JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yandong Che,Qianpeng He,Aoyun Yuan,Jie Zhou,Jiacheng Ding,Tõnu Pullerits,Qian Zhang,Yanqiu Yang,Wenjie Li,Peng Song
Integrating pollutant detection and degradation into a single material platform is highly desirable for the efficient treatment of dye-contaminated wastewater. However, simultaneously achieving sensitive detection and efficient photocatalytic activity remains challenging because these functions involve distinct interfacial processes. In this work, an Ag NPs@Cu-V 2 O 5 hybrid was prepared through wet-chemical synthesis and calcination of Cu-V 2 O 5 , followed by ultrasonic coupling with preformed Ag nanoparticles. Cu incorporation modulated the local electronic environment of V 2 O 5 , while the supported Ag nanoparticles provided plasmonic SERS-active sites. XPS binding-energy shifts were consistent with interfacial electronic redistribution, FDTD simulations revealed pronounced local-field amplification around the Ag nanoparticles, and energy-level analysis indicated accessible interfacial charge-transfer pathways under 532 nm excitation. Using colorless, non-resonant 4-MBA as a control probe, the hybrid produced a higher Raman response than the Ag NP reference under equivalent Ag loading, indicating that the enhancement was not solely dependent on the molecular pre-resonance behavior of MB. The hybrid enabled MB detection down to 1 × 10⁻⁹ mol L⁻¹ , with good spatial uniformity and approximately 80% signal retention after 28 days. After correction for dark adsorption, it achieved an MB degradation efficiency of 82.3% after 60 min of visible-light irradiation and exhibited higher photocatalytic activity than pristine V 2 O 5 and Cu-V 2 O 5 . These results demonstrate a plasmonic–semiconductor platform that integrates SERS sensing and photocatalytic remediation through Ag-induced local-field amplification, Cu-related electronic modulation, and Ag/Cu-V 2 O 5 interfacial interactions.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Qianxi Wang,Yuqi Wang,Jijun Tang,Yuqing Li,Jianjing Zhu,Xue Zhao,Rong Xie,Xiaoyan Wang,Yuqiao Chai,Jiaoxia Zhang
Aqueous zinc-ion batteries (AZIBs) display great promise for large-scale energy storage due to their high safety and low cost, but they are still hampered by limited capacity and insufficient cycling stability due to the cathodic expansion, anodic hydrogen evolution and corrosion, and the inherently low ionic conductivity. This work designed a V 2 O 5 nanofiber/MBene heterojunction to suppress expansion of cathode. The V 2 O 5 nanofibers provide multidimensional ion transport channels and abundant electrochemically active sites, while the introduction of MBene helps establish a more efficient electron-transport network and lowers the interfacial charge-transfer resistance. This unique heterojunction enhances the structural stability and enables highly efficient reversible redox reactions through a synergistic effect. The optimized VM-73 delivered a reversible specific capacity of 210 mAh g −1 at 1 A g −1 , with 92% capacity retention after 1000 cycles and 62.9% capacity retention even after 30,000 cycles. The electrode exhibits pronounced surface-controlled kinetics at high scan rates, with the surface-controlled contribution reaching 89%, together with a Zn 2+ diffusion coefficient ranging from 10 −8 to 10 −10 cm 2 s −1 , demonstrating rapid charge transfer and interfacial reaction kinetics. DFT calculations suggest that interfacial electronic coupling in the heterojunction is favorable for Zn 2+ storage and interfacial charge transport, leading to superior amplification performance and cycling stability. The synergistic effect of V 2 O 5 and MBene effectively promotes multi-step reversible reactions and suppresses side reactions, significantly improving the long-term electrochemical stability of the electrode.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2026
·
IF 9.9
Zhen Zhu,Jiayi Xu,Kongjun Zhu,Jing Wang,Kang Yan,Jingsong Liu
In integrated zinc-ion structural batteries, the design and fabrication of carbon fiber (CF) composite electrodes present considerable work, particularly because CFs exhibit inferior conductivity compared with traditional metal foils, which hinders their use as current collectors. This work employs silver-plated CFs as current collectors for both electrodes in zinc-ion flexible batteries for the first time and achieves electrodes with robust mechanical strength and substantial energy storage performance. For the cathode, commercial V 2 O 5 is coated onto silver-plated CFs, which effectively leverages the electrochemical benefits of vanadium oxides to deliver a high specific capacity of 320 mAh g −1 and 87% capacity retention after 1500 cycles at 2 A g −1 . On the anode, zinc is electrodeposited onto the CFs, where the silver layer improves deposition efficiency and yields a homogeneous coating. This work demonstrates an optimization strategy for CF composite electrodes, which holds potential value for structural energy storage and flexible electronic device applications.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Xuemei Qiu,Xu Yang,Que. Zhou,Nianben Zheng,Zhiqiang Sun
