Journal of Alloys and Compounds最新文献_第10页

Effect of niobium content on the precipitation behavior and mechanical properties of Ni-Cr alloys 铌含量对Ni-Cr合金析出行为和力学性能的影响

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184095

Guangchang Yang, Yanchang Qi, Zhaobo Li, Zhijie Zhang, Chengyong Ma

{"title":"Effect of niobium content on the precipitation behavior and mechanical properties of Ni-Cr alloys","authors":"Guangchang Yang, Yanchang Qi, Zhaobo Li, Zhijie Zhang, Chengyong Ma","doi":"10.1016/j.jallcom.2025.184095","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184095","url":null,"abstract":"The effect of niobium content on the precipitation behavior and mechanical properties of Ni-Cr alloys, both in as-deposited and heat-treated states, was investigated. Microscopic characterization results revealed that the microstructures of the Ni-Cr alloys consisted of γ dendrites arranged in parallel along the deposition direction. The primary precipitation phase identified was MC (M=Nb, Ti), located between the dendritic crystals. In alloys with a 2.13 wt.% Nb content, Cr23C6 is discretely distributed along the grain boundaries. When the Nb content increases to 3.00 wt.%, Laves phases emerge within the grains. Mechanical analysis results indicated that the austenite grains were refined in the as-deposited alloys and the area fraction of precipitates increased from 0.68% to 0.79% with the increase in Nb content, leading to enhanced strength and hardness of the alloys. Post heat treatment promoted the formation of MC (M = Nb, Ti) precipitates, resulting in a significant increase in the area fraction of these precipitates. This led to a slight decrease in impact energy value, but a marked increase in alloy strength. The heat-treated alloys with 3.00 wt.% Nb content exhibited the highest tensile strength of 675 MPa.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"101 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203328","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

Structural evolution and electrical properties of a new xNa0.5Bi2.5Nb2O9-(1-x)Bi3TiNbO9 solid solution for high-temperature piezoelectric ceramics 新型高温压电陶瓷xNa0.5Bi2.5Nb2O9-(1-x)Bi3TiNbO9固溶体的结构演变与电学性能

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184164

Zhipeng Zhang, Yaxian Li, Zong-Yang Shen, Qilai Wen, Haosong Wu, Zhumei Wang, Wenqin Luo

{"title":"Structural evolution and electrical properties of a new xNa0.5Bi2.5Nb2O9-(1-x)Bi3TiNbO9 solid solution for high-temperature piezoelectric ceramics","authors":"Zhipeng Zhang, Yaxian Li, Zong-Yang Shen, Qilai Wen, Haosong Wu, Zhumei Wang, Wenqin Luo","doi":"10.1016/j.jallcom.2025.184164","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184164","url":null,"abstract":"In this work, a new solid solution xNa0.5Bi2.5Nb2O9-(1-x)Bi3TiNbO9 (abbreviated as xNBN-(1-x)BTN, x=0-1) ceramics with bismuth layered structure were synthesized via solid state reaction method, and structural evolution and electrical properties were systematically investigated. The orthorhombic distortion of xNBN-(1-x)BTN ceramics decreases with the increase of NBN content. The Curie temperature TC gradually decreases from 885.7 oC of pure BTN to 764.5 oC of pure NBN with the increase of x value. For the composition of x=0.7, the remnant polarization is enhanced due to the decrease of orthogonal distortion, and the optimized electrical properties can be achieved as follows: enhanced piezoelectric coefficient d33=17.1 pC/N, high Curie temperature TC=777.4 oC, a large remnant polarization Pr=10.1 μC/cm2, increased DC resistivity ρ=1.68×107 Ω·cm and very low dielectric loss tanδ=2.4% at 500 oC. In addition, the 0.7NBN-0.3BTN ceramics also possesses excellent thermal stability, maintaining 88% of its initial d33 value even after depolarization at 750 oC, great potential for high-temperature piezoelectric sensor applications. This work provides an effective strategy for improving the properties of bismuth layer-structured ferroelectrics (BLSFs) by constructing solid solutions.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"95 6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203331","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

Controlled phase engineering of Fe doped NiCoLDH with 1D/2D hierarchical nanostructure for high energy density supercapacitors 高能量密度超级电容器用一维/二维分层纳米结构铁掺杂NiCoLDH的控制相位工程

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184153

Shakeel Ahmad, Muhammad Tariq, Henmei Ni, Hissah Saedoon Albaqawi, Afaq Ullah Khan, Sameerah I. Al-Saeedi, Kamran Tahir, Zainab M. Almarhoon, Magdi E.A. Zaki, Nacer Badi

