EUROPEAN POLYMER JOURNAL
·
2019
·
IF 3.621
Yingying Li,Runan Gao,Jian Li
Energy saving materials are economically and environmentally beneficial as they effectively reduce energy consumption and greenhouse gas emissions. In this study, energy saving wood composite was prepared by injecting a methyl methacrylate dispersion containing a mixture of VO 2 (M)@SiO 2 core-shell nanocomposites and thermochromic microcapsules into wood templates. APTS was added to stabilize the suspension. The good compatibility between the injected substances and the wood template benefited from the PMMA and APTS that filled the cell lumen and bonded the substances, leading to energy saving wood composite with excellent dimensional stability, optical properties, and mechanical performance. More importantly, the energy saving wood composite exhibited outstanding temperature regulatory ability by shielding needless infrared radiation, resulting in thermal comfort. The unique properties of the energy saving wood composite could potentially be applied in building, furniture, thermal insulation, energy conversion, energy storage, and conservation.
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
SCIENCE OF THE TOTAL ENVIRONMENT
·
2018
·
IF 4.61
Jing Li,Ruoqi Wang,Zhen Su,Dandan Zhang,Heping Li,Youwei Yan
Nowadays, it is extremely urgent to search for efficient and effective catalysts for water purification due to the severe worldwide water-contamination crises. Here, 3D Fe@VO 2 core-shell mesh, a highly efficient catalyst toward removal of organic dyes with excellent recycling ability in the dark is designed and developed for the first time. This novel core-shell structure is actually 304 stainless steel mesh coated by VO 2 , fabricated by an electrophoretic deposition method. In such a core-shell structure, Fe as the core allows much easier separation from the water, endowing the catalyst with a flexible property for easy recycling, while VO 2 as the shell is highly efficient in degradation of organic dyes with the addition of H 2 O 2 . More intriguingly, the 3D Fe@VO 2 core-shell mesh exhibits favorable performance across a wide pH range. The 3D Fe@VO 2 core-shell mesh can decompose organic dyes both in a light-free condition and under visible irradiation. The possible catalytic oxidation mechanism of Fe@VO 2 /H 2 O 2 system is also proposed in this work. Considering its facile fabrication, remarkable catalytic efficiency across a wide pH range, and easy recycling characteristic, the 3D Fe@VO 2 core-shell mesh is a newly developed high-performance catalyst for addressing the universal water crises.
研究领域:
环境催化
·
材料科学
·
水处理
·
纳米材料
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Liangmiao Zhang,An Wang,Tianli Zhu,Zhang Chen,Yupeng Wu,Yanfeng Gao
Two types of transparent wood composites with anisotropic structure for energy-saving windows were successfully fabricated by infiltration of epoxy resin dispersion containing tungsten-doped vanadium dioxide nanoparticles (W-doped VO2 NPs) into the delignified wood template and subsequent polymerization. The well integration of the epoxy resin, W-doped VO2 NPs, and the pore-structured wood endowed the anisotropic composites with high visible transmittance (68.2% for the composite prepared from longitudinally cut trees (L-composite), 73.3% for the composite prepared from radically cut trees (R-composite)), obviously different mechanical performance (fracture stress of 74.57 MPa (L-composite) and 56.14 MPa (R-composite) and modulus of 1.47 GPa (L-composite) and 1.23 GPa (R-composite)), and low thermal conductivity (0.20 W·m–1 K–1 (L-composite) and 0.32 W·m–1 K–1 (R-composite)). Moreover, these two kinds of W/VO2 transparent wood composites both show an outstanding thermoregulation ability when they are used as windows. A significant amount of heat (from a simulated light source) was reflected by VO2 NPs, and as a result, the indoor temperature of a demo system had a significant slower temperature increase rate when compared with that for a similar system with a common glass panel applied. Novel transparent wood composites combining a low thermal conductivity wood template and thermochromic VO2 NPs provide a potential solution for replacement of heavy, high thermal conductivity, and infrared transparent glass but still meet indoor occupancy view perception.
