ACS Applied Electronic Materials
·
2021
·
IF 3.314
Nan Shen,Shi Chen,Run Shi,Shuzhang Niu,Abbas Amini,Chun Cheng
The critical challenge for the practical applications of VO2-based smart windows is to nucleate and propagate the phase transformation in the ambient condition while maintaining a balance between solar energy regulation and visible light transmittance. Doping proves effective in the modification of the thermochromic performance in VO2 but always causes unfavorable degradation accompanied with the significant reduction of phase transition temperature. Joule heating has been introduced in VO2-based devices to activate the metal–insulator transition (MIT) at ambient temperature. A synergy between these two strategies is necessary to achieve a well-balanced performance of VO2 films at the appropriate temperature. Here, we systematically investigate the thermochromic properties of tungsten (W)-doped VO2 composite films with Joule heating triggered MIT. The phase transition temperature of VO2 is effectively decreased by 21.6 °C per at. % W, and the balanced luminous transmittance (Tlum = 50.8%) and solar energy modulation ability (ΔTsol = 11.4%) are achieved at 0.6 at. % W doping. Importantly, as a synergetic result of W doping and hysteresis behavior of MIT in VO2, the optimal infrared blocking performance can be retained at a reduced cost of energy consumption and at the ambient temperature down to 47 °C. This is comparable to the glass window temperature in the summer in subtropical and tropical regions. This result suggests quite low and even zero energy consumption to maintain the optimal infrared blocking performance of VO2 films. This study provides a practical and advanced setup for operable and efficient smart windows in ambient conditions.
研究领域:
材料科学
·
纳米技术
·
光学
·
热致变色材料
·
能源效率
·
固体物理
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Changqing Yuan,Xiaorong Meng,Han Shen,HaoHao Wei
To address the shortcomings of VO 2 (B) when utilized as cathode materials for aqueous zinc ion batteries (AZIB), this study prepared a fluorine and manganese co-doped VO 2 (B) with a nanorod-like structure, formed from convoluted multilayered nanosheets, was synthesized via a solvothermal method. It was established that F and Mn doping effectively broadens the lattice structure and tunneling space of VO 2 (B) and induces lattice distortion of VO 2 (B) through the high electronegativity of F element, leading to the ductile growth of FMVO into a nanorod-like structure made of multilayered ultrathin nanosheets curled. The increased tunneling space and active sites of FMVO, compared to pure VO 2 (B), significantly enhanced the de-embedding rate of Zn 2+ and reduced diffusion resistance. The specific capacity of F 0.06 M 0.02 VO is 523.92 mAh/g (0.2 A/g) with 88.64 % capacity retention after 2,000 cycles (5 A/g). This research provides a novel approach to the development of cathode materials for AZIB.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2020
·
IF 6.984
H. Guo,Y.G. Wang,H.R. Fu,Aditya Jain,F.G. Chen
ZrW 2 O 8 with excellent negative thermal expansion coefficient and anti-reflective property, was successfully introduced onto VO 2 thermochromic films. With an increase in temperature, thermal expansion mismatch appears at the interface between VO 2 and ZrW 2 O 8 layers, and the concave-shaped structures are formed to collect more light. Additionally, ZrW 2 O 8 serves as an anti-reflective coating, which results in a significant enhancement in luminous transmittance . The luminous transmittance of VO 2 /ZrW 2 O 8 and ZrW 2 O 8 /VO 2 /ZrW 2 O 8 films is 71.9% and 75.7%, respectively, which have shown significant improvement compared to 39.8% for intrinsic VO 2 film. In addition, the solar modulation value of VO 2 /ZrW 2 O 8 and ZrW 2 O 8 /VO 2 /ZrW 2 O 8 films have also been improved compared to VO 2 film, and the obtained value for bi-layer film is higher than that of tri-layer film. The results obtained for VO 2 /ZrW 2 O 8 and ZrW 2 O 8 /VO 2 /ZrW 2 O 8 films have shown a remarkable improvement over other bi-layer or tri-layer structures. The described VO 2 /ZrW 2 O 8 and ZrW 2 O 8 /VO 2 /ZrW 2 O 8 films with enhanced luminous transmittance and solar modulation make them promising materials for the application in smart windows .
