Journal of Energy Storage
·
2025
·
IF 9.8
Xuezhen Zhai,Xiaohong Chen,Ruihan Li,Lamei Zhang,Xuzhe Wang,Cui Shang,Chengzhou Zhao,Huawei Zhang,Jimin Shang,Dewei Liu
VO 2 (B) has emerged as a promising cathode candidate for aqueous zinc-ion batteries (ZIBs) due to its unique tunnel-structured framework that facilitates zinc ion transport. Nevertheless, practical implementation faces challenges including limited coulombic efficiency, inadequate cycling stability, and restricted rate capability, primarily attributed to poor electrical conductivity and strong Zn 2+ interionic repulsion. In this work, Al 3+ is selectively incorporated into VO 2 (B) and induced structural optimization in Al x V 1- x O 2 (B), where controlled lattice contraction and electronic structure modification near the Fermi level. Aluminum doping induces 3D morphology that enhances ion diffusion pathways and electrolyte interaction. The engineered material exhibits enhanced electrochemical kinetics through oxygen vacancy formation (providing active sites) and substantially improved pseudo-capacitive charge storage. The optimized Al 0.05 V 0.95 O 2 (B) cathode achieves a remarkable specific capacity of 364.7 mA·h·g −1 at 0.1 A/g, while maintaining 91.64 % capacity retention after 2000 cycles under high-current operation (5.0 A/g), demonstrating superior electrochemical stability.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2015
·
IF 4.321
Xianxiang Liu,Jiafu Xiao,Hui Ding,Wenzhou Zhong,Qiong Xu,Shengpei Su,Dulin Yin
Amino modified SBA-15 (SBA-NH 2 ) was used to immobilize vanadyl (VO 2+ ) and cupric (Cu 2+ ) ions, giving SBA-NH 2 -VO 2+ and SBA-NH 2 -Cu 2+ catalysts, respectively, and the as-prepared catalysts were characterized by XRD, XPS, TEM and Nitrogen adsorption–desorption technologies. The catalytic performance of the SBA-NH 2 -VO 2+ catalysts for the oxidation of HMF can be enhanced by the use of SBA-NH 2 -Cu 2+ as the co-catalyst. Several important reaction parameters were investigated, and it was found that the reaction solvent showed a great effect on the oxidation of HMF. The highest HMF conversion and product selectivity were obtained in aromatic solvents. The highest HMF conversion reached 98.8% at 110 °C in 4-chlorotoluene, affording DFF and 2,5-furandicarboxylic acid (FDCA) with yields of 28.9% and 62.7%, respectively. More importantly, the catalysts could be recycled and showed no significant decrease of their catalytic activities.
研究领域:
化学工程
·
催化材料
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产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yunxin Ai,Zhaoqi Zhu,Weijun Liu,Hanxue Sun,Jiyan Li,Rui Jiao,An Li
The development of high-performance flame-retardant materials with favorable thermal insulation properties is crucial for mitigating fire hazards and energy consumption in applications such as packaging and modern buildings. In this study, flame-retardant microcapsules (VUMF-APP) were synthesized via microencapsulation and electrostatic self-assembly with ammonium polyphosphate (APP) as the core, urea–melamine–formaldehyde (UMF) resin as the shell, and thermoelectric-responsive VO2 (M) as the functional outer layer. These microcapsules were incorporated into epoxy resin (EP) to enhance the composite’s (VUMF–APP–EP) thermal stability, flame retardancy, and intelligent early warning function. The VUMF–APP–EP composite exhibits notable thermal insulation performance with a thermal conductivity of 0.0117 W m–1 K–1. Compared to pristine EP, the composite shows reductions of 46.7% in peak heat release rate (pHRR) and 78.3% in total smoke production (TSP) and achieves a UL-94 V-0 rating, indicating its effective flame-retardant characteristics. Owing to the thermoelectric-responsive property of VO2 (M) decorated onto the microcapsules, the epoxy resin composite demonstrates an intelligent early warning function, triggering alerts before fire ignition while maintaining flame retardancy. This dual functionality contributes to timely fire prevention and the reduction of potential property damage and casualties.