{"title":"Controlled phase engineering of Fe doped NiCoLDH with 1D/2D hierarchical nanostructure for high energy density supercapacitors","authors":"Shakeel Ahmad, Muhammad Tariq, Henmei Ni, Hissah Saedoon Albaqawi, Afaq Ullah Khan, Sameerah I. Al-Saeedi, Kamran Tahir, Zainab M. Almarhoon, Magdi E.A. Zaki, Nacer Badi","doi":"10.1016/j.jallcom.2025.184153","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184153","url":null,"abstract":"Synergistic interactions among various components, along with deliberate structural optimization, can finely tune the electronic properties and accelerate reaction kinetics, leading to a marked improvement in electrode material performance. In this work, we report the synthesis of Fe-doped NiCo-layered double hydroxides (LDH) nanosheet heterojunctions featuring a well-engineered two/three-dimensional (2D/3D) hierarchical architecture designed to suppress aggregation and layer restacking, thereby facilitating efficient ion intercalation and extraction during electrochemical processes. The Fe0.05/NiCoLDH electrode exhibits an outstanding specific capacitance of 2861 F g⁻¹ at a current density of 1 A g⁻¹. The assembled hybrid supercapacitor (Fe0.05/NiCoLDH//activated carbon) delivers a high energy density of 83 Wh kg⁻¹ at a power density of 792 kW kg⁻¹, along with excellent cycling stability, maintaining 89% capacitance retention after 1000 charge–discharge cycles. This study demonstrates that Fe0.05/NiCoLDH devices, featuring a stable multi-component hierarchical architecture and enhanced electrical conductivity, offer a promising approach to improving the electrochemical performance of supercapacitors.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"17 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203329","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

Supercapacitor-based ionic diode: Mechanisms, materials, and emerging applications 基于超级电容器的离子二极管：机制、材料和新兴应用

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184152

Jisi Zhang, Yanfei Zeng, Zhenghu Sun, Zhichao Liu, Dongliang Yan, Qifan Liu

引用次数: 0

Microfracture mechanism of longitudinal torsional ultrasonic-assisted milling of 49Fe-49Co-2V alloy: experiment and MD simulation 超声纵扭铣削49Fe-49Co-2V合金微断裂机理：实验与MD模拟

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184147

Guofu Gao, Bingyang Zhang, Wenbin Ma, Ruikang Li, Haoxiang Wang, Daohui Xiang, Junjin Ma

{"title":"Microfracture mechanism of longitudinal torsional ultrasonic-assisted milling of 49Fe-49Co-2V alloy: experiment and MD simulation","authors":"Guofu Gao, Bingyang Zhang, Wenbin Ma, Ruikang Li, Haoxiang Wang, Daohui Xiang, Junjin Ma","doi":"10.1016/j.jallcom.2025.184147","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184147","url":null,"abstract":"The 49Fe-49Co-2V soft magnetic alloy faces challenges such as surface fragmentation and poor machining quality during conventional processing, significantly limiting its operational efficiency. Longitudinal torsional ultrasonic-assisted milling (LTUM) has emerged as a promising technique to address these challenges. This research integrates molecular dynamics (MD) simulation and LTUM experiments to systematically investigate the multiscale influence of ultrasonic vibration on the microfracture mechanism of the alloy. The results reveal that ultrasonic vibration suppresses brittle fracture by enhancing plastic deformation and activating dislocation motion, achieving an 84% reduction in the fracture surface length. The introduced ultrasonic energy promotes atomic plastic flow within the cutting zone, with surface atoms exhibiting a maximum displacement of 44 Å, thereby improving the material removal rate. High-frequency ultrasonic impacts facilitate dislocation annihilation, reducing average dislocation density by up to 25%. This mechanism alleviates dislocation pile-up and localized stress concentration, effectively delaying the nucleation and propagation of microcracks. These results provide novel insights into the micro-removal mechanism of the 49Fe-49Co-2V alloy, advancing its potential for high-precision industrial applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"102 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195213","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

Large electric polarization in multiferroic BaFe10.8Sc1.2O19 thin film 多铁性BaFe10.8Sc1.2O19薄膜的大电极化

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184160

Guanghao Fan, Songwei Wang, Xin Zhang, Zhuoqi Zhou, Jingtai Zhao, Huaiying Zhou, Guanghui Rao

