ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Yuan Wang,Liying Wang,Mengjiao Zhang,Yufang Sun,Qian Liu,Dingding Guo,Yuxin Zhang,Ting Wu,Zheng Hu,Wenjie Feng,Zhenzhu Cao,Yongfeng Zhang
V2O5/MnV2O6 heterostructure suppresses Jahn-Teller distortion via V-O-Mn interface. • In-situ EIS and DRT analysis reveal the dynamic evolution of charge transfer. • Peak of 234.8 mAh g-1, with 94.8% initial retention over 12 000 cycles at 20 A g-1. Aqueous zinc-ion batteries (AZIBs) are increasingly recognized as frontrunners for next-generation energy storage owing to their high safety and cost advantages. Despite these merits, the large-scale implementation of AZIBs is severely constrained by persistent cathode-related problems, including the Jahn-Teller distortion in manganese-based oxides and the vanadium dissolution as well as poor electrical conductivity in vanadium-based oxides. Herein, we report a novel heterostructure (V 2 O 5 -TRZ/MnV 2 O 6 ) constructed from a vanadium-based layered nanosheet precursor by precisely tuning the manganese doping amount and the calcination temperature. The optimized sample (VMn 1 -350) exhibits a unique flower-like morphology assembled from nanowires, with the heterointerfaces to form a stepped energy band gradient. Mn 3+ and V 4+ are both Jahn–Teller active. Upon Mn doping, electron transfer from V 4+ to Mn 3+ generates V 5+ and Mn 2+ , and their synergistic interplay mutually suppresses excessive Jahn-Teller distortion, thereby stabilizing the structure and enabling ultra-long cycling stability. The heterojunction interface establishes an internal electric field that lowers the charge-transfer barrier and enhances charge transport, thereby greatly mitigating polarization during high-rate Zn 2+ (de)intercalation. Triggered by self-activation at 20 A g –1 , the VMn 1 -350 cathode climbs from an initial 170.3 to a peak of 234.8 mAh g –1 , maintaining 161.5 mAh g –1 after 12 000 cycles-a high 94.8% retention relative to the first stable cycle. Combined with ex situ XRD, XPS, in situ EIS, and electrochemical kinetic analyses, the zinc storage mechanism and structural evolution during the charge-discharge process are systematically elucidated. This work demonstrates that the effective inhibition of Jahn-Teller distortion through near-pure Mn 2+ doping, in synergy with the heterostructure and oxygen-vacancy-mediated charge compensation, is crucial for achieving exceptional structural stability and ultra-stable cycling performance in V-based cathode materials designed for aqueous zinc-ion batteries. Download: Download high-res image (325KB) Download: Download full-size image
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Huang Zilin,Su Zhicheng,Zafar Zainab,Zhu Li,Chen Qinqi,Long Kailin,Zou Jijun,Guo Xitao
Respiratory patterns (including breathing rate and depth) are critical vital signs for many disorders, such as asthma, sleep apnea, and chronic obstructive pulmonary disease. Breath sensors are capable of identifying abnormalities in respiratory patterns, which can evaluate the basic human body conditions during sports, surgery, and sleep and play a significant role in the healthcare system. However, present breath sensors have limitations for timely response and are incompatible with practical usage in daily activities. Here, we report an ultrafast-response flexible thermal sensor based on vanadium pentoxide nanorods (V 2 O 5 NRs) network for human respiration monitoring. A polyimide (PI) substrate comprises the fundamental component of the sensor, followed by a V 2 O 5 NRs sensing layer and a medical-grade encapsulating tape. A two-step method which involves hydrothermal synthesis and thermal oxidation is used to synthesize the V 2 O 5 NRs, Raman spectroscopy, XRD, and XPS are used to verify their structural quality. Such fabricated sensor has demonstrated the ability to accurately detect temperature in the range of 25–42 °C and excellent sensitivity (-1.55% °C −1 ) and linearity ( R 2 = 0.985) with a detection accuracy of 0.5 °C, enabling it to successfully sense changes in temperature of the exhaled/inhaled breath. Consequently, the sensor exhibits the enhanced breath sensing performance with a response time of 0.56 s and a recovery time of 0.97 s. Cyclic testing results reveal that the sensor exhibits exceptional consistency and repeatability in sensing human breath at various breathing rates, indicating its potential for long-term, ambulatory respiration monitoring. Furthermore, the sensor can be applied for prewarning of sleep apnea when integrated with an apnea alarm module developed with a microcontroller unit circuitry.
