim, Narit Klompong, Narong Chanlek, Pinit Kidkhunthod, Santi Maensiri, Surapong Siripongdee, Wawmayura Chamsuk, Yasuharu Ohgoe, Panakamon Thouglor, Naphat Albutt, Somchai Sonsupap","doi":"10.1016/j.jallcom.2025.178922","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178922","url":null,"abstract":"This study presents the development of carbon-based multiphase metal oxide nanocomposites (CNF@MOx; M = Ag, Mn, Bi, and Fe) incorporating silver, manganese, bismuth, and iron nanoparticles within polyacrylonitrile (PAN)-derived carbon nanofibers. These nanocomposites were fabricated via the electrospinning technique with metal oxide concentrations of 10, 20, and 40%w. This was followed by annealing in an argon atmosphere. The resulting nanofibers exhibited diameters ranging from 559 to 830 nm, with embedded nanoparticles measuring from 9 to 21 nm. Comprehensive characterization revealed that the nanofibers possessed uniform morphology, high porosity, and robust thermal stability. X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) confirmed the valence states of the metal oxides (Ag⁰, Bi³⁺, Mn²⁺, Mn³⁺, Fe²⁺, and Fe³⁺), which are integral to redox reactions and charge storage mechanisms. Among the fabricated composites, CNF@Ag/Mn/Bi/Fe-20 demonstrated the best electrochemical performance, achieving a specific capacitance of 156 F·g-1 at a scan rate of 2 mV·s-1 and outstanding cycling stability with a capacity retention of over 96% after 1400 charge-discharge cycles. The synergistic combination of double-layer capacitance and pseudocapacitance mechanisms in these nanofibers represents a significant improvement over conventional electrode material. This study highlights CNF@Ag/Mn/Bi/Fe nanocomposites as highly promising candidates for advanced energy storage applications, particularly in supercapacitor technologies.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"29 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of SiC particles on the microstructures and mechanical properties of Mg–9Al–1Zn based composites

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178908

Qingshan Yang, Xianzheng Li, Jun Xu, CuiCui Yin, Xiaohui Zhang, Hong Yang, Nan Zhou, Jianyue Zhang, Kaihong Zheng, Bin Jiang, Fusheng Pan

{"title":"Effect of SiC particles on the microstructures and mechanical properties of Mg–9Al–1Zn based composites","authors":"Qingshan Yang, Xianzheng Li, Jun Xu, CuiCui Yin, Xiaohui Zhang, Hong Yang, Nan Zhou, Jianyue Zhang, Kaihong Zheng, Bin Jiang, Fusheng Pan","doi":"10.1016/j.jallcom.2025.178908","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178908","url":null,"abstract":"The interfacial bonding between SiC and matrix in magnesium matrix composites (MMCs) has a crucial influence on their properties. In this work, SiC/AZ91 composites were prepared by stir casting and hot extruded. It was found that SiC refines grain size and decrease texture strength. The nano-state interfacial products Mg2Si and MgO adhered to the SiC surface, facilitating load transfer. The Al4C3 and Mg₃₂(Al,Zn)₄₉ are present near SiC, the brittleness of Al4C3 reduces the composite plasticity. After adding 1 wt.% SiC, the yield strength (YS), ultimate tensile strength (UTS) and elongation (El) of AZ91 alloy increased to 250 MPa, 350 MPa and 15.1%, respectively. El increased by more than 20%. Higher SiC content increased YS, but UTS and El decreased significantly. The addition of few SiC can improve the properties, while high SiC content can bring excessive interfacial reaction and lead to degradation of composite properties.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"120 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cu2ZnSnS4 microflower doped Cr and its potential application for solar cell devices

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178915

Tahta Amrillah, Ghilman Ghariy

{"title":"Cu2ZnSnS4 microflower doped Cr and its potential application for solar cell devices","authors":"Tahta Amrillah, Ghilman Ghariy","doi":"10.1016/j.jallcom.2025.178915","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178915","url":null,"abstract":"Cu2ZnSnS4 (CZTS) is considered as the next-generation solar cell that can replace several commercialized solar cells such as Silicon (Si)- and CuInGaSe2 (CIGS)-solar cells due to their cost-effectiveness, eco-friendliness, and good stability. However, the overall performance of CZTS solar cells is considered poor. To increase the performance of CZTS solar cells, here we doped CZTS with chromium (Cr) to modulate their optoelectronic properties. The synthesized CZTS form a spherical microflower consisting of nanoflakes cluster which we believe that this morphology could provide many active sites and possess high surface energy to support their photovoltaic performances. The addition of a Cr dopant could decrease the formation of the secondary phase which could benefit to enhance their performance as absorber material for solar cell devices. We analyze in detail the crystal and electronic structures as well as morphology of the obtained CZTS samples to understand their optoelectronics properties that further influence their implementation for solar cells. We believe that this study could open further exploration on searching for an appropriate dopant for CZTS and its morphologies development, hence, high-performance CZTS solar cells could be realized.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"53 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of crystalline/amorphous heterostructures to enhance the supercapacitor performance of a high-entropy sulfide