{"title":"Large electric polarization in multiferroic BaFe10.8Sc1.2O19 thin film","authors":"Guanghao Fan, Songwei Wang, Xin Zhang, Zhuoqi Zhou, Jingtai Zhao, Huaiying Zhou, Guanghui Rao","doi":"10.1016/j.jallcom.2025.184160","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184160","url":null,"abstract":"High-quality (001)-oriented BaFe12O19(BFO) and BaFe10.8Sc1.2O19(BFSO) thin films were fabricated by pulse deposition techniques. Magnetic characterization revealed that the substitution of Sc3+ for Fe3+ changed transitions the room-temperature magnetic properties from hard to soft magnetism and alters the magnetic structure from linear ferrimagnetism to conical magnetism. Concomitantly, the strip-type magnetic domains become significantly finer and shorter. The refined domain structure facilitates inversion of magnetic moment reversal under reduced applied field and induces robust ferroelectric polarization. Dielectric properties measurements on the BFSO thin film demonstrated room-temperature ferroelectricity arising from the conical magnetic structure. By optimizing annealing processes, leakage current was substantially suppressed, enabling a well-defined ferroelectric hysteresis loop was achieved at 300 K with a remarkable remnant polarization (Pr) of ~2.6 μC/cm². This achievement establishes a foundation for magnetoelectric device applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"54 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203330","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

Enhanced hydrogen storage properties of MgH2 catalyzed by TiVCrFeNi high entropy alloy ticrfeni高熵合金催化增强MgH2的储氢性能

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184150

Dianchen Feng, Hao Li, Dechao Li, Liwen Zhang, ZeMing Yuan, Yanghuan Zhang

{"title":"Enhanced hydrogen storage properties of MgH2 catalyzed by TiVCrFeNi high entropy alloy","authors":"Dianchen Feng, Hao Li, Dechao Li, Liwen Zhang, ZeMing Yuan, Yanghuan Zhang","doi":"10.1016/j.jallcom.2025.184150","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184150","url":null,"abstract":"MgH2 has a high theoretical hydrogen storage capacity (7.6 wt.%) and cost advantages, but its high hydrogen absorption and desorption temperatures, as well as its slow kinetic performance, seriously restrict its practical application. In this study, a TiVCrFeNi high entropy alloy (HEA) catalyst was prepared using a powder metallurgy process, and a high-energy ball milling process successfully synthesized MgH2-x wt.% TiVCrFeNi (x = 3, 5, 7, 10) composites. The catalytic mechanism of TiVCrFeNi HEA with FCC phase structure on the hydrogen storage performance of MgH2 was studied. The synergistic effect of multivalent transition metal elements in HEA produces a 'cocktail' effect, which effectively optimizes the hydrogen absorption and desorption reaction path of MgH2. Among them, the MgH2-5 wt.% TiVCrFeNi composite exhibits the best comprehensive hydrogen storage performance. Compared to ball-milled MgH2, the dehydrogenation activation energy of the composite is significantly reduced to 71.49 kJ/mol H2 (a decrease of 42.4%), and the initial hydrogen desorption temperature is reduced to 455 K (an 80 K reduction). This study provides an effective strategy for utilizing high-entropy alloys to catalytically enhance the hydrogen storage properties MgH2.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"4 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203332","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

Enhanced electrochemical performance of NaTi₂(PO₄)₃ as an electrode in KOH solution for supercapacitor applications nati2 （PO₄）₃电极在KOH溶液中电化学性能的提高

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184154

Vivek Yadav, Archana Mishra, Anand Kumar Maurya, Ram Sevak Singh, Sachindranath Das, Anar Singh

{"title":"Enhanced electrochemical performance of NaTi₂(PO₄)₃ as an electrode in KOH solution for supercapacitor applications","authors":"Vivek Yadav, Archana Mishra, Anand Kumar Maurya, Ram Sevak Singh, Sachindranath Das, Anar Singh","doi":"10.1016/j.jallcom.2025.184154","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184154","url":null,"abstract":"We present the influence of electrolyte solutions on the electrochemical performance of NaTi2(PO4)3, as an electrode material for supercapacitor applications. The NaTi2(PO4)3 ceramic material was successfully synthesised in the rhombohedral phase with R<math><mover accent=\"true\" is=\"true\"><mrow is=\"true\"><mn is=\"true\">3</mn></mrow><mo is=\"true\">̅</mo></mover></math>c space group, as confirmed by the Rietveld refinement of the x-ray diffraction data. Electrochemical impedance spectroscopy studies revealed that charge transfer resistance in KOH electrolyte is significantly lower than in NaOH, indicating higher ionic conduction in KOH. The specific discharge capacities of the NaTi2(PO4)3 electrode material in KOH and NaOH solutions were found to be 75.46 mAh/g and 6.3 mAh/g, respectively. Moreover, the energy density reached 54.16 Wh/kg at a power density of 1612 W/kg in KOH electrolyte, which is significantly higher than the 3.73 Wh/kg at 1532 W/kg observed in NaOH electrolyte. The electrode also exhibited excellent cycling behaviour, with less than 2% capacitance loss after 10,000 cycles in KOH electrolyte, compared to 15% in NaOH electrolyte. Further, the mechanisms of electrochemical behaviour and associated chemical reactions in KOH and NaOH electrolytes were investigated using density functional theory (DFT) calculations. These findings highlight NaTi2(PO4)3 as a promising electrode material for KOH electrolyte-based supercapacitors.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"22 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203692","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

