MATERIALS CHEMISTRY AND PHYSICS
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2018
·
IF 2.21
Han Zhang,Sixv Zhu,Beibei Guo,Dongyun Wan,Hongjie Luo,Yanfeng Gao
This work first reports the controllable preparation of rGO/VO 2 (B) intercalation films via a simple sol-gel method at relative low temperature (420 °C). The excellent conductance and thermal conductivity of rGO could significantly enhance the performance and sensitivity of VO 2 (B) films to be used for uncooled infrared detectors . Aluminum (Al) reduction is introduced to reduce the oxygen-containing functional groups of graphene oxide (GO) and V 2 O 5 of GO/V 2 O 5 intercalation films in a two-zone furnace. According to our results, the reduced-GO (rGO), as a fast channel for electron transport , was inserted into the VO 2 (B) film, and thus the electron transfer between rGO/VO 2 (B) intercalation films occurs much faster than in pure VO 2 (B) films. The film preparation processes were optimized through adjusting the doping concentration of rGO, and rGO/VO 2 (B) intercalation films with applicable temperature coefficient of resistance (TCR) (−2.78%/K) and square-resistance (21.22 kΩ) were achieved. Our work provided a promising and feasible technique to convict the cost and complexity of high vacuum method used to fabricate the VO 2 thermal sensing thin films .
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RSC Advances
·
2014
·Vol. 4
·期 25
·13026-13033
·
IF 3.708
Wenjing Li,Shidong Ji,Yamei Li,Aibin Huang,Hongjie Luo,Ping Jin
Thermochromic VO2 particles, which have potential applications in “smart windows” for energy saving, have been successfully prepared by a convenient route combining homogeneous precipitation and hydrothermal processes. As a result, the particle size can be easily tuned from several tens to hundreds of nanometers by controlling the initial vanadium source concentration. Lower concentration yielded large rod-like crystals, while high concentration resulted in small near-spherical nanocrystals. The decrease of the size of VO2 particles leads to an improvement in thermochromic properties, along with a wider hysteresis of the phase transition temperature. In addition, the W-doping can effectively tune the phase transition temperature (Tc) down to ambient temperature with the efficiency of about −21.3 °C per at% W in the doping range from 0 to 2.0 at% W.
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RARE METALS
·
2025
·
IF 11
Hou Yao-Lin,Zhang Yu-Qing,Li Dan,Xie Hai-Ming,Liu Jia,Liu Yu-Long,Zhu Jie-Fang
Developing effective heterostructure strategies to mitigate the shuttling effect and accelerate lithium polysulfide (LiPS) conversion remains a critical challenge in lithium–sulfur (Li–S) batteries. Here, we report the first carbon–free VO 2 –VS 2 heterostructure material synthesized via in situ sulfurization, applied as a modifier on a commercial polypropylene (PP) separator (denoted as VO 2 –VS 2 @PP). The as–prepared VO 2 –VS 2 nanorods synergistically combine the high absorptivity of VO 2 with the efficient catalytic properties of VS 2 , simultaneously enhancing LiPS anchoring and promoting its conversion. We systematically investigate the influence of material composition on battery performance, leveraging these functional attributes, Li–S cells incorporating VO 2 –VS 2 @PP exhibit exceptional cycle stability (over 500 cycles at 1C), impressive rate performance (807 mAh·g –1 at 5C), desirable reversibility (49.9% capacity retention after 300 cycles at 5C) and exceptional pouch cell performance (3.65 mAh·cm –2 after 50 stable cycles at 0.1C). This study underscores the potential of tailored heterostructures in realizing high–performance Li–S batteries, offering new insights for next–generation energy storage solutions. Graphical abstract
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yangjie Li,Xiangyue Liao,Bin Xie,Yuanxia Li,Qiaoji Zheng,Dunmin Lin
Vanadium dioxide-based materials have been proved to be promising cathodes for aqueous zinc ion batteries (AZIBs) due to their cost-effectiveness and high theoretical specific capacity; nevertheless, the low electronic conductivity and poor cycle stability restrict their application. Herein, hollow VO 2 microspheres anchored on graphene oxide (H-VO 2 @GO) are synthesized via a facile simple hydrothermal reaction as high-performance cathodes for AZIBs. The hollow micromorphology of the material provides a large specific surface area and effectively alleviates the volume changes during cycling, while the anchoring of VO 2 on graphene oxide greatly improves the electronic conductivity and inhibits the agglomeration and pulverization of the material. Resulting from the combination of unique micromorphology and graphene oxide anchoring, the as-prepared H-VO 2 @GO exhibits the impressive specific capacity of 400.1 mAh/g at 0.5 A/g and excellent cycling performance with 96.1 % of capacity retention after 1500 cycles at 10 A/g. This investigation provides a use reference for designing high-performance cathodes materials for AZIBs by optimizing the microstructure of electrode materials.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Yunxiang Chen,Xianzhe Zeng,Jingting Zhu,Rong Li,Heliang Yao,Xun Cao,Shidong Ji,Ping Jin
For VO2-based thermochromic smart windows, high luminous transmittance (Tlum) and solar regulation efficiency (ΔTsol) are usually pursued as the most critical issues, which have been discussed in numerous researches. However, environmental durability, which has rarely been considered, is also so vital for practical application because it determines lifetime and cycle times of smart windows. In this paper, we report novel VO2@ZnO core–shell nanoparticles with ultrahigh durability as well as improved thermochromic performance. The VO2@ZnO nanoparticles-based thermochromic film exhibits a robust durability that the ΔTsol keeps 77% (from 19.1% to 14.7%) after 103 hours in a hyperthermal and humid environment, while a relevant property of uncoated VO2 nanoparticles-based film badly deteriorates after 30 h. Meanwhile, compared with the uncoated VO2-based film, the VO2@ZnO-based film demonstrates an 11.0% increase (from 17.2% to 19.1%) in ΔTsol and a 31.1% increase (from 38.9% to 51.0%) in Tlum. Such integrated thermochromic performance expresses good potential for practical application of VO2-based smart windows.
