SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2019
·
IF 6.019
Yunxiang Chen,Jingting Zhu,Haibin Ma,Longlong Chen,Rong Li,Ping Jin
Vanadium dioxide (VO 2 ) is an ideal thermochromic material for “smart window” which can reduce energy consumption of air conditioning in modern architectures. However, the application of VO 2 -based smart window is always limited by the poor luminous transmittance ( T lum ), low solar regulation efficiency (Δ T sol ) and unsightly brown color. According to previous researches, compositing has been approved to be an effective method to solve all of above issues for VO 2 -based smart window simultaneously. In this work, a new thermochromic ionic liquid (nickel-bromine-ionic liquid (or Ni-Br-IL, for short)) was synthesized and introduced to be composited with VO 2 nanoparticles for enhanced performance. The composite film demonstrates ultrahigh optical properties : Δ T sol = 27.0%, which is 1.91 times higher than that of pure VO 2 film (14.1%) at a rather high T lum ( T l, lum = 65.9% and T h, lum = 55.3%) with little loss of visible light at high temperature (Δ T lum = 10.6%). Meanwhile, it can be observed the color change from light yellow to green clearly as the temperature rises. Such enhanced performance will benefit the publicity and application for VO 2 -based smart window.
研究领域:
材料科学
·
能源工程
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DOI
高影响因子
RARE METALS
·
2026
·Vol. 45
·期 3
·e70187
·
IF 12.1
Xiuxian Zhao,Junhua Sun,Shudi Ying,Rongchuang Geng,Jiajia Feng,Jiachen Ma,Riming Hu,Panpan Zhao,Xuchuan Jiang,Zheng Liu
en This link goes to a English section zh This link goes to a Chinese section Aqueous vanadium dioxide (VO 2 )-based smart thermal insulation coatings represent a viable strategy to decrease building energy consumption and advance sustainable development goals. However, the inherent instability and limited compatibility with polymer matrices of VO 2 hinder its widespread application. Herein, a core-shell structured nanocomposite, VO 2 @poly(hexafluorobutyl methacrylate- block - N , N -dimethylacrylamide) (VO 2 @PHFBMA- b -PDMA), is developed and applied to water-based intelligent coatings. The experimental results show that the designed block copolymer shell PHFBMA- b -PDMA not only has excellent acid and oxidation resistance but also improves the water dispersion stability of VO 2 , ensuring the compatibility between VO 2 and the organic polymer matrix. Moreover, the shell can effectively increase the carrier concentration in VO 2 , thereby significantly enhancing the local surface plasmon resonance effect and giving it excellent optical performance. By optimizing the formula and incorporating the VO 2 @PHFBMA- b -PDMA nanocomposites into water-based polyurethane resins, the resulting coating exhibits excellent adhesion, high hardness, and strong resistance to thermal cycling and ultraviolet aging. In addition, the coating has significant thermochromic properties, which can transmit near-infrared radiation at low temperatures and effectively shield near-infrared radiation at high temperatures. Compared with uncoated glass, the designed coated glass can reduce indoor temperature by approximately 5°C. 摘要 en This link goes to a English section zh This link goes to a Chinese section 二氧化钒(VO 2 )基水性智能隔热涂料,为实现建筑节能与可持续发展提供了可行策略。然而,VO 2 本身的不稳定性及其与聚合物基质相容性较差的问题,限制了其实际应用。为此,本研究制备了一种核壳结构纳米复合材料,VO 2 @聚(甲基丙烯酸六氟丁酯- b - N , N -二甲基丙烯酰胺) (VO 2 @PHFBMA- b -PDMA),并将其用于水性智能涂料体系。结果表明,所设计的嵌段共聚物壳层PHFBMA- b -PDMA不仅具备优异的耐酸和抗氧化性能,还能显著提升VO 2 在水相中的分散稳定性,并改善其与有机聚合物基质之间的相容性。此外,该壳层能够有效增加VO 2 的载流子浓度,从而显著增强其局域表面等离子体共振效应,赋予材料更优的光学性能。通过配方优化,将VO 2 @PHFBMA- b -PDMA纳米复合材料引入水性聚氨酯树脂中,所得涂层表现出良好的附着力、高硬度、优异的抗热循环与抗紫外老化性能。该涂层还具备显著的热致变色性能,能够在低温状态下允许近红外光透过,而在高温条件下有效阻隔近红外光。与未涂覆的玻璃相比,涂覆该涂层的玻璃可使室内温度降低约5°C。