研究领域:
材料科学
·
能源效率
·
纳米复合材料
·
智能窗户
·
可持续建筑材料
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2013
·Vol. 15
·期 41
·8330-8336
·
IF 3.879
Yamei Li,Shidong Ji,Yanfeng Gao,Hongjie Luo,Shaotang Li,Meng Jiang,Yijie Zhou,Rong Li,Bingbing Wang,Ping Jin
This paper presents a novel vapor–solid growth approach of stem-like 1D vanadium oxide nanostructures in a core-regenerated fashion on VO2@TiO2 core–shell rods under a very low temperature (400 °C). The composition and microstructure of the as-grown nanostructures were analyzed by HRTEM, EDS and XPS, confirming the vapor–solid mechanism. The confinement effect of the shell was analyzed by varying experimental parameters (coating thickness and heating rate), and the shell was found to play a critical role in generating and accumulating vapor with supersaturated concentration for the nanocrystal nucleation. Additionally, PVP was added as a surface modifier to favor the growth, probably by forming carbonaceous/nitrogen gaseous species as carrier media, as deduced by FTIR analysis. By exploring the impact of different heating rates, we found that the mass transfer process was facilitated only using a relatively high heating rate (>1.33 °C s−1). However, such a growth was still limited only within the early stages (~15 min), because the confined vacuum interface will disappear with the progress of the crystallization of the nanoporous anatase shell. A unique 1D rods to 2D nano-flakes evolution can be achieved by increasing the heating rate from 1.3 °C s−1 to over 8 °C s−1. These findings provide a valuable understanding on the thermodynamics and kinetics during an unique VS based nanocrystal growing process, and also showed a new method to obtain hierarchical heterogeneous nanostructures.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2020
·
IF 6.984
Shusheng Pan,Ziyue Rao,Yujie Wu,Zhiyu Liu,Jun Ge,Shan Zhang
In this study, a temperature self-regulating solar reactor based on VO 2 thermochromic coating is demonstrated. The temperature of solar reactor can be stabilized at 68.8 °C, which is corresponded to the critical point of metal-to-insulator transition of VO 2 . By employing the solar reactor, the orthorhombic phase CsPbI 3 microwires have been synthesized through solution phase reaction route. Strong emission peaks at 490 nm and 470 nm have been observed in CsPbI 3 microwires under ultraviolet and soft X-ray excitation, respectively. The high performance photodetector based on CsPbI 3 microwire show a detectivity of 1.09 × 10 14 Jones, responsivity of 4.72 A/W, rapid rise and decay time of 0.96 and 0.93 s at 325 nm. Our results demonstrate that the temperature self-regulating solar reactor can be applied for energy-saving solution phase reactor for synthesizing high quality inorganic materials.
研究领域:
材料科学
·
纳米光电子学
·
无机功能材料
·
能源材料
·
半导体器件
✓ 已验证
DOI
高影响因子
CARBON
·
2023
·
IF 10.9
Hanqi Qian,Wenhong Jiang,Xiangrong shi,Qingyuan Cao,Bo Jiang,Yudong Huang
Aerogel materials have shown tremendous vistas in electromagnetic interference (EMI) of intelligentized electronics and armaments. However, it is challenging to simultaneously achieve self-enhanced shielding performance and release the accumulation thermal. Herein, an intelligent tunable shielding composite was demonstrated through synergistic dynamic interactions between Ti 3 C 2 T x and tungsten doped VO 2 (WVO 2 ), tactfully transforming the accumulation thermal energy to superiority for enhanced shielding. Additionally, the performances of meticulously engineered Ti 3 C 2 T x -WVO 2 composite from thermal conversion to enhanced electromagnetic shielding have been hierarchically dissected. The composite possessed highly sensitive and dynamically tunable shielding performance (Δ SE = 13.9 dB, X-band = 8–12 GHz) and high-efficiency thermal management characteristic by virtue of three-dimensional porous Ti 3 C 2 T x skeleton, the phase transition of WVO 2 and energy transformation between Ti 3 C 2 T x and WVO 2 . Furthermore, the composite provides excellent shielding performance (EMI SE = 42.8 dB). Therefore, this Ti 3 C 2 T x -WVO 2 composite can be a potential candidate in both EMI shielding and tunable shielding fields.