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高影响因子
Journal of Materiomics
·
2024
·
IF 8.4
Jin Li,Chunhui Zhang,Yunxiang Chen,Ke Jiao,Zhang Chen,Yifei Liu,Yanfeng Gao,Zongtao Zhang
Smart windows are an important strategy to reduce the energy consumption in buildings, which accounts for as much as 30%–40% of the society’s energy consumption. VO 2 -based thermochromic materials can intelligently regulate the solar heat gains of building interiors. However, the unmatched thermal emissivity ( ɛ ) modulation of traditional VO 2 /glass systems, i.e. , high emissivity at low temperatures and low emissivity at high temperatures, leads to additional heating and cooling energy loads in winter and summer, respectively. In this study, we propose a novel VO 2 /polyacrylonitrile (PAN)/AgNW multilayer possessing flexible Ag nanowire supported Fabry–Pérot cavities, which synchronously achieves high modulation abilities in both solar spectrum ( ΔT sol of 13.6%) and middle infrared region ( Δɛ of 0.50 at 8–13 μm). These achievements are the best among reports for pure VO 2 smart windows. This study provides a flexible and effective protocol to dynamically enhance the light and heat utilization for practical building windows.
研究领域:
材料科学
·
能源技术
·
光学工程
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CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Hainan Zhang,Shuhui Liang,Jianwei Zhang,Xiangge Han,Weiqi Zhou,Jia Gao,Yaohua Li,Shuliang Dou,Yao Li,Feifei Ren
Vanadium dioxide (VO₂) undergoes reversible metal–insulator transitions at critical temperature of 68 °C, rendering it promising for tunable electromagnetic applications. Here, Cr-doped VO₂/Ethyl cellulose (EC) composites are synthesized to raise the transition temperature to 87 °C while retaining shielding effectiveness values of 9.9–26.3 dB (X-band) and 10.2–25.2 dB (Ku-band). Notably, the surface temperature of material plateaus at 70 °C after exposure to one sun for 10 min, preventing passive phase transitions under light exposure. This work provides valuable insights into the design of intelligent electromagnetic interference shielding materials with active thermal regulation capabilities.
研究领域:
材料科学
·
电磁功能材料
·
智能响应材料
·
热管理
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Saleem Raza,Xiaolan Wu,Qianqian Liu,Pengfei Zhang,Pei Zhang,Xiaoxian Su,Prabhu Sengodan,Yasin Orooji,Rui Zhang
The synergistic integration of photocatalytic nanomaterials with hydrogel matrices has emerged as a promising strategy for sustainable wastewater treatment due to their biocompatibility, stability, and cost-effectiveness. In this study, a multifunctional hydrogel was fabricated through a green synthesis route by embedding Fe₃O₄@VO₂–polydopamine (PDA) composites into a sodium alginate (SA) network via a two-step cross-linking process. Fe₃O₄ nanoparticles were synthesized by co-precipitation, followed by water bath growth of Fe₃O₄@VO₂ and in situ PDA deposition to improve interfacial stability and charge transfer. The resulting Fe₃O₄@VO₂-PDA-SA/H hydrogel exhibited excellent magnetic recoverability, high photocatalytic efficiency, and structural robustness. Malachite green (MG) and tetracycline hydrochloride (TCH), representative contaminants from aquaculture wastewater, were employed as target pollutants. The composite achieved maximum photodegradation efficiencies of 98.39 % for MG and 87.03 % for TCH, with only moderate efficiency loss after five consecutive cycles (retaining 88.38 % and 61.03 % removal, respectively). Radical quenching experiments revealed that •OH and •O₂ − played dominant roles in pollutant degradation, confirming a synergistic photocatalytic mechanism. These findings demonstrate that Fe₃O₄@VO₂-PDA-SA/H not only ensures efficient and stable photocatalysis in complex aqueous environments but also offers facile recyclability, highlighting its potential as a practical material for advanced wastewater remediation.
