SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2020
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IF 6.984
Yongji Yao,Zhang Chen,Wei Wei,Pan Zhang,Yong Zhu,Qi Zhao,Kai Lv,Xiaopeng Liu,Yanfeng Gao
Inorganic-organic nanocomposites composed of nanoparticles and polymers offer a vast space for tuning material properties have attracted considerable interest. In this work, a nanocomposite composed of Cs 0.32 WO 3 (CWO) nanoparticles as functional additive and poly (methyl methacrylate) (PMMA) as matrix was developed for the application to energy-saving windows. The key to the process was in-situ polymerization of methyl methacrylate (MMA) monomers in the presence of CWO nanoparticles , which can effectively prevent the nanoparticles from agglomeration. As a result, a homogeneous dispersion of the nanoparticles in the PMMA matrix was obtained and the nanocomposite exhibits a high visible light transmittance (>70%), a low haze (<1%) and excellent near-infrared (NIR, 780–2600 nm) blocking ability (above 90%). Furthermore, the nanocomposite has a good stability in a high temperature/humid environment. The thermal stability and mechanical properties of the nanocomposite is remained comparable with PMMA. A model house was applied to evaluate the heat shielding performance of the nanocomposite, and the results indicate that the nanocomposite is superior to ITO glass. All of these results suggest that the proposed CWO/PMMA nanocomposite is promising for the application to energy saving windows.
研究领域:
材料科学
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能源技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Shuang Tao,Jingtian Han,Ying Xu,Zhenggang Fang,Yaru Ni,Liang Fang,Chunhua Lu,Zhongzi Xu
Energy consumption during cooling and heating poses a great threat to the development of society. Thermal regulation, as switchable cooling and heating in a single platform, is therefore urgently demanded. Herein, a switchable multifunctional device integrating heating, cooling, and latent energy storage was proposed for temperature regulation and window energy saving for buildings. A radiative cooling (RC) emitter, a phase-change (PC) membrane, and a solar-heating (SH) film were connected layer by layer to form a sandwich structure. The RC emitter exhibited selective infrared emission (emissivity in the atmospheric window: 0.81, emissivity outside the atmospheric window: 0.39) and a high solar reflectance (0.92). Meanwhile, the SH film had a high solar absorptivity (0.90). More importantly, both the RC emitter and the SH film displayed excellent wear resistance and UV resistance. The PC layer can control the temperature at a steady state under dynamic weather conditions, which could be verified by indoor and outdoor measurements. The thermal regulation performance of the multifunctional device was also verified by outdoor measurements. The temperature difference between the RC and SH models of the multifunctional device could reach up to 25 °C. The as-constructed switchable multifunctional device is a promising candidate for alleviating the cooling and heating energy consumption and realizing energy saving for windows.
研究领域:
材料科学
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能源工程
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建筑技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2024
·
IF 18.5
Bing Wu,Peiying Hu,Yanan Chen,Ling Liu,Xueyan Hu,Sijia Ge,Jin Wang
Aerogel energy-efficient glass can effectively reduce building energy consumption, but the low light transmission and weak mechanical properties greatly limit the application of aerogel in energy-efficient windows. Herein, a modified aramid nanofiber aerogel with outstanding mechanical strength (1.80 MPa, pull over 30000 times its weight), transparency (94.38% in the infrared region), and resistance to extreme environments (thermal insulation, frost resistance, flame retardancy, and self-extinguishing) is designed and synthesized using nanowire domain space structure strategy. The aerogel used for energy-efficient windows to reduce energy consumption in buildings is demonstrated. When the aerogel energy-efficient windows are applied in winter, the average temperature of the energy-efficient windows during the period from 10:00 a.m. to 4:00 p.m. is 4.01 and 7.01 °C higher than the ordinary glass house and the outdoor temperature, respectively. Carbon reduction calculations show that even in the coldest provinces of China, poly(terephthaloyl chloride-co-phenylenediamine-co-2-(4-Aminophenyl)-1H-benzimidazol-5-amine) (PTPA) aerogel for passive heating can reduce CO 2 emissions by 94.14 Kg m −2 per year. This study provides a new strategy for synthesizing transparent aramid aerogels and a new way to develop passive heating and warming energy-efficient windows for the next generation of energy-efficient and environmentally friendly buildings.
研究领域:
材料科学
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能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Hao Liang,Guang Yang,Meng Zhang,Daiqi Zhou,Fang Xia,Barbara E. Etschmann,Joël Brugger,Viktor Taktas,Yanfeng Gao
Windows are essential for advancing energy efficiency, yet fabricating window materials that simultaneously achieve high visible light transmission, exceptional and ultrabroadband near-infrared (NIR) shielding, neutral color appearance, excellent stability, and cost-effective, sustainable production remains a significant challenge. This study introduces ferrous ion-doped phosphosilicate glass (Fe 2+ -PSG), a material that meets all these criteria, establishing itself as a promising candidate for energy-efficient windows. Comprehensive characterization using Raman spectroscopy, synchrotron X-ray absorption near edge spectroscopy (XANES), UV–Vis-NIR transmission spectroscopy, and structural analysis reveals that the glass achieves superior visible light transmission performance (T lum = 84.1 ± 0.3 %) and a neutral color temperature of 6753 ± 45 K. These remarkable properties are primarily attributed to the formation of colorless ferrous [FeO 6 ] units, whose unique coordination environment is precisely controlled through phosphorus incorporation. Superior ultrabroadband NIR-shielding (750–2500 nm), with a high NIR-shielding figure of merit of 1.8 ± 0.1, is enabled by the incorporation of larger alkali ions such as K + and Cs + . Additionally, Fe 2+ -PSG demonstrates exceptional stability, maintaining its performance after 12 months under ambient conditions and 24 h in hot water at 80 °C and in air at 120 °C. These high-performance characteristics are attributed to structural modifications that alter the splitting energy of ferrous ions, enabling precise control over optical properties across the visible and NIR spectrum. Manufactured using the scalable and cost-effective melt-quench method, Fe 2+ -PSG offers a practical solution for sustainable window production, addressing limitations of current technologies and paving the way for real-world applications.
