Engineering
·
2022
·
IF 12.834
Xuan Zhang,Qi Wang,Ruiping Zou,Bo Song,Chunze Yan,Yusheng Shi,Bin Su
Three-dimensional (3D)-printed magnetic soft architectures have attracted extensive attention and research from the engineering and material fields. The force-driven shape deformation of such architectures causes a change in the magnetic field distribution, indicating the capability to convert mechanical energy to electricity. Herein, we fabricate a flexible superhydrophobic and magnetic device by integrating two kinds of 3D printing approaches. The 3D-printed magnetic device (3DMD) exhibits a long-term stable mechanoelectrical conversion capacity under consecutive water droplet dripping. The output current of the 3DMD is higher than that of records in the existing literature. Combined with Maxwell numerical simulation, the mechanoelectrical conversion mechanism of the 3DMD is investigated, further guiding regulation of the diverse parameters. Moreover, three 3DMDs are integrated to light up a commercial light-emitting diode (LED) by a stream of collected rainwater. Such a combined design incorporating energy conversion is believed to promisingly motive advances in the 3D printing field.
研究领域:
材料科学
·
工程学
✓ 已验证
DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 21
·
IF 12.5
Siru Chen,Kaixin Lin,Sai Liu,Chui Ting Kwok,Lin Liang,Ze Li,Shuangdui Wu,Ziai Liu,Chuyao Wang,Aiqiang Pan,Jianheng Chen,Tsz Chung Ho,Shauhrat S. Chopra,Yihao Zhu,Qingping Sun,Wei Li,Borong Lin,Chi Yan Tso
Tremendous efforts have been dedicated to facilitating heat dissipation into cold universe through radiative cooling. Nevertheless, its applications remain limited by overcooling in cold conditions and reduced effectiveness under nonclear skies. We present a robust metafilm inspired by the adaptive capabilities of horned lizards (Phrynosoma) to overcome these challenges. This design extends energy harvesting to rainy conditions while maintaining thermal regulation on clear days. The metafilm features a sandwich structure with fluorinated ethylene propylene/indium tin oxide outer layers for raindrop-induced electricity generation and thermochromic core layers for self-regulated heating and cooling. It achieves an optical contrast exceeding 63% in the visible spectrum, enabling sub-ambient cooling in hot conditions and above-ambient heating when cold. In addition, it demonstrates efficient droplet-induced electricity generation, delivering a high-voltage output of 208 volts with exceptional long-term stability. This multifunctional metafilm overcomes key limitations of traditional radiative coolers, offering a versatile approach for all-weather energy harvesting.
研究领域:
材料科学
·
能源工程
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
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
·
2025
·
IF 13.2
Peihua Zhang,Runpeng Jiang,Boyuan Li,Aoxun Liang,Xueye Chen,Xiaoxiao Chu
Superhydrophobic surfaces have broad application prospects in droplet transport, sensors, microfluidics and other fields. However, most of the superhydrophobic surfaces are manufactured on rigid substrates or flexible substrates with low deformation. When deformation occurs, the superhydrophobic properties are difficult to be guaranteed, which hinders the practical application of superhydrophobic surfaces. Using a mixture of prepolymer A, crosslinking agent B and dimethylsilicone oil as raw materials, PDMS/dimethylsilicone oil superhydrophobic high tensile film (Pdoshtf) is prepared by simple template and low surface energy treatment. The prepared Pdoshtf shows excellent tensile property and superhydrophobic stability, the tensile ratio at break is 300 %, and the excellent superhydrophobic property can be maintained after 250 % stretching. In addition, droplet falling on the Pdoshtf bounces back in time without any residue, showing excellent superhydrophobic properties. Finally, an energy harvesting device composed of Pdoshtf and electromagnetic system is designed and prepared, which can collect the energy of raindrops through droplet drop and rebound.
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
Environmental Technology & Innovation
·
2024
·
IF 6.7
Rui Zhao,Zheng Zhang,Meng Yu,Rui Gao,Zhe Sun,Shou-he Pan,Ying-jian Ma,Yong Xu,Xue-min Wu
Pine wilt disease (PWD) is one of the most destructive diseases affecting global forest ecosystems, and Monochamus alternatus (MA) is the main insect vector of pine wood nematodes. Effective control methods that cover the entire emergence period of vector insects are urgently required. Improving the rainfastness of agrochemicals on leaves can extend the holding period. Thus, a new environmentally friendly castor oil-based polyurethane nanoemulsion (CWPU-NE) was developed to enhance the rainfastness of clothianidin. CWPU adsorbs on the surface of clothianidin particles through electrostatic and intermolecular hydrogen bonding and attaches to the surface of leaves through hydrogen bonding and film formation. The results showed that clothianidin was still effective against MA 60 d after application. The developed CWPU-NE functioned as an efficient rainfastness adjuvant that enhanced the rainfastness, retention, protection, and sustained release behavior of clothianidin. Thus, it has great potential for PWD control and wider agricultural applications.