Preparing the V 3.5+ electrolytes by catalytic reduction of V 2 O 5 with formic acid is a straightforward and efficient process for vanadium flow batteries (VFBs). Nevertheless, converting vanadium ions in a strong acid environment depends on utilizing highly active and stable catalysts. Herein, a novel Pt-based catalyst supported by graphene oxide (GO) and hexadecyl trimethyl ammonium bromide (CTAB) (Pt/GO@CTAB) was developed for the catalytic reduction method. The introduction of CTAB into the catalyst enhanced the dispersion of GO, increased the degree of defects, and created more reduction sites for Pt, thereby improving the catalytic activity for formic acid oxidation. As a result, the reduction rate increased by 42.86 % compared to the Pt/C catalyst. Moreover, an economic analysis of the catalyst revealed that Pt/GO@CTAB could reduce costs by 49.25 %. Finally, charge-discharge experiments were conducted on the VFB single-cell with the prepared V 3.5+ electrolyte, which exhibited comparable Coulombic efficiency (CE) and energy efficiency (EE) to the other electrolytes, with CE and EE values of approximately 97 % and 87 %, respectively. These results suggest that Pt/GO@CTAB is a promising catalyst that not only reduces costs but also maintains electrolyte performance, offering a viable alternative to the traditional Pt/C catalyst for the efficient preparation of vanadium electrolytes.
研究领域:
储能
·
电化学
·
催化
·
纳米材料
·
电池技术
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 21
·1-13
·
IF 2.8
Sun Li,Wang Shuimiao,Bai Yuehao,Li Guang,Tao Yong,Wang Wei,Yang ChangAn
Lithium–sulfur (Li–S) batteries have garnered significant research interest owing to their exceptional theoretical energy density, coupled with the cost-effectiveness and environmental sustainability inherent in sulfur-based cathode materials. Nevertheless, the practical implementation of these systems remains impeded by challenges, such as the shuttle effect of soluble lithium polysulfide intermediates during cycling, which contributes to rapid capacity degradation and suboptimal electrochemical performance in current Li–S configurations. Herein, a sulfur-containing composite, S@V 2 O 5 /KB, was synthesized using a straightforward high-temperature melt synthesis method. The V 2 O 5 /KB composite was obtained by mixing vanadium pentoxide (V 2 O 5 ) and Ketjen black (KB) through a simple ultrasonic process, followed by high-temperature melting to yield the sulfur-containing composite, S@V 2 O 5 /KB. Constant current discharge tests demonstrated that the addition of KB as a conductive agent significantly improved the performance of the battery. The optimal performance was achieved when the mass ratio of V 2 O 5 to KB was 2:1. After 100 cycles at a rate of 0.5C, the capacity of 678.3 mA h g −1 was retained, resulting in a capacity retention rate of 71.67%.
研究领域:
材料科学
·
电化学
·
储能技术
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Wenzhe Su,Zanyu Chen,Xingkai Wang,Peng Cui,Minjie Yao,Hui Sun,Hong Zhang,Yida Deng,Xiaopeng Han,Wenbin Hu
Due to high safety and low-cost, aqueous Zn-ion batteries (ZIBs) are expected to be a promising next-generation energy storage technology. Exploiting high capacity and stable cathode materials are extremely important for the development of aqueous ZIBs. However, commercial V 2 O 5 despite its high theoretical specific capacity, suffers from structural instability during charging and discharging, and strong electrostatic forces seriously limit the diffusion of Zn 2+ . Herein, a novel dynamic transport mechanism of Zn 2+ is designed by intercalating organic cations (C 8 H 15 N 2 + ) from ionic liquids into the interlayers of V 2 O 5 . The electrostatic interaction between the C 8 H 15 N 2 + and the V-O layers enhance the structure stability of the layers and increase the interlayer spacing. Meanwhile, the C 8 H 15 N 2 + between the V-O layers reduce the diffusion energy barrier of Zn 2+ and enable the rapid dynamically transport of Zn 2+ . The diffusion coefficient is enhanced by an order of magnitude. The optimized V 2 O 5 cathode exhibits a high capacity of 268 mA h/g at 100 mA/g and excellent cycling stability (over 500 cycles at 200 mA/g with nearly 100 % coulombic efficiency). The home-made pouch cells deliver a high energy density of 310 W h kg −1 . This interesting idea opens up a new research direction for high-energy secondary batteries.