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178921

Kang Chen, Huidong Xie, Hanyu Yang, Guoping Han, Jingxuan Chen, Hu Liu

{"title":"Construction of crystalline/amorphous heterostructures to enhance the supercapacitor performance of a high-entropy sulfide","authors":"Kang Chen, Huidong Xie, Hanyu Yang, Guoping Han, Jingxuan Chen, Hu Liu","doi":"10.1016/j.jallcom.2025.178921","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178921","url":null,"abstract":"High-entropy materials show promising potential as electrode materials for supercapacitors (SCs) due to their high-entropy effect. Currently, most research focuses on high-entropy materials made from a single substance, while studies on high-entropy composite materials are limited, presenting a promising area for future investigation. In this study, hollow sphere high-entropy sulfides (HESs) of (FeCoNiCuZn)S2 were prepared from metal nitrates and glycerol by solvothermal and sulfurization methods. Next, a layer of NiCoB (NCB) was constructed on the surface of HESs by chemical precipitation method, resulting in x-NCB@HES heterostructures with various NCB contents. When the NCB content was 0.1 (x = 0.1), the heterostructure exhibited the best electrochemical performance. The 0.1-NCB@HES composite demonstrated a specific capacitance of 1239.1 F·g−1 in a 3 M aqueous KOH solution, surpassing the capacitance of HES at 512.67 F·g−1 and that of NCB at 995.78 F·g−1. After 8000 cycles, the capacity of 0.1-NCB@HES remained at 78.11 % of the initial capacitance. Kinetic studies revealed that capacitance control governs energy storage in NCB@HES. When using 0.1-NCB@HES as the positive electrode and activated carbon (AC) as the negative electrode, the assembled 0.1-NCB@HES//AC asymmetric SC could provide a specific capacitance of 192.53 F·g−1, with an energy density of 60.16 Wh·kg−1 at a power density of 749.91 W·kg−1. This study provides an effective method to enhance the electrochemical performance of high-entropy transition metal sulfides.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"28 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible, Fast Decay and Stable X-ray Imaging Through the Pixelated CsCu2I3/PDMS Scintillation Array

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178916

Xiaotong Zhong, Jiale Guo, Jingkun Chen, Xin Shi, Wei Liu, Lin Li, Qianli Li, Jingtai Zhao

{"title":"Flexible, Fast Decay and Stable X-ray Imaging Through the Pixelated CsCu2I3/PDMS Scintillation Array","authors":"Xiaotong Zhong, Jiale Guo, Jingkun Chen, Xin Shi, Wei Liu, Lin Li, Qianli Li, Jingtai Zhao","doi":"10.1016/j.jallcom.2025.178916","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178916","url":null,"abstract":"Copper halides are widely used in X-ray imaging because of their green non-toxicity, excellent optical properties and simple preparation. Cs3Cu2I5 has a higher high photoluminescence quantum yield (PLQY) than CsCu2I3, but its fluorescence decay time is up to 1.65 μs. Herein, we report a green non-toxicity and low-cost antisolvent preparation of CsCu2I3 microcrystals with bright yellow emission. The fluorescence decay time of the product is as fast as 123 ns and the PLQY is 11.36%. At the same time, the light yield obtained by this method is 13454.3 photons/MeV, which is about twice that of the commercial scintillator single crystal Bi4Ge3O12 (BGO). In order to avoid transverse light scattering of scintillation films and improve the spatial resolution of X-ray imaging, we also propose a template-assisted and negative pressure filling method for the pixelated CsCu2I3 scintillation array based on Polydimethylsiloxane (PDMS) micropore template. The crosstalk of scintillation light between each column is effectively suppressed, and the spatial resolution of the pixelated CsCu2I3/PDMS scintillation array is improved. In conclusion, the CsCu2I3 microcrystals with fast decay, high optical properties and good stability, as well as the pixelated CsCu2I3/PDMS scintillation array that further improve spatial resolution by avoiding transverse scattering of light, provide a feasible solution for guiding copper halide materials as scintillators for X-ray detection and imaging.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Role of Nd Doping in Defect Compensation and Performance Enhancement of SnO2 Ultraviolet Photodetectors

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178910

Changlei Han, Rui Deng, Yongfeng Li, Dayong Jiang

引用次数: 0

Effects of temperature on stress response and deformation mechanism in tensile of wire arc additively manufactured 2319 alloy

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-01-29 DOI: 10.1016/j.jallcom.2025.178913

Jinsheng Ji, Feiyue Lyu, Yuchi Fang, Leilei Wang, Xiaohong Zhan

{"title":"Effects of temperature on stress response and deformation mechanism in tensile of wire arc additively manufactured 2319 alloy","authors":"Jinsheng Ji, Feiyue Lyu, Yuchi Fang, Leilei Wang, Xiaohong Zhan","doi":"10.1016/j.jallcom.2025.178913","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178913","url":null,"abstract":"Wire arc additive manufacturing technology has been widely applicated in the manufacturing of large-scale aerospace components. Hence, conducting research on the operating conditions of additively manufactured components in extreme environments is essential. Nonetheless, research on the high-temperature tensile behavior of as-deposited 2319 alloy is currently insufficient. This paper shifts from assessing the alloy's performance at high temperatures to investigating the mechanisms during hot deformation for potential application in processing methods. The results indicated that the increasing temperature weakened the work-hardening for the lower strength and higher elongation. Heat treatment contributed to the better performance in high-temperature tensile. Dynamic recovery was greatly activated with temperature increasing. At 200℃, insufficient heat input led to grain refinement in CDRX and DDRX, accompanied by the formation of abundant sub-grain boundaries. Besides, due to the left phases at grain boundaries, TDRX was activated in the deposited alloy. At 400℃, higher temperature dissolved phase, providing a thermal driving force and space for recrystallized grains growth to enhance elongation. The results of this study provide valuable insights for the high-temperature performance of wire arc additive manufacturing components.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"27 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0