CARBON
·
2025
·
IF 11.6
Chunting Li,Zhaoqing Lu,Fengfeng Jia,Pengbo Yang,Tao Huang,Ruixue Pang,Mingyuan Xu,Jingfeng Chen,Li Hua
Intelligent electromagnetic interference (EMI) shielding materials with dynamically adjustable performance are highly desirable for applications in complex electromagnetic environments, especially in the 5G era. However, achieving a synergistic integration of stimulus-responsive mechanisms and practical activation methods remains challenging. Herein, a hybrid paper composed of carbon fibers coated with vanadium dioxide (CF@VO 2 ) was fabricated via hydrothermal synthesis and paper wet-papermaking processes, using PMIA as a matrix. Leveraging the reversible metal-insulator transition (MIT) of VO 2 at ∼64.7 °C, the CF@VO 2 paper exhibits efficient electric heating capability of rapidly heating to 120 °C at a voltage of 12 V within 100 s, enabling tunable electrical conductivity between ∼311 and ∼509 S/m and reversible total EMI shielding effectiveness (SE T ) between ∼23 and ∼33 dB in X band. The temperature-driven MIT realized by electric-heating changes the conductivity and current transport path of CF@VO 2 papers, leading to stronger conductive loss and interfacial polarization loss of the heterointerface formed by the CF coated with tetragonal phase VO 2 heterostructure (CF@VO 2 (R)), exhibiting a variable electromagnetic shielding effectiveness range of ∼10 dB and conductivity range of ∼198 S/m. This work demonstrates a feasible strategy for designing intelligent EMI shielding materials with promising applications in adaptive signal regulation and advanced electronic packaging.
研究领域:
材料科学
·
电磁功能材料
·
智能响应材料
·
电子封装
·
纳米复合材料
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Meinan Wan,Mo Xiong,Neng Li,Baoshun Liu,Shuo Wang,Wai-Yim Ching,Xiujian Zhao
Research on monoclinic (M1) phase of VO 2 has attracted a great of interest for smart coating applications due to its exceptional thermochromic property. Herein, we report the results using a novel approach to synthesize N-doped VO 2 (M1) thin films with high purity by heat treatment in NH 3 atmosphere. The N dopant in the film can be regulated by varying NH 3 concentration during the annealing process. We find that the N atoms are located at the interstitial sites or substitute oxygen atoms, and the V-N bonds in the VO 2 thin films increase with NH 3 concentration. The metal to insulator transition (MIT) temperature ( τ c,h ) of the VO 2 thin film is effectively reduced from 80.0 to 62.9 °C, while the solar modulation efficiency (Δ T sol ) and the modulation efficiency at 2000 nm (Δ T 2000nm ) are 7.36% and 55.6% respectively. The band gap of N-doped VO 2 thin films related to MIT ( E g 1 ) is estimated to be as low as 0.18–0.25 eV whereas the band gap associated with the visible transparency ( E g 2 ) is about 1.50–1.58 eV. Based on the highly accurate first-principles calculations, the E g 1 of VO 2 (M1) is reduced after substituted or interstitial N-doping, while the E g 2 alters with the mode of N-doping, which is excellent agreement with experimental measurement.
研究领域:
材料科学
·
物理化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 38
·32176-32182
·
IF 3.289
Fan Yang,Xingfeng Shi,Zhang Chen,Dongyun Ma,Yupeng Wu,Hongjie Luo,Yanfeng Gao
Thermochromic (TC) and electrochromic (EC) smart windows are the mostly studied categories of smart window, but they usually work in different wavebands, and each have their own advantages. This work offers a method to combine the advantages of TC and EC smart windows by synthesizing TC–EC dual-response TiO2–VO2 nanocomposite films. These films were prepared by dispersing VO2 nanoparticles (NPs) in TiO2 sols and then underwent annealing. The optimized film showed a luminous transmittance (Tlum) of 66.1% at 20 °C, 59.3% at 90 °C and a ΔTsol of 11.2%. By applying a voltage of −5 V, the film showed an EC transmittance modulation (ΔT) of 19.1% at 630 nm, a combined performance of Tlum = 44.7% and ΔTsol = 17.1% (increased by 52%). The color of the films could also be modified from a yellowish brown to a light blue, which is meaningful for practical usage. The current TiO2–VO2 nanocomposite film combines TC and EC performance, which may be an important breakthrough in energy saving smart windows.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Nanoscale
·
2013
·Vol. 5
·期 19
·9208-9213
·
IF 6.233
Yijie Zhou,Aibin Huang,Yamei Li,Shidong Ji,Yanfeng Gao,Ping Jin
Transition-metal oxide nanocrystals are novel candidates for being used as the hosts of localized surface plasmon resonance because they exhibit fascinating properties arising from the unique characteristics of their outer-d valence electrons. VO2(M) nanocrystal is well-known due to its reversible metal-insulator transition (MIT) temperature near room temperature (∼68 °C) corresponding to the appearance/disappearance of localized surface plasmon resonance across the MIT. In this study, a microemulsion-based method was introduced to synthesize VO2(M)@SiO2 nanoparticles which were applied to prepare VO2-based thermochromic foils owing to a strong and tunable surface plasmon resonance in the metallic state. The optical transmittance spectra demonstrates that the employment of surface plasmon resonance in VO2-based thermochromic foils greatly improves their solar regulating efficiency up to 18.54%, and provides an unprecedented insight in optimizing VO2-based thermochromic windows for solar control.
