Surfaces and Interfaces
·
2024
·
IF 5.7
Guolong Li,Xi Wang,Fengcai Zhang,Liang Yin,Di Zhang,Kaiying Zhao,Zhibin Zhang,Xiaoming Qian,Yaming Jiang,Songnan Zhang
Ice can lead to inconvenience and disasters in human activities, making it a widely concern for researchers to find solutions to prevent icing. Hydrophobic materials have been developed for passive anti-icing with a long time, but without active deicing effect. Recently, researchers have explored hydrophobic photothermal materials with passive anti-icing and active deicing ability, which are limited on cloudy days and the night. Consequently, developing materials with anti-icing/icephobic and deicing capabilities for all-weather use has emerged as an innovative strategy. This paper develops hydrophobic PDMS/Cu-Ni@PET with photo/electric thermal properties to support all-weather anti-icing/icephobic and deicing, which is synthesized using copper-nickel and hydrophobic polydimethylsiloxane (PDMS). The PDMS/Cu-Ni@PET exhibits an outstanding anti-icing performance with a delayed icing time of 1224 s at -10 °C, and achieves a surface equilibrium temperature of 68.9 °C under 1 sunlight intensity, enabling the melting of surface ice particles within 614 ± 118 s. When a voltage is applied to both sides of the fabric, the equilibrium temperature can be reached within 60 s, and attained 158 °C at 6 V, enabling the melting of surface ice within 97 s. It provides a novel approach for developing photo/electric thermal superhydrophobic coatings that can maintain all-weather deicing performance.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2016
·
IF 11.553
Qunwei Tang,Hongna Zhang,Benlin He,Peizhi Yang
Future solar cells may produce electricity in all weathers. We present here a cost-effective and high-efficiency graphene based conducting composite tailored all-weather solar cell that can be actuated with raindrops and sunlight. Due to the formation of π-electron|cation double-layer pseudocapacitance at conducting composite/raindrop interface, the delocalized π-electrons on graphene can migrate along percolating pathways forward at spreading process and backward at shrinking periods, resulting in charging and discharging of the pseudocapacitor. The optimized solar cell yields a photoelectric conversion efficiency of 9.8% under simulated sunlight irradiation (air mass 1.5, 100 mW cm −2 ) as well as current over several microamps and voltage of hundreds of microvolts under simulated raindrops. This work could extend our knowledge of future all-weather solar cells.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qingqing Zhang,Yaxin Chen,Ren Liu,Jing Luo
Photothermal superhydrophobic coatings are one of the most promising anti-icing/de-icing materials. However, the intermittence of light energy limits the application of photothermal energy conversion technologies when continuous de-icing is required. Herein, an innovative solution for the integration of photothermal effect and phase change thermal storage was proposed. In this work, an efficient anti-icing/de-icing coating was successfully fabricated based on multifunctional polyaniline microcapsule encapsulating butyl stearate (BS). Benefiting from the heat storage capacity of BS in the microcapsule, the coating could achieve all-weather anti-icing capability. Under the condition of −20 °C, the freezing time of water droplets on the coating with only 10 wt% microcapsules was delayed by about 12.6 times compared to the blank coating. At the same time, under simulated dark conditions, the freezing time of water droplets could be delayed by about 14.1 times. Moreover, owing to the thermal conductivity and high solar energy exploitation, polyaniline endowed the coating with outstanding photothermal de-icing performance, presenting the superiority of outdoor applications. Under NIR (200 mW/cm 2 ) illumination, the melting time of water droplets was reduced to 18 s, which was nearly 10 times faster than that on the blank coating. Moreover, the polyaniline microcapsules also possessed outstanding anticorrosion property, which was particularly attractive for mental coating applications. The combined properties of this all-weather anti-icing and de-icing coating could render it a promising contender for challenging outdoor applications.