研究领域:
材料科学
·
电化学
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高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Jiayi Xu,Kongjun Zhu,Zhen Zhu,Penghua Liang,Zheng Zhang,Hongjuan Zheng,Jingsong Liu,Kang Yan,Jing Wang
Structural energy storage technology is a potential solution to reduce the weight of electrical energy storage systems. Zn ion fiber batteries are important for this technology given their flexibility, safety, and lightweight. As a component of fiber battery production, the structural design of fiber electrodes is caught in a dilemma. Fiber electrodes with core are difficult to prepare continuously, while fiber electrodes without core have unsatisfactory mechanical strength . Herein, a wet spinning method is used to prepare fiber electrodes with core continuously at a speed of 25 mm s −1 . Raw commercial vanadium pentoxide powders, acetylene black, and polyvinylidene fluoride are mixed into a slurry. A special tapered concave nozzle is designed to make the slurry saturate the core fully and be extruded well. Therefore, the fiber electrodes own a high ultimate tensile strength of 303 MPa and maintain the microstructure after 5000 bending cycles. The Zn ion fiber batteries exhibit a specific capacity of 134 mAh g −1 at 0.1 A g −1 after 100 cycles. This work shows a simple and efficient way to prepare fiber electrodes with core, which provides a new strategy for flexible electronic manufacturing and structural energy storage technology.
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高影响因子
Advanced Sustainable Systems
·
2023
·Vol. 7
·期 5
·2200473
·
IF 7.1
Jing Tang,Qingdong Ruan,Hongmin Yu,Chao Huang
Electrocatalytic water splitting generated oxygen (O 2 ) and hydrogen (H 2 ) is a promising way to solve the energy crisis. Oxygen evolution reaction (OER) compared to hydrogen evolution reaction (HER) has slow kinetics hindering overall process. Recently, cobalt hydroxide (Co(OH) 2 ) with high activity and stability for OER has attracted more attention. During the OER process, the Co 2+ in Co(OH) 2 is further oxidized to Co 3+ and CoOOH species are true active sites. However, the low conductivity of Co(OH) 2 hinders its oxidization to CoOOH. In addition, spontaneous growth of Co(OH) 2 agglomerates easily during hydrothermal treatment, leading to decreased active sites. Herein, an efficient strategy is developed to construct highly dispersive Co(OH) 2 nanosheets vertically grown on V 2 O 5 nanoflowers (Co(OH) 2 /V 2 O 5 ) at room temperature. The V 5+ of V 2 O 5 can oxidize Co 2+ of Co(OH) 2 into Co 3+ , resulting in in situ formations of CoOOH species favorable to the OER process. In situ Raman also investigates that the OH - species are inserted more easily into the interlayer of Co(OH) 2 of (Co(OH) 2 /V 2 O 5 ) than that of pure Co(OH) 2 . Therefore, the hybrid Co(OH) 2 /V 2 O 5 exhibits low overpotentials of 320 and 370 mV at a current density of 10 and 50 mV cm -2 , respectively, and a small Tafel slope of 68 mV dec -1 .
研究领域:
电化学
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材料科学
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能量转换
·
纳米材料
·
催化
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高影响因子
CERAMICS INTERNATIONAL
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2026
·
IF 6
Xiaolei Shi,Fuyu Li
Currently, microwave communication devices are rapidly evolving toward miniaturization, high stability, and cost-effectiveness. However, traditional microwave dielectric ceramics with moderate dielectric constants require excessively high sintering temperatures and exhibit poor microwave dielectric properties. Here, 2 wt % V 2 O 5 -modified Ba 3 Ti 4 Nb 4 O 21 (BTN) ceramic is prepared via solid-state reaction method. The sintering temperature of the BTN ceramic is successfully reduced from 1270°C to 975°C. This ceramic exhibits excellent microwave dielectric properties ( ε r = 47 (@5.78GHz), Q × f = 15,841 GHz (@5.78GHz), τ f = + 14.3 ppm/°C). Using XRD, SEM, EDS, Raman spectroscopy, and first-principles calculations, the changes in the microwave dielectric properties of BTN ceramics and their effects are elucidated. Based on this ceramic, a slot-coupled side-fed cylindrical dielectric resonant antenna was designed and investigated by full-wave electromagnetic simulation. The simulated antenna achieves excellent impedance matching and polarization isolation while maintaining a compact size: simulated center frequency is 6.74 GHz, BW = 200 MHz, and S 11 = -36.26 dB. This work demonstrates that BTN + 2 wt % V 2 O 5 microwave dielectric ceramics hold great potential for development in the field of 5G microwave communications.