研究领域:
植物保护
·
森林生态学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Qi Sun,Jing Tian,Zhi Qin,Hao Li,Jie Shen,Pengchao Zhang,Wen Chen,Jing Zhou
Efficiently harvesting the inherent kinetic energy carried by raindrops upon impact offers considerable potential for powering microdevices. However, the conversion efficiency of the raindrop energy is low. In this paper, we present a piezoelectric energy harvesting device with a superhydrophobic and low adhesive surface for significantly improving the raindrop energy conversion efficiency. The piezoelectric energy harvesting device was prepared using a macro fiber composite (MFC) with low operating frequency, high sensitivity, and a large electromechanical coupling coefficient as a functional element. The superhydrophobic surface allowed raindrops to rebound. At the same time, the raindrops can leave the surface of the device quickly after the end of their action so as to reduce the loss of kinetic energy generated by the collision of raindrops with solid surfaces. Compared to the untreated hydrophilic device, the energy conversion efficiency of the superhydrophobic piezoelectric energy harvesting device increased 172%. Under different test conditions, the device achieved a maximum peak power density of 338 W/m3. This approach provides a promising solution for efficient raindrop energy harvesting.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Nano Energy
·
2024
·
IF 16.8
Lina Zhou,Dongzhi Zhang,Xinyi Ji,Hao Zhang,Yan Wu,Chunqing Yang,Zhenyuan Xu,Ruiyuan Mao
With the widespread adoption of smart greenhouses, there is a significant increase in energy demand. Triboelectric nanogenerator (TENG) as an emerging energy harvesting technology has vast prospects for applications. Inspired by the water strider's ability to freely glide on the water surface , this study proposes a biomimetic superhydrophobic nanofiber film with rigid microstructures resembling the water strider's foot hairs as the negative friction layer material. It is utilized for constructing a superhydrophobic triboelectric nanogenerator (SH-TENG) for harvesting raindrop energy. The SH-TENG achieves an open-circuit voltage of 100 V and a short-circuit current of 15 μA. Furthermore, a theoretical model is proposed that relates the droplet release height to the droplet diffusion area. The correctness of this model is verified by experiments, providing further evidence for the process of converting droplet mechanical energy into electricity by SH-TENG. Finally, an SH-TENG with multiple top electrodes is proposed to continuously collect the energy of raindrops during falling. serving as a sustainable power source for self-powered environmental monitoring in smart greenhouses, corrosion protection of greenhouse steel frames, and electrically-stimulated pesticide controlled-release. This work provides a convenient approach for efficient collection of raindrop energy based on interface behavior control, which will guide the further development of droplet-based TENG towards higher performance and offer an innovative and sustainable solution to the energy supply issue in smart greenhouses.
研究领域:
能源材料学
·
环境科学
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Changjun Yang,Yamei Wang,Yan Wang,Zehui Zhao,Liwen Zhang,Huawei Chen
Liquid-solid based triboelectric nanogenerator (TENG) can be widely utilized for droplet energy harvesting , in which the hydrophobicity of triboelectric layer is crucial for output enhancement. However, poor mechanical properties of hydrophobic triboelectric layers prepared in classic methods greatly limit the TENG’s application. Here, a stretchable hydrophobic triboelectric nanogenerator (SH-TENG) with excellent output, and durability is devised by strongly bonding PTFE micro particles on a flexible substrate even under extreme stretching or abrasion. By synergistic enhancement of the PTFE particles on both contact-separation and charge-transfer between droplet and triboelectric layer, the transfer charge density of SH-TENG is increased to ∼4.74 × 10 −3 C/m 2 ·L, along with the open circuit voltage (V OC ) and short circuit current (I SC ) over 7 times and 6 times higher than TENG without PTFE modified, respectively. Moreover, under a stretching rate of 500%, the SH-TENG shows less 20% decline of its output performance to guarantee applications in flexible electronics. A miniature watch can be sufficiently powered by the SH-TENGs with total area of 0.016 m 2 under the simulated raindrop flow rate of 50 mL/min. With such outstanding performance and environmental adaptability, the SH-TENG can be integrated with various objects to collect droplet energy and supply electronic devices.
研究领域:
材料科学
·
能源技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2021
·
IF 17.881
Xuemei Li,Xiaoyu Ning,Luxian Li,Xiang Wang,Baowen Li,Jidong Li,Jun Yin,Wanlin Guo
Harvesting energy from raindrops has attracted extensive efforts due to the wide distribution of precipitation and vast potential applications. Among the various approaches developed for this purpose, droplets-based electricity generators (DEGs) based on electrostatic induction have been becoming an outstanding option in the aspect of output voltage and instantaneous power density. Performance dependence of DEGs on the device configuration and the dominating factors have to be revealed for the further optimization. Here, we comprehensively investigated the performance of DEGs with three different configurations, i.e . , bottom-electrode, top-electrode and double-electrode, and found that water-to-ground capacitance played an important role in determining the device output. Besides, the conductivity of water shows notable influence on the device performance, tap water with a conductivity around 300 μS/cm shows the highest efficiency in our measurements. Adapting an optimized power management circuit, the pulsed-like output of DEGs is converted to a constant voltage output of variable amplitudes, which is successfully used to charge a smart phone. Our results shed light on possible ways to further optimize the DEG configuration and their potential applications.