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产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Jiwei Xie,Zhenggang Jia,Mingfang Qian,Congyan Bai,Limei Wang,Yihan Qiu,Xuexi Zhang
The evolution of cathode materials is crucial for the large-scale manufacturing of aqueous zinc-ion batteries. Vanadium-based materials possess large interlayer distances and thus allow for easy intercalation/deintercalation processes of zinc ions . However, commercially available V 2 O 5 is seldom used directly as cathode materials for aqueous zinc ion batteries because of low activity and more side reactions. Here, we have outlined a methodology to to enhance its reactivity and prevent the side reaction effectively. The pre-treated V 2 O 5 (V 2 O 5 -P) was carried out through a combination of water bath treatment at a temperature of 65℃ and freeze-drying, which showed expanded layer spacing and increased density of active sites. The structural variations of V 2 O 5 during pretreatment were analyzed using various test methods, and the structural evolution in cathode material and energy storage mechanism during charge/discharge was also investigated by in-situ Electrochemical Impedance Spectroscopy . The V 2 O 5 -P material showed almost no capacity degradation during 200 charge/discharge cycles (0.5 A g −1 ) with a Coulombic efficiency consistently exceeding 99.98 %. After 5000 cycles (2 A g −1 ), V 2 O 5 -P maintained 70 % specific capacity with a Coulombic efficiency of more than 99.5 %. As a result, this work presented an easy-to-use method for commercialized materials applied to energy storage on a larger scale.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Changyi Zheng,Wenjian Wang,Feng Liu,Zidong Zhang,Yue Zhang,Fei Han,Rui Zhao,Yao Liu,Linjuan Zhang,Weidong Xue
Vanadium pentoxide (V 2 O 5 ) has emerged as a compelling cathode candidate for aqueous zinc-ion batteries (AZIBs) owing to its high theoretical capacity (589 mAh g −1 ). Nevertheless, practical implementation faces critical challenges: (1) intrinsic electronic insulating properties, (2) irreversible structural collapse during Zn 2+ intercalation, and (3) vanadium dissolution in aqueous media, collectively resulting in rapid capacity degradation. While existing modification approaches (e.g., pre-intercalation, nano structuring) partially address these issues, their multi-step processing and high energy consumption hinder scalability. Herein, we propose a novel hybrid electrolyte strategy (ZnSO 4 + Na 2 SO 4 ) that enables spontaneous electrochemical reconstruction of commercial V 2 O 5 during initial cycles (∼200 cycles). The dual-anion synergy precisely controls phase evolution, inducing in situ formation of a Zn 3 V 2 O 7 (OH) 2 ·2H 2 O/Na 2 V 6 O 16 ·3H 2 O dual-phase heterostructure. The optimized cathode delivers exceptional cyclability with 206 mAh g −1 residual capacity after 1500 cycles at 1 A g −1 (ultrahigh 78 % retention), outperforming most reported V-based AZIB cathodes. This simple yet effective electrolyte engineering strategy demonstrates high material utilization from raw V 2 O 5 , establishing a paradigm for sustainable battery manufacturing through electrochemically-driven structural optimization.
研究领域:
电化学
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储能
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材料科学
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电池技术
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DOI
高影响因子
Journal of Materiomics
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2019
·
IF 0
En-Lai Zhao,Shi-Xi Zhao,Xia Wu,Jing-Wei Li,Lü-Qiang Yu,Ce-Wen Nan,Guozhong Cao
A series of 20Li 2 O-30V 2 O 5 -(50- x) SiO 2 - x B 2 O 3 (mol.%) ( x = 10, 20, 30, 40) glasses were prepared by the traditional melt-quenching synthesis. The amorphous nature of the glasses was determined by XRD, DSC and TEM investigations. FTIR measurement revealed the functional group of obtained glasses. And EDS results confirmed the presence and uniform distribution of elements in the glasses. 20Li 2 O-30V 2 O 5 -40SiO 2 -10B 2 O 3 (LVSB10) sample with the highest V 4+ ratio exhibited the best cycling capacity. In order to further improve cycling stability of LVSB10 sample, ball milling was employed to reduce the particle size. The ball milled LVSB10 sample (LVSB10-b) showed an improved first discharge capacity, cycling stability and rate capacity. EIS measurements showed that ball milling can effectively decrease charge transfer impedance and facilitate Li + ion diffusion. This work provides a new way to explore a new type of cathode materials for lithium ion batteries.