研究领域:
材料科学
·
光学
·
热致变色材料
·
智能窗户
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Ying Sha,Jianshu Wang,Chaoxuan Wang,Zeqi Liu,Hao Wang,Lei Qian
VO2 has emerged as a promising cathode material for aqueous zinc-ion batteries, attributed to its unique one-dimensional tunnel structure and reversible Zn2+ de/intercalation. However, its practical application is hindered by intrinsically poor conductivity, slow ion diffusion and structural instability during long-term cycling. In this study, we introduce a novel dual-ion synergy strategy by co-doping NH4+ and F− to systematically address these challenges. The combined effects of NH4+-induced lattice expansion and F−-mediated electronic modulation significantly enhance the electrochemical performance of VO2·xH2O (VONF-0.4). Specifically, NH4+ increases the tunnel spacing for facile Zn2+ diffusion and stabilizes the V–O framework via the “pillar” effect and hydrogen bonding, while the partial substitution of O2− with F− enhances conductivity and suppresses vanadium dissolution by forming a hydrophobic interface. The optimized VONF-0.4 cathode delivers satisfactory rate capability and a high initial specific capacity of 415.4 mAh g−1 at 1.0 A g−1, which can be maintained at 371.1 mAh g−1 after 300 cycles. Notably, it shows outstanding long-term stability and retains 99.4% of its initial capacity after 1400 cycles at 10 A g−1. This work demonstrates the feasibility of dual-ion engineering in designing advanced cathode materials for high-performance aqueous zinc-ion batteries.
研究领域:
材料科学
·
电化学
·
储能
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2025
·Vol. 15
·期 9
·1045
·
IF 2.8
Lingfeng Jiang,Yifei Chen,Haiyan Liu,Haoning Zhang,Li Zhao
Vanadium dioxide (VO2) has become one of the most promising smart temperature-controlled thin-film materials due to its reversible phase transition between a metallic and an insulating state at approximately 68 °C, accompanied by negligible volume change and excellent optical modulation properties. However, the practical application of VO2is still limited by its relatively high phase transition temperature and susceptibility to oxidation. To address these two major shortcomings, this study employed a one-step hydrothermal method to prepare a VO2nanopowder, followed by a chemical precipitation method to form a VO2@AlF3core–shell structure. The coated nanoparticles were then dispersed in a PVP ethanol solution, coated onto a glass substrate, and evaluated for performance. The experimental results indicate that when the molar ratio of VO2to AlF3reached 1:1, the phase transition temperature of VO2@AlF3was effectively reduced to 50.3 °C, significantly lower than the original temperature of 68 °C. Additionally, the material exhibited favorable optical properties, with a solar modulation ability (ΔTsol) of 17.2% and a luminous transmittance (Tlum) of 36.3%. After calcination in air at 300 °C for 3–6 h, the VO2core remained oxidation-resistant and maintained excellent phase-change thermal insulation properties.
研究领域:
材料科学
·
纳米技术
·
智能涂层
·
功能材料
·
隔热材料
✓ 已验证
产品关联
DOI
高影响因子
Defence Technology
·
2025
·
IF 5.9
Yingke Chang,Pengtao Cheng,Zhe Kong,Jianxin Nie,Wei Ren,Xiaohui Liang,Enyi Chu,Qingjie Jiao,Jianjun Luo
Initiating explosive devices (IEDs) are crucial in both military and civilian applications for improving the accuracy of controlled detonations. However, the safety of semiconductor bridge (SCB) wire IEDs, which are the most widely used, is increasingly threatened by complex electromagnetic environments. Although protective devices such as thermistors and zener diodes are commonly employed to enhance safety, traditional discrete components can compromise compactness and provide only marginal improvements. The metal-insulator transition properties of vanadium dioxide (VO 2 ) present an innovative approach to enhancing the safety performance of IEDs. Nevertheless, the functional relevance of the VO 2 phase transition in relation to IEDs has garnered limited scientific attention. The VO 2 film fabricated via 3D printing demonstrated resistivity modulation ranging from 2 to 5 orders of magnitude, achieving a stable metallic-state resistance of 1.2 Ω. The results show that this process increases the 5-minute safe current threshold by 90%, from 1 A to 1.9 A, and reduces the temperature generated by the current by approximately 40% when below the safe current threshold. Integrating VO 2 film into IEDs via semiconductor processes significantly enhances safety performance while maintaining detonation capability, demonstrating its effectiveness as a safety modulator in pyrotechnic engineering.