研究领域:
材料科学
·
电磁屏蔽
·
热管理
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiaoqing Liu,Ze Xu,Jinjiang Wu,Kexin Wang,Chuang Yu
Vanadium dioxide (VO 2 ) materials exhibit significant theoretical specific capacity, which is ascribed to multi-electron transfer reactions and unique tunneled structures. However, the low electronic conductivity and sluggish reaction kinetics of VO 2 have impeded its further development. Hence, in this study, we employed a synergistic strategy of defect engineering and compositing with a calabash carbon matrix to reduce Zn 2+ diffusion barriers and accelerate electron transfer. The VO 2 cathode provided a high specific capacity at a low rate of 303 mA h g −1 at 0.1 A g −1 after 191 cycles, along with good rate performance (168 mA h g −1 at 10 A g −1 ) and satisfactory long-term stability (170 mA h g −1 at 1 A g −1 after 1100 cycles). The exhaustive structural analyses indicated that oxygen vacancies accelerated the Zn 2+ diffusion rate, while a uniform calabash-like hollow carbon matrix improved electronic conductivity during cycling. Moreover, ex-situ measurements demonstrated that during discharge, the composite cathode transformed to layered Zn 3+ x (OH) 2 V 2 O 7 ·2H 2 O, which then facilitated the subsequent intercalation of Zn 2+ . This cooperative strategy advances the practical application of aqueous zinc ion batteries by leveraging vanadium-based electrodes.
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
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Shuwen Zhao,Ying Tao,Yunxiang Chen,Yijie Zhou,Rong Li,Lingling Xie,Aibin Huang,Ping Jin,Shidong Ji
Vanadium dioxide is one kind of desirable infrared modulator for sensors because of its remarkable temperature-responsive infrared modulation ability via autogeneic metal–insulator transition. However, the detriments of poor chemical stability and narrow scope of extensive-researched application (e.g., smart windows) restrict its mass production. Here, we propose a VO2@MgF2@PDA inorganic–organic hybrid coated architecture for greatly enhancing the optical durability more than 13 times in contrast to pristine VO2 and the transmittance difference between room and high temperature changed within 20% (decreasing from 25 to 20.1%) at λ = 1200 nm after the ageing time of 1000 h at constant temperature (60 °C) and relative humidity (90%). Furthermore, based on the as-synthesized durability-enhanced nanoparticles, we fabricated a flexible sensor for temperature-field fluorescence imaging by integrating the VO2-based near-infrared modulator with the upconversion fluorescence material. Additionally, the formation mechanism of VO2@MgF2 core–shell nanoparticles was studied in detail. The inorganic–organic combination strategy paves a new way for improving the stability of nanoparticles, and the use of VO2-based flexible temperature-fluorescence sensors is a promising technique for remote and swift temperature-field distribution imaging on complicated and campulitropal surfaces.
研究领域:
材料科学
·
光学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yuan Feng,Changfan Guo,Lin Gui,Li Liang,Feng Liao,Wanxia Huang,Kuanguo Li,Guanglei Cui,Zewen Zuo
Integrating metal nanoparticles with vanadium dioxide (VO2) is an effective means to realize active plasmonic regulation which has great application potential in optical devices that respond in real-time to external stimuli. However, the high temperature necessary for VO2 growth severely reshapes the metal nanoparticles, causing reduced refractive index (RI) sensitivity and degraded modulation performance. Herein, we construct a large-area dynamically tunable plasmonic system composed of a VO2-covered array of hexagonal gold nanoplates (AuNPLs). By introducing a SiO2 interface layer, the thermal tolerance of the AuNPLs is effectively improved, making the high RI sensitivity (∼368.3 nm/RIU at 855 nm) survive the subsequent VO2 deposition. Through tuning the localized surface plasmon resonance (LSPR) of the AuNPL array and the thickness of the VO2 film, the LSPR-related transmission dip can be tailored to the near-infrared region where VO2 shows a large two-phase RI contrast, a dip shift up to 272 nm is therefore realized upon VO2 phase transition. Furthermore, electro-optic modulation is demonstrated through electrically triggered VO2 partial phase transition which is accompanied by a gradually changed effective dielectric permittivity, and a continuous shift of the transmission dip from 1070 to 860 nm is achieved by varying the applied electrical current flowing through the film. This work provides a feasible route for controllably constructing stimuli-response optical devices with large wavelength modulation amplitude.