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Yaxi Liu,Mingyang Fang,Xiaofei Zhu,Ning Wang,Lishi Wang
To address mass heat flux and hazardous hot spots in high-power devices, the phase-change thermal interface materials (TIMs) have attracted intense interest. However, the leakage issue of the organic phase-change materials in the TIMs is still a great challenge to be addressed. Herein, a newly designed phase-change TIMs was constructed with inorganic phase-change VO 2 . In the construction, a 3D hBN–OH–VO 2 oriented thermal network was constructed via ice-templating, followed by epoxy resin (EP) vacuum infiltration. Polyvinyl alcohol (PVA) aqueous solution and tert -butyl alcohol (TBA) solvent were comparatively investigated as inducers for dual-performance channel engineering. Characterization revealed an optimal hBN-OH:VO 2 mass ratio of 4:1. At a low total filler loading of ∼10 wt%, the PVA-assisted TIM achieved thermal conductivities of 0.29 W/m·K (25 °C) and 0.33 W/m·K (80 °C), while the TBA-assisted system exhibited thermal conductivities of 0.34 W/m·K and 0.39 W/m·K, respectively. Additionally, the thermal interface material exhibits a latent heat of up to 1.98 J/g without any component leakage. This study provides a novel strategy for designing highly reliable phase-change TIMs.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Sai Liu,Chi Yan Tso,Hau Him Lee,Yu Wei Du,Kin Man Yu,Shien-Ping Feng,Baoling Huang
Optically transparent wood has emerged as a promising glazing material. Thanks to the high optical transmittance, strong mechanical properties, and excellent thermal insulation capability of transparent wood, it offers a potential alternative to glass for window applications. Recently, thermo-, electro-, and photochromic transparent woods that dynamically modulate light transmittance have been investigated to improve building energy efficiency. However, it remains challenging to widely replace windows with transparent wood because of its poor weather resistance. In this study, an environment-friendly thermochromic transparent wood film (TTWF) with thermal switching of transmittance is proposed and demonstrated. To achieve thermochromism, the bleached wood is impregnated with the vanadium dioxide (VO2)/polyvinyl alcohol composite. Due to the self-densification of cellulose microfibrils during the evaporation of solvents, the transparent wood is in the form of thin films, which can be attached on the inner face of a window to protect it from severe weather conditions, making the installation convenient and low-cost. Furthermore, the surface of VO2-TTWF is modified by octadecyltrichlorosilane to enhance the waterproof ability and achieve self-cleaning and antidust functions. The proposed VO2-TTWF shows great potential for application in energy-efficient buildings using sustainable materials with advanced optical properties (i.e., Tlum = 50.5%, ΔTsol = 3.4%, and haze = 70%) that are mechanically robust (i.e., σ = 130.6 MPa along the wood growth direction), have low-thermal conductivity (i.e., K = 0.29 W m–1 K–1 along the perpendicular direction to the wood fibers), and demonstrate hydrophobic self-cleaning and antidust functions (i.e., contact angle: 121.9°). An experiment, using a model house, showed that the VO2-TTWF attached on the inner face of the window could significantly reduce the indoor air temperature by 33.9 °C compared with a bare glass panel, proving that VO2-TTWF has potential to be applied as a new-generation energy-efficient material for smart windows.