研究领域:
材料科学
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光学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2023
·
IF 3.3
Jingxiao Liu,Dayi Yang,Fei Shi,Xiaoying Song,Guohao Cui,Huijun Sun,Chaofan Chen,Ziwei Tian,Meiyu Wang
In order to obtain high-performance energy-saving window material, Pt-Cs x WO 3 /SiO 2 composite aerogels were prepared by in-situ solvothermal synthesis and ambient pressure drying method. The relationship among the near-infrared shielding ability, thermal conductivity , thermal insulation performance and microstructure of Pt-Cs x WO 3 /SiO 2 composite aerogel was investigated. The as-prepared composite aerogel after heat-treatment at 450 °C exhibits low thermal conductivity (0.1090 W/(m·k)) of SiO 2 aerogel and near-infrared shielding ability at the same time due to its high pore volume (0.537–0.796 cm 3 /g), specific surface area (113.968–141.284 m 2 /g) and W 5+ content. The near-infrared shielding rate at 1500 nm of the composite aerogel could attain to 84% when the visible light transmittance is 72%. As Pt-Cs x WO 3 /SiO 2 composite aerogel has the synergistic effect of near-infrared shielding and low thermal conductivity, the composite aerogel heat-treated at 450 °C has excellent visible light transparency and thermal insulation performance. This research provides a new idea for developing high efficient energy-saving window glasses.
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
ACS Applied Energy Materials
·
2022
·
IF 6.959
Shanshan Deng,Qingfeng Chang,Donglai Li,Boyu Wang,Haibo Jin,Jingbo Li
VO2 is a promising candidate for smart energy-saving windows because of its unique thermochromism but suffers from a high transition temperature of 68 °C and poor thermochromic performance near room temperature. We fabricated a W-VO2/Cs0.32WO3 (CWO) composite flexible film, which shows a low transition temperature of 31.1 °C (W-VO2/CWO = 1:1) and much enhanced near-infrared shielding performance. The optimal W-VO2 + 0.5CWO reaches a desired near-infrared shielding efficiency of 76.34%. A model-house test under simulated solar irradiation further signifies the excellence of the W-VO2 + 0.5CWO composite flexible film under ambient conditions. The robust performance is attributed to the synergetic effects between W-VO2 and Cs0.32WO3, among which the former possesses a low MIT transition temperature and the latter possesses photo-thermal performance.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
·
IF 5.3
Yutong Liu,Xinpei Yuan,Mengqi Xie,Zhidong Liu,Xiaohui Zhao,Hui Cao,Huihui Wang,Zhou Yang,Dong Wang,Wanli He
In this study, we propose a simpler method to fabricate single-layer polymer cholesteric films with reflective bandwidth over 1500 nm instead of the previous multilayer films. We add polymerizable chiral compounds and non-polymerizable chiral compounds with the same rotation direction into the liquid crystal mixing system. Due to the presence of photoinitiators and UV-absorbing dyes, when UV light irradiates the polymerization, the polymerizable monomers, including the polymerizable chiral compounds, are rapidly polymerized in the near-light side, and the non-polymerizable monomers, including the non-polymerizable chiral compounds and partial monoacrylate monomers, do diffusion movement towards the far-light side, and after the anchoring action of the polymer network, the formation of the small-large-small pitch gradient distribution is realized, which results in the broadband reflection. In the paper, the effect of multiple factors on the reflection broadband of the film is explored, and the polymer-stabilized cholesteric liquid crystal (PSCLC) film with a reflection bandwidth of 1572 nm is successfully prepared, which is demonstrated to have many desirable properties, including thinness and flexibility. The flexible CLC films reported in this study are expected to be promising prospects for several applications such as shielding infrared devices, energy-efficient windows for automobiles, and modern building facades.
研究领域:
材料科学
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光学
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高分子化学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·
IF 21.8
He Linhan,Fan Yafei,Chen Yao,Huang Yuxiang
Transparent wood (TW) has emerged as a promising alternative to glass for sustainable architecture, yet its rigid and passive nature limits its adaptability for dynamic light and temperature regulation. We report a thermally reversible transparent wood (TRTW) featuring a semi-interpenetrating polymer network architecture constructed from polyethylene glycol (PEG) and poly (ethylene glycol) diacrylate (PEGDA) infused into a delignified wood scaffold. This architecture enables reversible transitions between stiff and soft states via PEG crystallization/melting and dynamically modulates light transmittance (from 80.6% to 48.2%) through refractive index mismatch. The TRTW exhibits excellent shape adaptability at elevated temperatures (bendability exceeding 170°), enhanced toughness (elongation increased by 540%), and superior impact resistance (9.81 kJ/m 2 , ~ 12× that of glass). It also features an adjustable phase transition temperature (T m ≈ 30 °C, T c = 12.96–18.85 °C) and high latent heat (up to 95.8 J/g), enabling heat storage and temperature buffering for passive building energy regulation. The synergy of thermo-reversible optics and mechanics within a wood-based framework provides a novel strategy toward intelligent and energy-efficient building skins and optical devices.
研究领域:
材料科学
·
可持续建筑
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聚合物科学
·
节能建筑材料
·
光学材料
✓ 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）