研究领域:
材料科学
·
电化学
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DOI
ACS Applied Nano Materials
·
2019
·
IF 0
Chunlei Zhang,Ping Wu,Guojuan Liu,Zhigao Zhu,Gaofeng Zeng
Direct oxidation of methanol to high value oxygenated chemicals on V2O5/TiO2 based catalysts is a green alternative to the commercial methods. But the V–Ti based catalysts are challenged by the relatively low reactivity. Herein, we demonstrated a facile and practicable strategy to directly fabricate hollow structure VOx/TiO2 nanofibers (VTO-HNF) through the coelectrospinning and calcination method. The effects of V/Ti ratio on the structure, the surface chemistry and methanol oxidation performance were investigated in detail. VTO-HNFs with appropriate V/Ti ratio have hierarchical structure, large surface area, uniform nanoparticles, narrowed grain sizes, and high dispersions of vanadium. Moreover, both the oxidation properties and the acidities of the catalyst were enhanced due to the high content of surface V4+. The VTO-HNF catalysts featured excellent activities and reliable stability for the selective oxidation of methanol to methyl formate (MF) and dimethoxymethane (DMM). The MF yield reached 90% at 150 °C, which is comparable with the noble metal based catalysts. In situ NAP-XPS investigations suggested that the variable valence of vanadium was involved in the oxidation of methanol.
研究领域:
材料科学
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催化
·
化学工程
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DOI
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Tongyu Liu,Zijie Xu,Linlin Chen,Yali Zhang,Ming Wang,Yun Jia,Yaoguo Huang
Improving the stability of the layered structure and suppressing vanadium dissolution during repeated Zn 2+ insertion/extraction processes are considered to be the key to promote the electrochemical stability of vanadium-based cathodes for ZIBs. In this work, a group of sandwich-like V 2 O 5 /graphene composites (V 2 O 5 /xG) were controllably fabricated by tuning the amount of hydrophobic graphene. With the increase of graphene content, the corresponding electrochemical properties show a parabolic trend that increase first and then decrease. A maximum capacity of 270 mAh g −1 after 100 cycles at 0.1 A g −1 and a superior cycle stability with 82.4% capacitance retention after 6000 cycles at 10 A g −1 are achieved when the amount of graphene is about 10.4% (that is V 2 O 5 /5G). The addition of graphene has been proven not only to act as an effective conductive network to promote charge transfer and enhance the pseudocapacitance effect on the electrode surface; but also to increase the electrode hydrophobicity, effectively inhibiting the dissolution of vanadium, and promoting the desolvation and diffusion kinetics of hydrated zinc ions. Moreover, the graphene layer, as a structural stabilizer, effectively prevents the structure of the active component V 2 O 5 from collapsing during cycling, contributing to the long-term cycle life.
研究领域:
材料科学
·
电化学
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2019
·Vol. 45
·期 8
·10028-10034
·
IF 3.45
Dengwei Hu,Fan Zhao,Lei Miao,Zhen Zhang,Yan Wang,Hualei Cheng,Yinfeng Han,Meijuan Tian,Hongxi Gu,Rong Ma
The present work investigated the effect of the addition of V 2 O 5 and MnCO 3 on the microstructure and magnetic properties of Ni-Zn ferrite ceramic samples prepared by a conventional ceramic sintering method at different temperatures. With this aim, a series of samples were prepared by varying the loadings of V 2 O 5 -MnCO 3 (un-doped, 0.4–0.1 wt%, 0.1–0.4 wt%, 0.2–0.3 wt%, 0.3–0.2 wt%, and 0.5–0.1 wt%, denoted as sample 1, sample 2, sample 3, sample 4, sample 5, and sample 6, respectively). The initial permeability and power loss of the different Ni-Zn ferrites were investigated with respect to the sintering temperature . The V 2 O 5 and MnCO 3 dopants significantly improved the initial permeability and power loss characteristics of the Ni-Zn ferrite at frequencies ≥0.5 MHz. When sintered at 1100 °C, sample 2 showed a maximum initial permeability of 931.23 H/m at a frequency of 1 MHz combined with a minimum power loss of 339.2 kW/m 3 . Co-doping with V 2 O 5 and MnCO 3 also resulted in the sintered samples with larger average grain sizes and higher density, while the sintering temperature of Ni-Zn ferrites was significantly reduced.
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高影响因子
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
·
2020
·Vol. 37
·期 8
·2000164
·
IF 3.099
Liwei Su,Linhui Liu,Jinpei Hei,Huan Chen,Lianbang Wang,Yuanhao Wang,Manman Ren
V 2 O 5 , as a lithium-free cathode material, has inherent defects such as sluggish kinetics and volume change and, at the same time, requires a lithium metal anode that tends to form dendrites in liquid electrolytes. Both the lithium dendrite and the flammable electrolyte solvent bring longtime safety issues. This work introduces nonflammable inorganic–organic composite solid electrolyte to inhibit the growth of the lithium dendrite and suppress the instability caused by V 2 O 5 nanometerization. However, the long-term cycling and rate performances are still insufficient even when reducing V 2 O 5 size to about 50 nm. As an improvement, sub-10 nm V 2 O 5 /C nanosheets are designed and prepared using corn stalks as precursors through simple impregnation and calcination process. The V 2 O 5 /C offers a much better electrode/electrolyte contact and interface stability than bulk V 2 O 5 and commercial V 2 O 5 in the inorganic–organic composite solid electrolyte. The discharge capacity is 228 mAh g −1 at 0.1 C after 50 cycles and ≈110 mAh g −1 at 2.0 C.