研究领域:
能源材料
·
纳米能源
·
环境能量采集
·
电力电子
·
功能器件
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2024
·Vol. 14
·期 16
·2303912
·
IF 24.4
Peipei Wu,Peng Yang,Zhaoqi Liu,Guangzhao Huang,Xinglin Tao,Siyao Qin,Xuanyi Dong,Li Zheng,Hexing Li,Xiangyu Chen,Zhong Lin Wang
In recent years, liquid–solid triboelectric nanogenerator (LSTENG) has attracted great attention. However, its low average power density and long charging time limit the practical application of this technique. Here, for the first time, a liquid–solid triboelectric nanogenerator combined with external charge-pumping method (ECP-LSTENG) is proposed. Compared to traditional LSTENGs, a charge storage capacitor is added in this ECP-LSTENG to store the output charges from the pumping generator. Then, a charge extraction capacitor is formed by the spreading and shrinking processes of falling droplet, while the charging and discharging process between charge storage and extraction capacitors can generate displacement current output for external circuit. Meanwhile, it is found that a special charged droplets adhesion phenomenon happens at the liquid–solid interface, which seriously hinders the continuous output of ECP-LSTENG. To overcome this limitation, a special coaxial deceleration commutation component is designed to ensure continuous output of the ECP-LSTENG. Finally, the peak power density of a droplet (50 µL) reaches 231.8 W m −2 , surpassing the highest research record to date by 1.43 times. This ECP-LSTENG provides a different approach for the future development of large-scale integrated raindrop generators for efficient raindrop energy harvesting.
研究领域:
纳米技术
·
能量收集
·
可再生能源
·
智能材料
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 35
·1803117
·
IF 13.325
Qian Zhang,Qijie Liang,Qingliang Liao,Mingyuan Ma,Fangfang Gao,Xuan Zhao,Yiding Song,Lijuan Song,Xiaochen Xun,Yue Zhang
Raindrop falling, which is one kind of water motions, contains large amount of mechanical energy. However, harvesting energy from the falling raindrop to drive electronics continuously is not commonly investigated. Therefore, a self-cleaning/charging power system (SPS) is reported, which can be exploited to convert and store energy from falling raindrop directly for providing a stable and durable output. The SPS consists of a hydraulic triboelectric nanogenerator (H-TENG) and several embedded fiber supercapacitors. The surface of H-TENG is amphiphobic, enabling the SPS self-cleaning. The fiber supercapacitor which uses α-Fe 2 O 3 /reduced graphene oxide composite possesses remarkable specific capacitance, excellent electrical stability, and high flexibility. These properties of the fiber supercapacitor make it suitable for a wearable power system. A power raincoat based on the SPS is demonstrated as application. After showering by water flow, which simulates falling raindrops, for 100 s, the power raincoat achieves an open-circuit voltage of 4 V and lights a light-emitting diode for more than 300 s. With features of low cost, easy installation, and good flexibility, the SPS harvesting energy from the falling raindrop renders as a promising sustainable power source for wearable and portable electronics.
研究领域:
纳米能源
·
柔性电子学
·
可穿戴设备
·
能源材料
·
环境能量采集
·
功能表面工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yuxi Yang,Xiaojing Liang,Liang Ma,Min Chen,Limin Wu
Rainwater is a clean and abundant energy source, and the liquid–solid triboelectric nanogenerator (LS-TENG) has emerged as a promising technology for harvesting and converting raindrop energy into electricity. Despite its potential, practical applications of LS-TENG have been limited by its low output performance and complex fabrication processes. Herein, we propose a simple and efficient strategy for constructing high-performance LS-TENG by introducing a novel composite triboelectric layer composed of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) doped with SiO2@Cu and 1H,1H,2H,2H-perfluorooctyltriethoxysilane. This design simultaneously enhances the dielectric constant and hydrophobicity of the triboelectric coating through a polarization effect and surface tuning. As a result, the LS-TENG achieves an excellent output voltage of 19 V and a current of 6.7 μA from a single waterdrop, corresponding to 2.5 and 2.8 times those of undoped PVDF-HFP, and can successfully power small electronic devices. Furthermore, the entire LS-TENG, including both the triboelectric and electrode layers, is fabricated via facile, in situ coating processes, offering good scalability, substrate adaptability, and optical transparency. Therefore, this work integrates material-level output enhancement with process-level simplicity, holding great potential for practical applications in droplet energy harvesting.
研究领域:
纳米能源
·
功能材料科学
·
微纳器件
·
可再生能源技术
·
表面工程
✓ 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）