研究领域:
材料科学
·
聚合物复合材料
·
消防安全工程
·
智能材料
·
热电材料
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 9
·5189-5194
·
IF 3.108
Haining Ji,Dongqing Liu,Haifeng Cheng,Chaoyang Zhang,Lixiang Yang,Dewei Ren
Monoclinic VO2 nanopowders were synthesized using a malic acid-assisted hydrothermal method. The derived VO2 nanopowders were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy and scanning electron microscopy. The phase transition properties of the monoclinic VO2 nanopowders were studied using differential scanning calorimetry, which displayed an obvious phase transition at 67.2 °C with a narrow thermal hysteresis width of 4.9 °C. Also, the resistance–temperature relationship and the thermal infrared images in the waveband 7.5–13 μm were analyzed. The results showed that the VO2 samples have excellent electrical properties with resistance changes as large as two orders of magnitude. The VO2 nanopowders obtained can control their infrared radiation intensity actively and lower their radiation temperature. Furthermore, the stability of the VO2 nanopowders was investigated. The results showed that the VO2 nanopowders have good thermal stability, oxidation resistance below 375 °C in an air atmosphere and humidity resistance, which has great application prospects in adaptive infrared camouflage technology.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2019
·
IF 6.019
Zhe Qu,Lin Yao,Shihui Ma,Jing Li,Junhui He,Jie Mi,Siyao Tang,Lili Feng
For vanadium dioxide (VO 2 )-based smart windows, insufficient optical performances, including luminous transmittance ( T lum ) and solar modulation efficiency ( ΔT sol ), have always been the main problems hindering their practicality as energy-efficient windows, which have attracted numerous studies in recent years. However, the improved T lum are always obtained at the expense of ΔT sol , and vice versa. In this work, we report a controllable interfacial engineering strategy for the fabrication of multifunctional hollow SiO 2 nanospheres (HSNs)/VO 2 bilayer coatings with tunable optical performance and mechanical robustness on the basis of finite difference time domain (FDTD) calculation. The theoretical calculation predicted that the T lum of the bilayer coatings can be enhanced from 42.7% to 55.2% without sacrificing the ΔT sol . Surprisingly, experiments showed that not only the T lum of the optimized bilayer coating increased to 53.8% from 21.4%, but also the ΔT sol enhanced from 9.8% up to 17.2%. It is believed that the outstanding optical performance comes from the low refractive index of HSNs as well as good dispersibility of VO 2 nanoparticles . Moreover, the pencil hardness test , tap peeling test and sand impact abrasion test showed remarkable mechanical robustness of the bilayer coating, which makes it highly attractive for application in the windows of high-rise buildings.
研究领域:
材料科学
·
能源工程
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DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 9
·4516-4524
·
IF 10.733
Nan Shen,Shi Chen,Weijun Wang,Run Shi,Pengcheng Chen,Dejun Kong,Yuxing Liang,Abbas Amini,Jianbo Wang,Chun Cheng
Vanadium dioxide (VO2) is emerging as the most promising candidate for next-generation smart windows. However, the applications of VO2-based films encounter the bottleneck of its optimal thermochromic property being unable to be retained as the modulating phase transition temperature approaches the ambient temperature. Joule heating is an effective approach to maintain the infrared switching ability of pristine VO2 films, but the accompanied energy consumption and its effects on the infrared switching ability of flexible VO2 films are still unexplored. Here, we fabricated flexible VO2 nanoparticle films via a scalable blade-coating process and investigated the effects of Joule heating on the infrared switching of flexible VO2 films. Infrared switching triggered by Joule heating can be effectively managed by the input voltages with high stability and exhibited no obvious degradation even after 10 000 bending cycles, suggesting excellent flexibility. Importantly, we found that maximum infrared switching ability could be sustained with a dramatically reduced power, 15% of the threshold power (224 mW cm−2), by utilizing the hysteresis behaviour of the as-prepared VO2 films. This study provides a practical strategy for utilizing hysteresis behaviour to maintain the optimal infrared switching ability of flexible VO2 films with low energy consumption, substantially promoting the development of flexible smart devices.