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Materials Chemistry Frontiers
·
2021
·Vol. 6
·期 3
·306-315
·
IF 6.482
Jing Wu,Xiaofeng Li,Tingting Zhang,Xiao-Peng Li,Wei Li,Zhong-Zhen Yu
Solar steam generation devices cannot work properly under weak solar light irradiation and even no solar light. Herein, all-weather-available electrothermal and solar–thermal wood-derived porous carbon-based water steam generation devices are fabricated for highly efficient water evaporation and purification by preparing wood-derived hydrophilic and porous carbon architectures, generating grooves on their top surfaces, and coating with hydrophobic layers of carbon nanoparticles. Under solar light irradiations, the eco-friendly wood-derived steam generation device can harvest solar energy efficiently for thermally evaporating water on the basis of its solar–thermal energy conversion mechanism. Under a weak solar light irradiation or even no solar light, the steam generator can still generate clean water via its electrothermal evaporation mechanism. Under 1-sun irradiation, the steam generator exhibits a water evaporation rate of 1.49 kg m−2 h−1 with an evaporation efficiency of 77.2%. By integrating the solar–thermal and electrothermal energy conversion mechanisms, an ultrahigh water evaporation rate of 11.73 kg m−2 h−1 is readily achieved under 1-sun irradiation with a voltage of 6 V. The integration of the electrothermal and solar–thermal energy conversion mechanisms makes the environmentally friendly carbon-based steam generator all-weather-available for generating sufficient clean water from wastewater and seawater.
研究领域:
材料科学
·
环境工程
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 52
·2308845
·
IF 19
Yongji Li,Zhongyuan Tian,Xuan-Zhi Gao,Hao-Yu Zhao,Xiaofeng Li,Zhong Lin Wang,Zhong-Zhen Yu,Dan Yang
A self-powered and sustainable traffic monitoring system is highly required for future urban development. Herein, self-healable piezoresistive sensors and triboelectric nanogenerators (TENGs) are constructed by in situ polymerization of polyvinyl alcohol-polyacrylamide double network hydrogel in the presence of sodium alginate and tannic acid-modified cellulose nanocrystals (denoted as PPC) for all-weather self-powered intelligent traffic monitoring applications. Because of hydrogen bonding and boron ester bonding, the resultant PPC-based strain sensor can rapidly self-heal and restore its sensing ability within 1 min with a self-healing efficiency of 97.4%. Based on piezoresistive effect, the ions in sodium alginate endow the PPC-based strain sensor with a relatively high gauge factor of 8.39, which can monitor the motion and fatigue of drivers. Based on triboelectrification effect, the PPC-based TENG sensor can detect instantaneous vehicle speed, judge traffic accident liability, evaluate vehicle weight, and alert the driver to prevent accidents caused by drowsy driving. After partially replacing water in the PPC with glycerin, the resulting PPC-based TENG sensor exhibits stable performance at temperatures ranging from -30 to 40 °C, ensuring its all-weather monitoring ability. The all-weather and self-powered intelligent traffic monitoring system is promising for ensuring the security of future cities.