研究领域:
材料科学
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电化学
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纳米能源
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固态电池
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电极材料设计
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高影响因子
Energy Technology
·
2022
·Vol. 10
·期 5
·2101170
·
IF 4.149
Yingchao Wang,Guangshen Jiang,Zhuo Zhang,Hanchu Chen,Yutong Li,Debin Kong,Xin Qin,Yanyan Li,Xinghao Zhang,Hui Wang
Rechargeable Zn-ion batteries (ZIBs) are regarded as one of the most promising energy storage systems due to their non-toxicity, low cost, and non-flammability features. However, exploring flexible and high-capacity devices with prominent cycling still remains a challenge for ZIBs. Herein, a flexible and binder-free carbon cloth coated by V 2 O 5 (namely, CC@V 2 O 5 ) cathode material is prepared through a simple solvothermal method. The cable-like CC@V 2 O 5 provides abundant active sites and highways for electrons transport. Meanwhile, the layered structure of V 2 O 5 can also facilitate zinc ion diffusion. The galvanostatic intermittent titration technique indicates that the zinc-ion diffusion coefficient of CC@V 2 O 5 is much higher than that of the commercial V 2 O 5 . As a result, the CC@V 2 O 5 exhibits excellent electrochemical performance and outstanding bendability arising from the synergistic effect between porous V 2 O 5 and carbon cloth, in terms of a remarkable discharge capacity (296 mAh g −1 at 3 A g −1 ), superior rate capability (241 mAh g −1 at 5 A g −1 ), and long-term stability with a capacity retention of 87.1% over 2200 cycles. The novel strategy proposed in this study may provide guidance for exploiting high-performance flexible systems and wearable energy storage systems.
研究领域:
储能
·
材料科学
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电化学
·
柔性电子学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 5
·3825-3834
·
IF 2.22
Zhang Yanjiao,Zou Zhengguang,Le Shangwang,Li Shengyu,Liu Jie
The layered vanadium pentoxide (V 2 O 5 ) application has a good development potential in lithium-ion battery cathode materials. In this paper, vanadium chloride (VCl 3 ), terephthalic acid, and ethanol were served as crude materials to produce precursors of vanadium-based metal organic frameworks by simple solvothermal method. Porous vanadium oxides were synthesized by heat treatment at different temperatures. The results show that the vanadium pentoxide cathode material has a better electrochemical charge and discharge performance and steady cycle by heat treatment of the precursor at 600 °C. The specific capacity of first discharge of the vanadium pentoxide cathode material obtained by heat treatment at 600 °C reached to 324 mAh/g, and when the current density is 50 mA/g, the capacity retention ratio is still 50.6% after 100 cycles. The capacity retention ratio was increased by 16.6% compared to the heat treatment temperature at 400 °C.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Sirui Li,Hanwen Chi,Denghui Huang,Luqman Ali Khan,Kaixin Wang,Zicheng Zheng,Jianing Mao,Yunna Guo,Liqiang Zhang,Zhizhen Ye,Liping Zhu,Jie Jiang
Pd-decorated V 2 O 5 nanoflowers enable enhanced H2 response and detectable room-temperature sensing. • DRIFTS and DFT reveal catalytic-electronic coupling that promotes H2 dissociation, spillover, and charge transfer. • MEMS-integrated sensors achieve ultralow power consumption of 7.2 mW for portable H2 safety detection. Reliable hydrogen detection under high concentrations and low power consumption is crucial for ensuring safety in industrial environments. Here, we report Pd-decorated V 2 O 5 nanoflowers synthesized via a hydrothermal-impregnation route that achieve a high response of 13.43 to 2000 ppm H 2 at 75 °C—nearly six times that of pristine V 2 O 5 (2.32 at 200 °C)—along with excellent repeatability, selectivity, humidity tolerance, and long-term stability. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) measurements reveal the formation of Pd H and V 4+ = O species even at room temperature and density-functional-theory (DFT) calculations indicate enhanced charge transfer and reduced adsorption energy at the Pd/V 2 O 5 interface. These findings confirm a strong catalytic-electronic coupling effect, in which Pd catalyzes hydrogen dissociation and spillover, while interfacial electron redistribution and vacancy-mediated activation dramatically lower the reaction barrier. This synergistic coupling enables sensitive hydrogen sensing at significantly reduced temperatures. Integration of the Pd/V 2 O 5 layer into a Micro-Electro-Mechanical System (MEMS) platform yields an ultralow power consumption of 7.2 mW, demonstrating promising potential for miniaturized, energy-efficient hydrogen-sensing technologies.
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高影响因子
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