Recycling-Inspired Design and Development of an Ultrafine-Grained Phase-Separated High Entropy Alloy 超细晶相分离高熵合金的循环设计与研制

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184155

R. Yara, M.K. Singh, N.K. Chaitanya, M. Gor, U. Sunkari, Y. Miyajima, P.P. Bhattacharjee

{"title":"Recycling-Inspired Design and Development of an Ultrafine-Grained Phase-Separated High Entropy Alloy","authors":"R. Yara, M.K. Singh, N.K. Chaitanya, M. Gor, U. Sunkari, Y. Miyajima, P.P. Bhattacharjee","doi":"10.1016/j.jallcom.2025.184155","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184155","url":null,"abstract":"Recycling-inspired design and development of a novel phase-separated high entropy alloy (PS-HEA) Co20Cr26Fe20Mn20Ni14)0.75Cu0.25 was carried out in this work. The HEA consisted of Cu-rich FCC1 and Cu-lean FCC2 phases and showed a core-shell morphology in the Cu-lean FCC2 phase due to the precipitation of the Cr-rich tetragonal σ-phase. Heavy cold-rolling resulted in the progressive formation of a banded or elongated morphology, deformation-driven fragmentation and dissolution of the σ-phase, and Cr-supersaturation near the σ-phase. Recrystallization was confined to the individual Cu-rich FCC1 and Cu-lean FCC2 bands, which resulted in considerable mutual hindrance to grain growth and the retention of a remarkable ultrafine microstructure compared to other HEAs. Meanwhile, annealing resulted in the formation of σ-phase nanoprecipitates within the Cu-lean FCC2 phase. Solid solution, Hall-Petch strengthening due to ultrafine microstructure, and Orowan-Ashby strengthening due to the nanoprecipitates resulted in a remarkable improvement in yield strength to ~850 MPa with an elongation of ~5-6%. The results highlighted the potential of PS-HEAs as a novel class of HEAs with tunable microstructure and properties for structural applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"75 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195210","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

Constructing a high-loading cathode via the synergistic effect of carbon nanotubes and ammonium vanadate for high-rate and long-cycle aqueous zinc-ion batteries 利用碳纳米管和钒酸铵的协同效应构建高负载高倍率长循环锌离子电池阴极

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-10-01 DOI: 10.1016/j.jallcom.2025.184149

Mingdong Liu, Xiaohe Ren, Ziwei Gan, Mengxuan Sun, Zhijie Li

{"title":"Constructing a high-loading cathode via the synergistic effect of carbon nanotubes and ammonium vanadate for high-rate and long-cycle aqueous zinc-ion batteries","authors":"Mingdong Liu, Xiaohe Ren, Ziwei Gan, Mengxuan Sun, Zhijie Li","doi":"10.1016/j.jallcom.2025.184149","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184149","url":null,"abstract":"Overcoming the sluggish Zn2+ transport kinetics and engineering high-mass-loading of active material on cathodes are urgent for practical high-performance aqueous zinc ion batteries (AZIBs). Because of their high theoretical capacity, diverse crystal structures and multivalent states, vanadium-based materials are extensively studied for the cathodes of AZIBs. Nevertheless, poor inherent conductivity and structure susceptible to collapse lead to limited cycling stability and low-rate performance. Therefore, in this study, the composite of ammonium vanadate and carbon nanotubes (NH4V4O10/(NH4)2V4O9/CNTs (NVOH_10 %CNT)) is synthesized by a simple hydrothermal method. The CNTs can form conductive networks to the increase conductivity for fast electron transport. At the same time, CNTs can also mitigate the structural collapse of NVOH. Therefore, the NVOH_10 %CNT//Zn cell displays a high specific capacity of 446.2 mAh g−1 at 0.3 A g−1 and 286.1 mAh g−1 even at a high operating current density of 20 A g−1. In addition, the capacity retention is 88.52 % after 5000 cycles at 20 A g−1. Even after 10000 cycles, the specific capacity remains 211.6 mAh g−1. Furthermore, a button cell with a high mass loading of 9.3 mg cm−2 exhibits a specific capacity of 425.7 mAh g−1 at 0.5 A g−1. In addition, the NVOH_10 %CNT//Zn pouch battery exhibits high area capacity (8.56 mAh cm−2). This work demonstrates a new and effective approach to design ammonium vanadate composite materials for cathodes of AZIBs.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"19 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203326","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