研究领域:
材料科学
·
智能材料
·
建筑节能
·
纳米技术
·
柔性电子学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Xiaoyan Xiang,Yang Liang,Jincheng Liu,Wenxin Yang,Bingjie Li,Lei Li,Yanxiong Fang
VO 2 nanorods and V 3 O 7 nanowires were synthesized and coupled with ZnIn 2 S 4 via solution method. • V 3 O 7 -ZIS and VO 2 -ZIS exhibit opposite interfacial charge transfer: ZIS.→V 3 O 7 vs. VO 2 →ZIS. • Both composites show broadened visible-light absorption and enhanced charge separation efficiency. • Optimized V 3 O 7 -ZIS-150 delivers 30.14 mmol g −1 h −1 H 2 evolution with excellent stability. • S-scheme V 3 O 7 -ZIS preserves strong redox power and promotes ·O 2 − and ·OH generation. Solar-driven photocatalytic hydrogen evolution is crucial for sustainable energy conversion but is limited by insufficient charge separation and weak redox capability. Herein, VO 2 -ZnIn 2 S 4 (ZIS) and V 3 O 7 -ZIS heterojunctions were rationally constructed via a two-step synthesis, anchoring ZIS nanosheets onto VO 2 nanorods and V 3 O 7 nanowires. Optimized V 3 O 7 -ZIS-150 achieves an exceptional H 2 evolution rate of 30.14 mmol g −1 h −1 , 2.72 times higher than VO 2 -ZIS. X-ray Photoelectron Spectroscopy (XPS), electrochemical, and electron spin resonance (ESR) analyses reveal S-scheme configurations for both heterojunctions: electrons transfer from the V 3 O 7 conduction band (CB) to the ZIS valence band (VB), and from the ZIS CB to the VO 2 VB, preserving strong reduction/oxidation potentials. V 3 O 7 -ZIS has a more negative VB potential than VO 2 -ZIS, enhancing hole oxidation and •O 2− /•OH generation, thereby boosting H 2 activity. This comparative study demonstrates that engineering V 3 O 7 -based S-scheme heterojunctions is effective for high-performance photocatalysts, providing mechanistic insights for sustainable energy applications. Download: Download high-res image (353KB) Download: Download full-size image
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DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2017
·
IF 4.784
Haining Ji,Dongqing Liu,Chaoyang Zhang,Haifeng Cheng
VO 2 has attracted extensive attention as an adaptive camouflage material due to its structural change during the metal-insulator transition (MIT) at 68 °C, which can fast respond to ambient temperature and actively modulate infrared emissivity. However, the thermal instability and undesirable color have restricted its applications in multi-spectral camouflage. In this study, the VO 2 /ZnS core-shell nanoparticles were synthesized via a homogeneous precipitation method. The VO 2 nanoparticle core exhibited a remarkable infrared emissivity modulation ability in the mid-wavelength and long-wavelength thermal atmospheric windows. The ZnS shell, as an infrared transparent material , not only modified the color of VO 2 nanoparticle from unpleasant blue-black to gray-green that adapts to visible camouflage in the woodland background, but also significantly enhanced the oxidation resistance . This is the first report of such a single nanoparticle structure with both variable infrared emissivity and desirable color that offer significant potential for multi-spectral camouflage application.
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 30
·15907-15915
·
IF 3.9
Bai Mengmeng,Wang Qiao,Liu Xiaoqing,Chen Lichun,Zhang Yujie,Qi Guisheng,Yuan Zhiguo,Yu Chuang,Jiao Weizhou,Liu Youzhi
Vanadium dioxide (VO 2 ) has gained significant
attention
as a promising cathode for aqueous zinc-ion batteries (AZIBs), benefiting
from its multivalent characteristics and structurally versatile frameworks.
Nevertheless, its practical implementation is hampered by strong electrostatic
interactions and sluggish reaction kinetics, which collectively restrict
the achievable performance of vanadium-based electrodes. In this study,
we implement an anion doping strategy by utilizing selenium (Se) to
concurrently engineer accelerated electrochemical kinetics. As a result,
the Se-doped VO 2 electrode achieves an approximately order-of-magnitude
improvement in the Zn 2+ diffusion coefficient (up to ∼10 –13 cm 2 s –1 ) and a low
charge transfer activation (345 meV) compared to those of pristine
VO 2 and P-doped VO 2 . The Se-VO 2 cathode
delivers a remarkable cycling stability, retaining a discharge capacity
of 173 mA h g –1 after 2000 cycles at 4 A g –1 . It also exhibits superior rate capability, sustaining 305 mA h
g –1 even at a high rate of 20 A g –1 . Ex-situ structural analyses revealed that Se-VO 2 cathode
undergoes a phase transformation to Zn 3+ x (OH) 2 V 2 O 7 ·2H 2 O during
the initial discharge, followed by amorphization in the subsequent
charge process. This amorphous configuration is shown to be highly
favorable for Zn 2+ storage within the VO 2 lattice.
This work demonstrates that rational anion doping can effectively
modulate the electron transfer and Zn 2+ diffusion properties
of oxide cathodes, offering a viable pathway toward long-lasting AZIBs
with high power density.