研究领域:
材料科学
·
能源技术
·
智能系统
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 4
·2289-2304
·
IF 6.123
Shi Chun,Zhang Lili,Shi Zhengjun,Zai Zhenqiang,Ma Jinxia,Wang Zhiguo
Ag–ZnO/cellulose nanocomposites with an all-weather photocatalytic performance that responds to all light conditions (including ultraviolet light, visible light, and even darkness) were fabricated by adjusting the surface groups and aspect ratios of the cellulose nanofiber substrate. The cellulose nanofibers improved the dispersibility and photostability of the Ag–ZnO nanoparticles (NPs), thereby enhancing the photocatalytic activity. The morphologies and sizes of the ZnO and Ag NPs within the Ag–ZnO/cellulose nanocomposites were controlled by using cellulose nanofibers with different surface groups and aspect ratios. ZnO NPs with average diameters of 250, 500, and 100 nm were synthesized in situ using cellulose nanocrystals (CNCs), cellulose nanofibrils (CNFs), and TEMPO-mediated oxidized cellulose nanofibrils (TOCNFs), respectively. The Ag–ZnO/TOCNF nanocomposites exhibited excellent all-weather photocatalytic performance, high loading amounts, and large effective contact area with pollutants. Free radical trapping experiments demonstrated that ·OH had the most significant effect on the photocatalytic activity. The photocatalytic activity of the Ag–ZnO/TOCNF nanocomposites was improved by preventing the recombination of electrons and holes and increasing the contact area with pollutants and light. The photogenerated electrons stored on the surface of the ZnO NPs and Ag NPs were further used for reducing H 2 O 2 to generate ·OH free radicals in the dark, which continued to catalyze the degradation of pollutants without light irradiation. Moreover, the photocatalytic degradation of methyl orange to CO 2 and H 2 O was confirmed via a catalytic mechanism and liquid chromatography–mass spectrometry.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Qi Zhang,Dong Liu,Wei Pan,Haiyan Pei,Kunlun Wang,Shengang Xu,Yingliang Liu,Shaokui Cao
The multifunctional photoelectronic devices are recently attracting much more attention due to their potential enlarged applications. The flexible stretchable electrothermally/photothermally dual-driven heaters for all-weather wearable thermal management are presented in this work with nano-embedded hierarchical Cu x S-coated PET fabrics. Herein, the hierarchical nano-embedded Cu x S film is fabricated via a simple chemical bath method for high electrical conductivity and highly efficient inelastic collision of electro/photo-generated carriers. The hierarchical nano-embedded Cu x S morphology produces the low sheet resistance of 1.26 Ω sq -1 and the super low total heat transfer coefficient of 3.256 × 10 -5 W/ o C·mm 2 , which lead to the high-efficient electro/photo-dual-driven heating effect in the Cu x S@PET fabrics. The saturated temperature on the as-fabricated flexible wearable heaters reaches up to 172 °C. The thermal conversion devices also bear the excellent stability, reproducibility, stretchability, controllability and corrosion-resistant characteristics. Interestingly, their excellent thermal conversion performance could be achieved by freely exchanging the driving power sources, such as electricity-supplying equipment, 635-nm laser, infrared physiotherapy lamp and solar simulator, which provides a necessary precondition for the all-weather applications of flexible wearable heaters. The as-fabricated electro/photo-dual-driven heaters on the Cu x S@PET fabrics have the promising applications in wearable electronics, all-weather self-heating facilities, out/in-vivo physiotherapy, and so on.
研究领域:
材料科学
·
光电功能器件
·
可穿戴技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Huiyu Yang,Xiaohua Cheng,Liangang Zhao,Xiangyi Zhang,Bin Lu,Zhengfei Tan,Hai Liu,Liangjun Xia,Weilin Xu
Harvesting electrical energy from the ubiquitous water cycle to power flexible electronic devices is receiving increasing attention. However, the development of moisture-driven generators with high and stable power output remains a significant challenge. Here, we design a photothermal evaporation-driven moisture generator (PEMG) that modifies a cotton fabric with in situ polymerized pyrrole by a polydopamine (PDA)-structured color film to form an asymmetric photothermal temperature gradient. The PDA asymmetric photothermal layer not only effectively addresses the issue of insufficient sustained power generation caused by water adsorption saturation but also mitigates the unstable moisture gradient resulting from excessive water evaporation. CF@PPy@PDA (purple) achieved an open-circuit voltage ( V oc ) of 0.74 V and a short-circuit current ( I sc ) of 0.72 mA under 60% relative humidity (RH) and 1-sun illumination, respectively. White LED bulbs emit a steady stream of light for more than 24 h. Moreover, the V oc of the PEMG (six units in series) reaches 1.18 V at an average solar intensity of 1000 W m −2 and 43% RH, while the V oc is 0.72 V at night (52% RH). Meanwhile, wearable systems designed with integrated PEMG units provide sufficient power supply for electronic devices under natural conditions.
研究领域:
能源材料
·
纳米技术
·
环境能量采集
·
可穿戴电子
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）