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COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Mengyao Li,Changqing Fang,Youliang Cheng,Xin Zhang,Jie Liu,Kun Xiang,Yue zhang
The rapid advancement of infrared detection technologies poses formidable challenges to conventional stealth materials. However, most existing infrared stealth materials rely on a single mechanism-either surface emissivity modulation or thermal conduction blocking-which limits their capacity to deliver durable and stable performance. Herein, a novel vanadium dioxide (VO 2 )/aramid nanofiber (ANF)/polyvinyl alcohol (PVA) aerogel composite was successfully fabricated through a vacuum filtration and freeze-drying process. In this system, ANF and PVA form a robust support framework with exceptional mechanical properties, while VO 2 nanoparticles provide dynamic thermal camouflage properties. The resulting VO 2 /ANF/PVA aerogel exhibited a low density of 0.052 ± 0.002 g/cm 3 , minimal shrinkage rate of 3.5 ± 0.2 %, high porosity of 96.5 ± 0.3 %, substantial compressive stress (0.169 ± 0.001 MPa at 75 % strain), and extremely low thermal conductivity of 0.048 ± 0.003 W/(m·K). Notably, the aerogel demonstrated significant infrared emissivity modulation (from 0.92 to 0.6) across a temperature range of 15–100 °C. As a thermal camouflage coating, it reduced the radiative temperature of a 70 °C object to 17.9 °C while maintaining stable performance for over 2000 s. This study achieved synergistic optimization of material structure and functionality through design of composite structures, offering valuable insights for developing advanced adaptive stealth materials.
研究领域:
材料科学
·
纳米复合材料
·
热功能材料
·
智能响应材料
·
红外探测对抗
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高分子材料
·
先进涂层技术
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高影响因子
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-9
·
IF 5.228
Cao Ziyi,Xiao Xiudi,Lu Xuanming,Zhan Yongjun,Cheng Haoliang,Xu Gang
In this approach, the VO 2 nanoparticles have been successfully fabricated via combusting the low-cost precursor solution consisted of NH 4 VO 3 , C 2 H 6 O 2 and C 2 H 5 OH. By the XRD, TEM and XPS analysis, it can be found that the synthetic monoclinic VO 2 is single crystal and no impurity is defined. After dispersing the VO 2 nanoparticles into the polymer, the solar modulation of VO 2 -based composite film is up to 12.5% with luminous transmission and haze around 62.2% and 0.5%, respectively. In other words, the composite films show high performance of thermochromic properties. This could open an efficient way to fabricate low-cost and large-scale VO 2 (M) nanoparticles and thermochromic films.
研究领域:
材料科学
·
纳米技术
·
能源材料
·
智能涂层
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高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Bin Xiao,Bao Zhang,Jun-chao Zheng,Lin-bo Tang,Chang-sheng An,Zhen-jiang He,Hui Tong,Wan-jing Yu
VO 2 is considered as a promising anode material for lithium ion batteries , owing to its high theoretical capacity and fast ion-transfer rate. However, the development of VO 2 is hindered by the severe issues of poor electrical conductivity , large volume changes and low energy density . In this study, nano-micro structure VO 2 /CNTs spheres are well designed and successfully synthesized through a one-step solvothermal method, where the carbon nanotubes are inlayed throughout the whole microspheres . This unique structure enables carbon nanotubes to improve the ion and electron conductivity of VO 2 . Besides, it can achieve a high tap density (> 1.3 g cm 3 ) of VO 2 /CNTs electrode, which is higher than nanomaterials (< 1.0 g cm 3 ), and compatible with the current commercial anode materials. The Li + storage behavior of VO 2 /CNTs is studied systematically in the potential range 0.01–3.0 V, it can obtain a high reversible specific capacity of 537.6 mA h g −1 at the current density of 0.05 A g −1 . Furthermore, the lithium insertion/extraction reaction mechanism of nano-micro structure VO 2 /CNTs is clarified. The results demonstrate that the nano-micro structure relieves the volume changes during charge/discharge cycling. Therefore, it provides an insight to create functional materials with nano-micro structure for a wide range application.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米技术
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yining Ma,Dandan Zhu,Huaijuan Zhou,Yue Tang,Chenchen Hu,Xinyu Meng,Xiaodong Jin,Tongxiang Xu,Xun Cao
Vanadium dioxide (VO 2 ) material has been deemed as a potential anode candidate for aqueous lithium-ion batteries. Among its diversified polymorphs, the latest discovered VO 2 (D) receives the fewest reports on its application in energy storage. Herein, we successfully utilized a template-free solvothermal method to prepare VO 2 (D) submicron-spherical hierarchical structures, constructed with colibacillus-like nanorods . The VO 2 (D) submicron-spheres were applied as an active anode material into the aqueous lithium-ion battery, which exhibited suitable working potential. Furthermore, VO 2 (D)-based full cell with LiMn 2 O 4 as the cathode demonstrated high discharge capacity, good rate capability, and excellent cycling stability. The structural evolution, valence states of the VO 2 (D) electrode, and impedance variation of the full cell during cycling were investigated. The work reveals the potential of VO 2 (D) as a novel anode material for aqueous lithium-ion batteries.
研究领域:
材料科学
·
能源存储
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