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yutao Wu,Wenxia Liu,Zhaoping Song,Dehai Yu,Guodong Li,Xiaona Liu,Huili Wang
The development of functional window films for energy savings and privacy protection has attracted considerable attention. Herein, a functional nanocellulose film was fabricated via a papermaking technique by using the naturally formed network structure of nanocellulose film to obtain privacy protection and to encapsulate paraffin particles stabilized by W-doped VO 2 nanoparticles and chitosan. The paraffin particles stabilized by W-doped VO 2 nanoparticles and chitosan were prepared via an emulsion approach without using surfactant. The incorporation of paraffin into the nanocellulose film not only enhances the latent heat and lowers the forward transmittance of the nanocellulose film but also improves its hydrophobicity. The presence of a small amount of W-doped VO 2 nanoparticles in the paraffin particle dispersion further increases the forward transmittance and latent heat of the nanocellulose film, especially at elevated temperatures. Meanwhile, the introduction of chitosan in the paraffin particle dispersion significantly improves the toughness of the nanocellulose film. Consequently, the incorporation of paraffin particles endows the nanocellulose film with hydrophobicity and toughness as well as good privacy protection and thermal insulation for energy savings at both room and elevated temperatures, making the as-prepared nanocellulose film a promising functional window film.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2026
·
IF 4.5
Jingxiao Liu,Ruiqi Hou,Zixuan Wang,Jiaxiang Wan,Peng Zhou,Yefan Jia,Wei Wang,Fei Shi
Highly porous VO 2 -SiO 2 composite aerogels were in-situ prepared via CO 2 supercritical drying. • The VO 2 -SiO 2 aerogel films exhibited high sunlight modulation and thermal insulation performance. • The VO 2 -SiO 2 aerogel can be used for smart windows due to its thermochromism/thermal insulation synergy and good durability. Vanadium dioxide (VO 2 ) shows great potential for applications in smart windows due to its reversible metal-insulator phase transition and unique thermochromism, but its low visible transparency and poor stability require further improvement, and low thermal conductivity is vital for energy-saving windows. Herein, a thermochromic VO 2 -SiO 2 composite aerogel with high thermal insulation and high stability was in-situ synthesized via sol-hydrothermal and CO 2 supercritical drying process. The results demonstrate that the VO 2 -SiO 2 composite aerogels possess a highly porous structure, with a large pore volume ranging from 1.44 to 2.15 cm 3 /g and an average pore diameter of 11.24-19.00 nm. The as-prepared VO 2 -SiO 2 aerogel/PMMA composite films with V/Si molar ratio of 3 exhibit the highest solar modulation ability (Δ T sol = 12.84%) and at 90°C, exhibits a surprising increase in visible light transmittance, reaching the highest value of 48.87%, which is 4.49% higher than that at 20°C. Moreover, the thermal insulation performance test results indicate that all the composite aerogel films exhibit good thermal insulation performance, and maintain excellent thermal stability after 30 cycles of thermal insulation tests. This study presents a novel strategy for fabricating VO 2 -SiO 2 composite aerogels, which can fully exploit the synergistic effect between VO 2 and SiO 2 aerogels, showing great application potential for energy-saving windows. Download: Download high-res image (365KB) Download: Download full-size image
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DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xiaohong Chen,Xuezhen Zhai,Yongqi Wu,Xuzhe Wang,Lamei Zhang,Cui Shang,Huawei Zhang,Chengzhou Zhao,Jimin Shang,Dewei Liu
Vanadium-based oxides have gained significant attention as promising cathode materials for aqueous zinc-ion batteries, owing to their high theoretical capacities, the ability to undergo multi-electron transfer, and varied crystal structures. Despite these advantages, challenges related to structural instability and poor electrical conductivity remain significant barriers to their practical application. In this study, Cr-doped VO 2 (B) nanorods were prepared using a hydrothermal treatment process as a promising candidate for aqueous zinc-ion battery cathodes. The multivalent nature of vanadium promotes a variety of redox reactions, resulting in high specific capacities. Chromium ion doping increases oxygen vacancy defects and provides efficient channels for electron transfer. The nanorod morphology offers an increased specific surface area, thereby promoting a higher density of active sites. Positron annihilation lifetime spectroscopy indicates that the generated defects exist in the form of single vacancies. Thanks to the unique tunnel structure and micro-morphology advantages, the CrVO cathode exhibits rapid electron transfer and superior reaction kinetics. Electrochemical performance is optimized at a chromium ion doping concentration of 6 at.%, achieving a high specific capacity of 312.8 mAh g −1 at 0.1 A g −1 and retaining 188.3 mAh g −1 at 5 A g −1 after 2000 cycles, with a remarkable capacity retention of 90.39 %, indicating exceptional long-term cycling stability. This work optimizes the electrochemical performance by introducing different concentrations of chromium ions into the monoclinic VO 2 , thereby altering the Cr 3+ /Cr 6+ and V 4+ /V 5+ ratio, providing a feasible approach for developing high-performance vanadium-based aqueous zinc-ion battery cathodes.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）