研究领域:
材料科学
·
电气工程
·
增材制造
·
固体物理
·
烟火技术
·
安全工程
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2021
·
IF 6.986
Jinna Guo,Mingsen Xie,Peiyao Du,Yu Liu,Xiaoquan Lu
Luminol, as a classical luminophore, plays a crucial role in electrochemiluminescence (ECL). However, the traditional luminol–H2O2 ECL system suffers from the self-decomposition of H2O2 at ambient temperature, which hinders its further application in quantitative analysis. In this work, for the first time, we developed atomically gold-supported two-dimensional VO2 nanobelts (Au/VO2) as an advanced co-reaction promoter to speed up the reduction of dissolved oxygen to superoxide radicals (O2•–), which react with the luminol anion radical and greatly promote the ECL emission. The ECL resonance energy transfer (ECL-RET) between the hollow manganese dioxide nanospheres and luminol results in a conspicuously decreased ECL signal response, and in the presence of glutathione (GSH), effective redox reaction between manganese dioxide and GSH restores the ECL signal. As a consequence, the designed sensor based on ECL-RET-assisted Au/VO2 signal amplification showed outstanding performance for “signal-on” detection of GSH in the concentration range of 10–3 to 10–10 M, and the detection limit was as low as 0.03 nM. The ECL sensor displayed excellent specificity and was successfully utilized to target GSH in real human serum samples. Importantly, this work not only highlights a powerful avenue for constructing an ultrasensitive ECL sensor for GSH but also provides some inspiration for the further design of high-performance co-reaction accelerators using the ECL technique.
研究领域:
分析化学
·
生物传感
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 2
·1-10
·
IF 5.3
Ke Wenrui,Kuang Guochen,Gu Chuangqi,Wang Junhao,Jiang Xiao,Zhu Rongjiao,Wang Haiyuan,Zhang Zhen
A Cr-doped VO 2 nanobelt (Cr/VO 2 ) with remarkable peroxidase-like activity was synthesized and coupled with uricase to catalyze the cascade reaction for detection of uric acid. Notably, the affinity of Cr/VO 2 for 3,3',5,5'-tetramethylbenzidine dihydrochloride hydrate (TMB) and hydrogen peroxide (H 2 O 2 ) is tenfold and 20-fold higher, respectively, than that of horseradish peroxidase (HRP). The Cr/VO 2 exhibits highly reactive and stable peroxidase activity at temperatures of 20-60 ℃. Thus, the reaction catalyzed by Cr/VO 2 can be carried out at room temperature, greatly simplifying the testing process. This enzyme cascade nanozyme based colorimetric assay enables the selective and simple detection of uric acid within 30 min with a detection limit of only 0.34 μM, and has an observable potential in clinical applications. Graphical abstract
研究领域:
生物化学
·
医学诊断
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy & Environmental Science
·
2012
·Vol. 5
·期 3
·6104-6110
·
IF 9.61
Yanfeng Gao,Shaobo Wang,Hongjie Luo,Lei Dai,Chuanxiang Cao,Yiliao Liu,Zhang Chen,Minoru Kanehira
Vanadium dioxide is a key material for thermochromic smart windows that can respond to environmental temperature and modulate near infrared irradiation by changing from a transparent state at low temperature to a more reflective state at high temperature, while maintaining visible transmittance. VO2 thermochromism is commonly used in films on glass that function as smart windows. Flexible VO2 nanocomposite foils are able to combine the intrinsic properties of VO2 nanoparticles with the added functionalities contributed by nanoscale and interface effects, such as increased visible transparency and infrared modulation ability. These foils are promising for applications in construction and automotive glasses to increase energy efficiency. However, VO2 nanoparticles may be unstable, and they are difficult to prepare in stable dispersive suspensions. In this paper, we report a novel all-solution process that can be used to prepare transparent, stable and flexible VO2-based composite films. These films exhibit UV-shielding properties and an excellent temperature-responsive thermochromism in the near infrared region. A typical film has a solar modulation efficiency of 13.6%, which is the highest value for VO2 thermochromic films with comparable visible transmittance. Coating the VO2 nanoparticles with a thin SiO2 shell significantly improved their anti-oxidation and anti-acid abilities. This result represents an important breakthrough in VO2 thermochromism, and it may have applications for near infrared modulation of glass used in construction or cars.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Saheed Abiola Raheem,Hangjia Shen,Ali Saad,Haichuan Guo,Tiju Thomas,Minghui Yang