研究领域:
材料科学
·
纳米技术
·
光学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2013
·
IF 5.008
Shaotang Li,Yamei Li,Meng Jiang,Shidong Ji,Hongjie Luo,Yanfeng Gao,Ping Jin
Nanofibers of VO2(A) with the diameter and length averagely at 100 nm and 10–20 μm were prepared via a facile one-step hydrothermal method by reducing NH4VO3 with 1,3-propylene glycol in an acidic solution. The obtained VO2(A) was coated by SiO2 to form VO2(A)@SiO2 core–shell nanocomposites, which were then transformed into VO2(M)@SiO2 by annealing under nitrogen atmosphere. The resulted composites maintained the original fibrous morphology, particularly with a large amount of pores emerging inside the fiber due to the volume shrinkage during the phase transition, which may improve its thermal insulation ability in real applications. The VO2(M)@SiO2 nanofibers were arranged into a self-supporting film by filtration, which shows excellent thermochromic properties.
研究领域:
材料科学
·
纳米技术
·
智能材料
·
热致变色
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2017
·Vol. 4
·期 5
·1095-1100
·
IF 4.136
Guangdi Nie,Xiaofeng Lu,Yun Zhu,Maoqiang Chi,Mu Gao,Sihui Chen,Ce Wang
Graphical Belt and braces : Inorganic/organic VO 2 @PANi coaxial nanobelts are prepared for the first time by using a simple and facile reactive template strategy without the assistance of any surfactant for high-performance supercapacitor electrodes in neutral electrolyte. Conducting polyaniline (PANi) is deposited in situ as a homogeneous shell on the monocrystalline VO 2 nanobelts by using a simple and facile reactive template strategy without the assistance of any surfactant for supercapacitor electrodes. The as-prepared VO 2 @PANi coaxial heterostructures show larger specific capacitance, better rate capability than the bare VO 2 nanobelts, and higher cycling stability than the HCl-doped PANi nanofibers in neutral electrolyte, owing to the synergetic contributions of the unique configuration and composition. These intriguing results can be extended to the synthesis of core/yolk-shell or hollow inorganic/organic functional nanostructures with various shapes by tuning the pH or reaction time, which have potential applications in energy storage, optoelectronic devices, environmental governance, and catalysis.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shiwen Wang,Chuanzhen Ma,Junwei Ding,Kang Zhao,Heng Wang,Hewei Luo,Shide Wu,Shaoming Fang
VO 2 (B) has attracted tremendous attention as a cathode for aqueous zinc-ion batteries (AZIBs), but its low intrinsic electronic conductivity and uncontrolled vanadium dissolution hinder further practical applications. Herein, Zn 0.03 VO 2 , with guest zinc ions preinserted into the tunnel sites, is demonstrated to enhance the conductivity and cyclability of VO 2 (B). The tailored structure, featuring a modulated electronic configuration, offers enlarged ion diffusion tunnels, improved electronic conductivity, and enhanced electrochemical activity, thereby facilitating the reversible de-intercalation of Zn 2+ /H + ions, as confirmed by both experimental results and theoretical calculations. Notably, vanadium dissolution is significantly suppressed due to the chemical pre-insertion of guest zinc, which weakens the interaction between Zn 2+ and host lattice, as well as the homologous ion effect. As a result, Zn 0.03 VO 2 cathode delivers a high capacity of 358 mAh g −1 , particularly at low current density of 0.1 A g −1 , with 85% capacity retention after 300 cycles, excellent rate capability of 175 mAh g −1 at 5 A g −1 , and long cycling stability over 2000 cycles at 20 A g −1 . Moreover, a pseudocapacitive-dominated Zn 2+ /H + co-insertion mechanism is conclusively identified through electrochemical and spectroscopic analyses. This work provides valuable insights into ion-preinserted structural modulation of vanadium oxides for the development of high-performance AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
功能材料
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Xiaoyan Xiang,Jincheng Liu,Bingjie Li,Wenxin Yang,Zewei Liao,Wei Cai,Yijun Luo,Yanxiong Fang