研究领域:
光学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Dexin Meng,Xincheng Liang,Qian Liu,Xingfa Chen,Renshu Huang,Lin Peng,Huan Wen,Shibin Yin
The severe dendrite issue of the Zn anode greatly hinders the practical application of aqueous zinc-ion batteries, which demands a prompt solution. This work proposes an electrostripping strategy using sodium citrate (SC) solution as the electrolyte to fabricate a 3D honeycomb-like Zn (3DH-Zn) anode. Theoretical calculations and experimental results reveal that SC preferentially adsorbs on the Zn(100) and Zn(101) planes and exhibits a shielding effect, leading to the major dissolution of Zn atoms from the Zn(002) plane, thus obtaining a honeycomb-like structure. Notably, convinced by morphology characterization and finite element simulation results, Zn 2+ tends to deposit on the lateral sides of the hexagonal holes on the 3DH-Zn anode, resulting in a flat deposition morphology dominated by Zn(101)/Zn(100) planes, which significantly inhibits dendrite formation. As a result, the 3DH-Zn symmetric cell achieves an ultra-long lifespan of 2000 h at 5.0 mA cm −2 and 1.0 mAh cm −2 . Besides, the 3DH-Zn||VO 2 full cell works for 1000 cycles at 1.0 A g −1 with a residual capacity of 123.1 mAh g −1 . This work opens up a new horizon for applying electrostripping strategy in designing advanced Zn anode.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Guoshen Yang,Xianqi Xu,Gangrui Qu,Jie Deng,Yachao Zhu,Chi Fang,Olivier Fontaine,Pritesh Hiralal,Jiaxin Zheng,Hang Zhou
The earth-abundant magnesium resource and aqueous electrolyte make aqueous magnesium-ion batteries (AMIBs) a promising post-lithium-ion battery technology to synchronously address cost and safety concerns. Nonetheless, the freeze issue of aqueous electrolytes is curbing the development of AMIBs working at low-temperature conditions. Here, we report an MgCl 2 solution having a great low-temperature property via anion and concentration adjustment, which roots in the variation of the pristine hydrogen bond reticulation. Consequently, a 4 M MgCl 2 aqueous electrolyte endows a low freezing point (−62 °C) as well as ultra-high ionic conductivity (2.77 mS/cm at −50 °C). By using 4 M MgCl 2 as an electrolyte, the MnO 2 //VO 2 battery is capable of working in a wide temperature range from +25 to −50 °C, achieving a high discharge capacity of 97.9 mAh/g (0.1 A/g) and a high cycling capability of 1000 cycles (∼90 % capacity retention at −20 °C). Furthermore, MgCl 2 can be well compatible with polyacrylamide into an outstanding hydrogel electrolyte (in terms of mechanical property, anti-freeze performance, and high ionic conductivity) for a flexible quasi-solid-state MIBs application. The assembled flexible device attains appealing electrochemical properties across a broad temperature region, while the constructed pouch cell demonstrates superior flexibility and reliable safety. Our current exploration depicts an expeditious but productive paradigm for devising the high-performing AMIBs for low-temperature energy storage sectors.
研究领域:
电化学
·
材料科学
·
能量存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Han Shen,Xiaorong Meng,An Zhou,Zhifan Zhang,Pan Feng,Haigang Qin
This study employs a synergistic strategy combining La 3+ -doped modified VO 2 (B) (L x VO) with mesoporous hollow carbon spheres (MHCS) to prepare a high-capacity, highly stable MHCS-supported La-doped VO 2 (B) cathode material (HLVO). Optimizes the La 3+ doping ratio of L x VO and the MHCS content in HLVO, and the lattice expansion behavior of VO 2 (B) caused by La 3+ doping and the composite of carbon materials is clarified, which effectively contributes to the improvement of Zn 2+ diffusion kinetics rate and electrochemical performance of HLVO. The dynamic mechanism of LVO and HLVO is explained by density functional theory. The results show that the (110) interplanar spacing of 5 % La-doped L 0.05 VO increases to 0.355 nm. In the optimized H2L 0.05 VO, L 0.05 VO loose nanorods and MHCS are evenly distributed. The diffusion kinetic rate constant of Zn 2+ in HLVO is two orders of magnitude higher than that of VO 2 (B). At 1 A g −1 , the specific capacity of H2L 0.05 VO cathode remains at 403.5 mAh g −1 after 200 cycles, and the capacity retention rate is as high as 81.6 % after 10 A g −1 10000 cycles. The synergistic strategy of rare earth doping and carbon material composite provides a new idea for the development of high-performance aqueous zinc ion batteries (AZIBs) cathode materials.
✓ 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）