研究领域:
材料科学
·
能源工程
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DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2024
·Vol. 26
·期 14
·2302224
·
IF 3.4
Mtawa Alsaadi,Kittitat Lerttraikul,Sojiphong Chatraphorn,Salinporn Kittiwatanakul
Due to the growing need for smart windows for buildings to reduce energy usage, vanadium dioxide (VO 2 ) has been investigated as a potential material for thermochromic smart windows due to its ease of implementation and simplicity in industrial production. VO 2 undergoes a reversible phase shift from a monoclinic (M, P21/c) semiconductor to a rutile (R, P42/mnm) metal at a critical temperature of 68 °C. This transition is accompanied by acute variations in IR reflectance, transmittance, and electrical resistance. Despite substantial developments in thermochromic materials, their optical and transition properties are still unsatisfactory. In the past several decades, many methods for enhancing optical properties have been reported, including composite films, multilayer structures, and element doping. Recent developments in thermochromic smart windows to improve both optical properties and durability have been surveyed in this review. Additionally, future growth trends have been provided by the possibility of commercially manufacturing VO 2 smart windows.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Xuezhen Zhai,Xiaohong Chen,Yongqi Wu,Xuzhe Wang,Cui Shang,Lamei Zhang,Chengzhou Zhao,Huawei Zhang,Jimin Shang,Dewei Liu
The VO 2 (B) cathode materials maintain high stability during the zinc ion embedding/removal process, making it a research hotspot in positive electrode materials for water-based zinc ion batteries . However, its poor ion diffusion kinetics and intrinsic semiconductor properties have become the main reasons limiting the enhancement of the specific capacity and rate performance. Herein, the function of Co-doping on the microstructure, morphological characteristics, transport characteristics and electrochemical performances of the Co x V 1- x O 2 (B) nanorods were comparatively investigated. The Co 0.05 V 0.95 O 2 (B) cathode has the highest specific capacity and unmatched cycle stability. The optimized electrochemical performance was mainly due to the synergistic optimization of grain distortion, grain size and oxygen vacancy inside the lattice. The electrochemical kinetics results show that the Co 0.05 V 0.95 O 2 (B) cathodes were capacitor and battery hybrid characteristics. The above conclusions provide a good idea and experimental verification for applying VO 2 (B) cathode in the water-based zinc ion batteries market.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
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纳米材料
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半导体物理
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电极工程
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Hao Liu,Pan He,Jiaxin Cao,Tao Duan,Qingquan Kong,Weitang Yao
The nature of vanadium oxides with multiple valence states and a rich species of oxides facilitates the construction of high performance batteries. Among these, vanadium dioxide (VO 2 ), despite offering several advantages, is seldom reported in anode materials due to its inferior cycling stability and rate performance caused by large volume changes. Herein, we employed a rational structural strategy to assemble VO 2 -NTs/Ti 3 C 2 anode with a multidimensional cross-linked structure using VO 2 nanotubes (VO 2 -NTs) and Ti 3 C 2 T x MXene . Specifically, the abundant multidimensional channels of VO 2 -NTs/Ti 3 C 2 reduce the diffusion impedance of the ions, and the enhanced intrinsic conductivity and highly robust structure solve the problems originally present in VO 2 , which are verified in characterization and density functional theory calculations. Consequently, the composite electrode shows ultra-high reversible capacity (1425 mAh g −1 at 1 A g −1 ), excellent cycling performance (516 mAh g −1 at 5 A g −1 after 2000 cycles) and superior rate performance (703 mAh g −1 at 10 A g −1 ), and also exhibits decent sodium storage performance, representing the best comprehensive battery performance of VO 2 -based anodes to date.
研究领域:
材料科学
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电化学
·
储能技术
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Jin Qin,Yanlong Cao,Boxin Wei,Dafeng Lin,Yu Zhao
Vanadium dioxide (VO 2 ) is a promising thermochromic material for smart windows; however, its practical application is limited by a relatively high phase transition temperature ( T c ) and insufficient modulation capability in both luminous transmittance ( ) and solar energy ( ). Cation co-doping serves as an effective strategy for optimizing its thermochromic performance near room temperature. W-Ti co-doped VO 2 films were fabricated via a two-step rapid thermal processing (RTP) annealing method using vanadyl acetylacetonate as the precursor. The co-doping of W and Ti leads to an enhancement in the thermochromic performance of the VO 2 thin films. The phase transition temperature ( T c ) was reduced from 69.75 °C to 52.35 °C. By adjusting the Ti doping content, the co-doped films maintained a low Tc while improving the luminous transmittance modulation ( ) from 39.8% to 46.1% and the solar energy modulation ability ( ) from 6.3% to 9.3%. These improvements are attributed to modifications in the band structure induced by W-Ti co-doping. The enhanced thermochromic performance, compared with that of undoped VO 2 , demonstrates that W-Ti co-doping provides a promising strategy for advancing VO 2 -based smart window applications.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yuda Lin,Kaihui Lin,Xiaohui Xu,Junjie Chen
In this paper, a new composites material Zn 3 V 3 O 8 /VO 2 @Nitrogen graphene (ZnVO/VO 2 @NG) was synthesized, and its structural features and electrochemical properties were systematically characterized. The electrochemical analysis reveals that the electrode exhibits fast electron/lithium ion transport kinetics, and its pseudocapacitive behavior storage characteristics can achieve ultra-fast dynamic response. The ZnVO/VO 2 @NG electrode maintains a high reversible specific capacity of 995 mAh g -1 after 700 cycles at 1 A g -1 , and an impressive rate capability of 540 mAh -1 at 5 A g -1 . In addition, first-principles calculation reveals that ZnVO/VO 2 @NG exhibits zero-bandgap metallic properties with excellent electrical conductivity. Meanwhile, differential charge density and adsorption energy calculations further demonstrates that Li-ions at the interface of ZnVO and NG have a charge transfer as high as 1.71 eV, and a corresponding adsorption energy of -5.46 eV, which suggests the existence of strong lithium interactions at this interface. These findings provide an important theoretical basis for a deeper understanding of the lithium ion storage properties at the heterogeneous interface.