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高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Hui Yang,Guobao Xu,Xiaolin Wei,Juexian Cao,Liwen Yang,Paul K. Chu
Monolithic interwoven composite of V 2 O 5 nanobelts and carbon nanotubes (designated as VNTs⊂CNTs-40) is prepared via one-pot hydrothermal synthesis and subsequent vacuum filtration. The strong synergistic effect between versatile CNTs and in situ produced V 2 O 5 nanobelts in hydrothermal process leads to the formation of 3D interwoven mesh intermediate with relatively loose and well-reticulated channels which facilitate mass transfer in ultrafast hetero-assembly (∼30s) of film-like monolithic VNTs⊂CNTs-40 composite during vacuum filtration. The interconnected CNTs network and interstitial porous channels in the monolithic VNTs⊂CNTs-40 composite not only improve charge transport during the redox reactions of the active materials, but also serve as a robust and flexible buffer to accommodate the volume change during repetitive ion insertion/extraction. In the evaluation of binder-free cathodes in alkali-ion batteries, the monolithic VNTs⊂CNTs-40 composite exhibits outstanding alkali-ion storage properties such as high initial capacity (215.2/295.8 mAhg −1 for SIBs/LIBs at a current density of 200 mAg −1 ), high-rate capability (137.8/156.2 mAhg −1 for SIBs/LIBs at a current density of 800/2000 mAg −1 ), and superior cycling stability (167/223.5 mAhg −1 for SIBs/LIBs at a current density of 200 mAg −1 after 200 cycles). The monolithic VNTs⊂CNTs-40 composite has large potential in high-performance alkali-ion batteries.
研究领域:
材料科学
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电化学
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纳米材料
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能源存储
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电池技术
·
复合材料工程
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2020
·
IF 3.408
Jiawei Wei,Bingqiang Han,Xuancheng Wang,Junfeng Chen,Yaowu Wei,Wen Yan,Nan Li
In this paper, CaO granules were prepared, using the slaked lime as the raw material as well as ZrO 2 , TiO 2 , and V 2 O 5 as additives, respectively. The influence of different additives on the sintering properties, microstructure and hydration resistance of CaO granules was investigated. The results indicated that the introduction of additives could obviously promote the densification and the hydration resistance of the specimens. Especially, the sintering mechanisms of the specimens with different additives were studied. For the specimens with ZrO 2 and TiO 2 as additives, the in-situ formed CaZrO 3 and Ca 3 Ti 2 O 7 between grain boundaries promoted the densification to enhance the properties of the granules. However, the adding of V 2 O 5 generated a coating on the surfaces of CaO granules which contributed to the best hydration resistance.
研究领域:
材料科学
·
无机化学
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高影响因子
RSC Advances
·
2021
·Vol. 11
·期 25
·15106-15117
·
IF 3.361
Ya-Ni Zang,Shan-Shan Yang,Jie Ding,Shuang-Yang Zhao,Cheng-Xin Chen,Lei He,Nan-Qi Ren
A ternary biochar/vanadium pentoxide/graphite like carbon nitride (BC/V2O5/g-C3N4 denoted BC/VO/CN) composite was prepared by a simple hydrothermal method and its photocatalytic performance was investigated under simulated solar irradiation. The BC/VO/CN was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy. Within the BC/VO/CN composites VO nanoparticles were highly crystalline and intertwined with the lamellas of CN, resulting in the formation of well-defined Z-type heterostructures. The photocatalytic activity was evaluated using Rhodamine B as a model pollutant. Under simulated solar (230–780 nm) irradiation the as-prepared BC/VO/CN hybrid materials demonstrated highly improved photocatalytic activity compared to CN, VO and VO/CN. The cause of the solar enhancement could be ascribed to the formation of Z-type heterojunctions between VO and CN, which promoted faster electron–hole separation and more efficient charge transfer. BC, as an electron transfer medium, accelerated the transfer of photogenerated charge carriers and inhibited their recombination.
研究领域:
环境科学
·
材料科学
·
光催化
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PubMed
高影响因子
危险品化学品经营许可证（带存储）