The selective oxidation of inert C H bonds via sustainable photocatalytic methods represents a critical advancement in green chemistry. This research develops VO 2 -Ag nanocomposites for the selective photocatalytic oxidation of cyclohexane to KA oil (cyclohexanol/cyclohexanone) under mild conditions, addressing the inefficiency, high energy consumption, and over-oxidation of conventional methods. Oxygen-deficient VO 2 nanorods were synthesized solvothermally, followed by in situ photoreduction to deposit uniformly dispersed silver nanoparticles (Ag NPs) with the diameter of 6∼8 nm onto the VO₂ nanorod surface with the length of 500∼600 nm. The VO 2 -Ag synergy integrates three key features: (1) VO 2 oxygen vacancies modulating reactant adsorption, (2) Ag NP localized surface plasmon resonance (LSPR) enhancing visible-light absorption, and (3) a Schottky heterojunction promoting charge separation. The optimized VO 2 -Ag 40 composite achieved 9.17 % cyclohexane conversion and 95.04 % KA oil selectivity under visible light in 12 h, significantly outperforming pure VO 2 . Mechanistic studies identified h + , ·O 2 − , and ·OH as key active species. Enhanced activity stems from LSPR-broadened light absorption, Schottky-minimized charge recombination, and vacancy-optimized intermediate adsorption. This work highlights the potential of interfacial engineering and defect modulation in designing high-performance photocatalysts for sustainable hydrocarbon valorization, offering a scalable strategy for green chemical synthesis.
研究领域:
环境化学
·
材料科学
·
催化
·
纳米技术
·
有机化学
·
绿色与可持续化学
✓ 已验证
产品关联
DOI
高影响因子
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.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RENEWABLE ENERGY
·
2026
·
IF 9.1
Jiamin Yan,Penglei Li,Yang Liu,Runze Shi,Xuan Jin,Zhen Lu,Haifeng Wu,Gongxun Bai,Peng Xue,Jinxin Guo
Thermochromic smart windows based on vanadium dioxide (VO 2 ) offer a promising passive approach for reducing building solar heat gain by selectively modulating near-infrared radiation. However, their large-scale application is limited by complex fabrication processes and nanoparticle agglomeration. Herein, a scalable room-temperature ultraviolet (UV) photocuring strategy is developed to fabricate W–VO 2 thermochromic films. By introducing an A-DCP monomer, rapid UV-induced polymerization forms a dense three-dimensional crosslinked network within seconds, enabling effective in-situ confinement and suppressing nanoparticle migration and aggregation. Structural and spectral analyses confirm the preserved VO 2 (M) phase and improved microstructural uniformity. At the optimal W–VO 2 content of 1.0 wt%, this film achieved a high ΔT sol of 15.04% while maintaining a T lum of approximately 35%, and exhibited excellent color stability during the thermochromic conversion process. Furthermore, an application-oriented multi-scale evaluation framework is established to correlate microstructure, optical modulation, visual perception, and building-scale energy performance. Scaled building-model experiments under 680 W m −2 irradiation show a steady-state indoor temperature reduction of 7.03 °C compared with clear glass. EnergyPlus simulations across nine climate zones demonstrate significant annual energy-saving potential, reaching 24.13% in Vancouver and 23.59% in Riyadh.
✓ 已验证
DOI
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
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Lei Hu,Yue Du,Li Gao,Mengting Di,Ning Zhang,Yu Pan,Xiaoming Yan,Baigang An,Gaohong He
Nanoscale solid superacid SO42–/ZrO2/WO3 is coupled into imidazole-hydroxyl-quaternary ammonium co-functionalized polybenzimidazole (PG112) to address the trade-off effect of membrane for large-scale flow battery application. Nanoscale SO42–/ZrO2/WO3 particles with high sulfonic groups are dispersed in membrane as redox-active ion barriers and proton carriers, which mitigate the electrolyte crossover and maintain high ion conductivity. The VO2+ permeability of the prepared membrane (7.86 × 10–10 cm2 s–1) is significantly lower than those of PG112 (3.93 × 10–9 cm2 s–1) and Nafion 212 (7.76 × 10–8 cm2 s–1) membranes. The vanadium flow battery with this membrane exhibits a longer self-discharge duration time of 231 h compared with Nafion 212 (35 h) and PG112 (88 h) membranes. High coulombic efficiencies of 97.5–99.2% at 40–120 mA cm–2 are obtained for the prepared membrane, which are higher than those for Nafion 212 (78.0–92.8%) and PG112 membranes (96.2–98.6%). Stable cycle performance and low retention capacity are also observed, suggesting the excellent chemical stability of the prepared membrane in vanadium flow battery operation. This work provides a prospective and applicable membrane to enhance the performance of flow battery.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）