There is a clear need to develop efficient and stable electrocatalysts for hydrogen evolution reaction (HER) that do not rely on noble metals. Transition metal nitrides are emerging as good substitutes for HER electrocatalysts because of their distinctive electronic properties and availability. Furthermore, forming suitable heterojunctions can improve their activities further. Here, a nitridation treatment, followed by a solvothermal method is used to synthesize Mo 3 N 2 /VO 2 composites for obtaining outstanding HER electrocatalysts that operate in an acidic solution. The introduction of VO 2 enhances the electronic conductivity and the active sites of Mo 3 N 2 /VO 2 . More so, the synergy between the interface of Mo 3 N 2 and VO 2 facilitates electron transfer and speeds up reaction kinetics. When investigated for HER, the best Mo 3 N 2 /VO 2 catalyst displays remarkable catalytic activity with an overpotential of 166 mV and a rather small Tafel slope of 43 mV dec −1 in 0.5 M H 2 SO 4 at a current density of 10 mA cm −2 . As prepared Mo 3 N 2 /VO 2 exhibits excellent stability in acidic solution over 12 h. This work opens up the possibility associated with molybdenum nitride-based electrocatalysts.
研究领域:
材料科学
·
电化学
·
能源催化
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Mingyu Li,Shujuan Tan,Haochen Qu,Jieyuan Huang,Shunwen Zheng,Tong Xu,Guangbin Ji
The relentless evolution and enhancement of modern infrared reconnaissance technologies have underscored the necessity for adaptive smart infrared material. Vanadium dioxide (VO 2 ) is a promising candidate due to its metal-insulator transition (MIT), but the fundamental relationship between its nanostructured morphology and its infrared emissivity tuning capability remains unclear. This study aims to establish a clear morphology-performance relationship and uncovering the underlying mechanisms. We proposed a growth mechanism to tune the crystallographic orientation by controlling the precursor solution and hydrothermal process, and successfully synthesized VO 2 nanoparticles with various morphologies (flower-like, spherical-like, rod-like and plate-like). It is found that the room-temperature infrared emissivity (ε) of the plate-like VO 2 exhibited the lowest ε due to the modulation of the dielectric function. Crucially, plate-like VO 2 demonstrated the highest thermochromic infrared emissivity modulation amplitude (Δε = 0.248) during the metal-insulator transition (20–100 °C), which is attributed to a synergistic multi-machine interaction response of the interaction between the carrier concentration and the interfacial effect. These findings deepen the fundamental understanding of the infrared emissivity properties of VO 2 with respect to its morphology and provide a theoretical basis for adaptive infrared stealth.
研究领域:
材料科学
·
智能材料
·
红外技术
·
纳米材料
·
热隐身
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiaoqing Liu,Peixing Qian,Ze Xu,Lixin Zhang,Chuang Yu
Vanadium dioxide (VO 2 ) cathode with specific tunnel structure and favorable specific capacity is critical for developing aqueous zinc-ion batteries (AZIBs) with excellent electrochemical performance. However, sluggish electrochemical kinetics hampered its development in burgeoning energy storage devices. Herein, we tailored VO 2 material with different exposed crystal planes and employed as cathodes for AZIBs. The comprehensive analyses indicate the exposed (2 0 1) and (0 0 1) crystal planes are favorable for fast electrochemical kinetics, high capacitance storage, and the smallest diffusion energy barrier, which guarantee electrodes with high discharge capacity (367 mA h/g at 0.1 A/g), excellent rate capability (281 mA h/g at 4 A/g) and cycling stability over 800 cycles. Besides, Ex-situ characterizations manifest VO 2 cathode with specific exposed crystal planes easily transformed to Zn 3+x (OH) 2 V 2 O 7 ·2H 2 O in the first discharge process, hence allowing continuous embedding of Zn 2+ in this layered structure, and the ex-situ scanning electron microscopy (SEM) analysis confirms the morphology change matched well with the structural transformation. This study may enlighten and promote the role of exposed crystal plane to develop high-performance rechargeable batteries.
研究领域:
材料科学
·
电化学
✓ 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）