研究领域:
材料科学
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电化学
·
理论计算
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DOI
高影响因子
Advanced Optical Materials
·
2023
·
IF 9
Bin Li,Shouqin Tian,Longxiao Zhou,Senwei Wu,Tingfeng Ma,Guanjie He,Baoshun Liu,Xiujian Zhao
Vanadium dioxide (VO 2 ) has attracted widespread attention due to its extraordinary thermochromic properties. Visually transparent VO 2 films hold great promise for applying in smart windows, smart radiative coolers, solar cells, and microwave absorbing windows. However, it remains a huge challenge to simultaneously achieve ultra-high luminous transmittance ( T lum ) and excellent thermochromic performance due to their contradictory relationship. Here, a fully discrete VO 2 particulate (FDVP) film is developed. It shows an ultra-high T lum of 92.7% due to the reflectance being significantly reduced. Below the phase transition temperature ( T c , 69.1 °C), it is highly transparent to near-infrared (NIR) light, while above T c , it blocks NIR light through the strong localized surface plasmon resonance (LSPR) effect, resulting in an excellent solar energy modulation (Δ T sol ) of 10.5% for smart windows. In addition, a 3.5 at.%W-doped FDVP film exhibits a desired T c of 25.8 °C, an extremely narrow hysteresis width (Δ T ) of 4.6 °C, and good optical properties ( T lum = 92.0%, Δ T sol = 8.2%). The performance represents a new milestone for thermochromic VO 2 films. This work will shed light on the structural design for high-performance VO 2 films.
研究领域:
材料科学
·
纳米技术
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DOI
高影响因子
IONICS
·
2023
·Vol. 29
·期 7
·2783-2791
·
IF 2.8
Xu Wengang,Xie Qizhen,Chen Xiaobo,Wu Mingjun,Zhang Jun,Ru Qiang
Aqueous zinc-ion batteries (AZIBs) are considered to be one of the potential alternatives for lithium-ion batteries. Vanadium-based oxides as cathode materials have aroused increasing attention because of their advantages, such as low cost and high specific capacity. But its rapid capacity decay prompted researchers to explore various modified techniques. Herein, an electrolyte modification strategy by introducing acid trisodium salt (EDTA-3Na) additive to 2 M ZnSO 4 solution is developed to stimulate high reversible zinc storage. The desolvation effect of EDTA-3Na in the electrolyte optimizes the zinc deposition behavior and inhibits the formation of zinc dendrites, which could reduce the resistance of the VO 2 //Zn full cells and accelerate the reaction kinetics of the cathode. The VO 2 //Zn full cells can present a high zinc storage capability of 281.5 mAh g −1 at a high current density of 5 A g −1 after 1000 cycles and deliver prominent rate performance of 403.6, 373.5, 343.1, and 297.6 mAh g −1 at 1, 2, 4, and 8 A g −1 respectively.
研究领域:
储能
·
电化学
·
材料科学
·
电池技术
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DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2019
·Vol. 91
·期 2
·302-309
·
IF 1.986
Zou Jian,Xiao Lei,Zhu Li,Chen Xuanyan
In this study, monoclinic vanadium dioxide (VO 2 ) nanoparticles were synthesized by one-step rapid hydrothermal treatment of a sol precursor, and the obtained products were examined using various analytical methods. Results indicated that monoclinic VO 2 nanoparticles could be obtained using ammonium metavanadate as the precursor at a high concentration of 2.37 M and the shortest duration was only 1 h. X-ray diffraction (XRD) revealed that VO 2 presented high crystallinity with a pure monoclinic phase. Phase transition latent heat of VO 2 was estimated to be 45.5 J/g. Furthermore, VO 2 powders were mostly composed of granules with a size distribution ranging from 20 nm to 100 nm. Monoclinic VO 2 nanoparticles were derived from the decomposition of the intermediate (NH 4 ) 2 V 4 O 9 .
Monoclinic vanadium dioxide (VO 2 ) nanoparticles can be synthesized by one-step rapid hydrothermal treatment of sol precursor with high concentration.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）