Nano Energy
·
2024
·
IF 16.8
Xue Tang,Bei Jiang,Qingtao Zhu,Xianfen Chen,Lei Xiao,Lijun Zhou,Junyan Chen,Jiabin Chen,Zhigao Liu,Quanping Yuan
ABSTRACT The multi-functionalization on wood and its derivant has gained more and more attention for its resource-rich, reproducible and biodegradable properties. In this work, a wood-based multifunctional composite displaying piezoelectric and moist-electric performance has been proposed. Wood porous material (WPM) was firstly prepared by delignification, oxidation and impregnation with MXene, in which zinc oxide (ZnO) was loaded via hydrothermal synthesis method. It can be found that the negative charge on the porous surface in MXene-impregnated WPM can attract Zn 2+ by electrostatic adsorption, creating a large number of nucleation sites for the growth of ZnO, thus accelerating its nucleation rate. Moreover, the increase of ZnO loading can enhance the fluidization current, so the obtained OWPM/MXene/ZnO moist-electrical generator (MEG) can generate an open-circuit voltage (V OC ) of 0.75 V at a test humidity of 85%RH, as well as can collect energy from hot steam with the V OC of about 0.4 V. Simultaneously, the heterojunction formed between ZnO and MXene further enhance the piezoelectric performance. Finally, a piezoelectric generator (PEG) with anisotropic piezoelectric sensing properties was prepared by the impregnation with polydimethylsiloxane (PDMS) in OWPM/MXene/ZnO and the follow densification. It can generate a V OC up to 4.71 V when a force of 45 N was applied perpendicular to the fiber direction. The four PEGs series connection can light up a LED. Consequently, the application performance of MEGs and PEGs based on wood materials highlight potential in piezoelectric and hydroelectric harvesters.
研究领域:
材料科学
·
能源技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2021
·
IF 17.881
Yuanzheng Zhang,Xiangyang Gao,Yunchen Zhang,Jinzheng Gui,Chengliang Sun,Haiwu Zheng,Shishang Guo
Self-charging power systems (SCPSs) that combine energy harvest/store technologies have attracted extensive attention owing to their vast potential in the Internet of things (IoT). Still, the long charging time is a severe obstacle to the practical use of SCPSs. Herein, we have successfully prepared a high-efficiency SCPS composed of a performance-enhanced rotational hybrid nanogenerator (R-HNG) and high-energy-density asymmetric supercapacitor (ASC). The R-HNG consists of a rotational triboelectric nanogenerator (R-TENG) and an electromagnetic generator (EMG), exhibiting superior charging performance. Among them, the output characteristics of the R-TENG can be enhanced by adjusting the work function difference between the friction layer and electrode. The working principle of the R-HNG is systematically explained by both Kelvin probe force microscope (KPFM) and finite element simulation. Meanwhile, the as-prepared ASC based on honeycomb-like NiCo-layered double hydroxides (LDH) nanosheets are used as an energy storing device within SCPS. The SCPS can reach 5.9 V after 120 s under a rotation speed of 200 rpm, which can power a homemade positioning device for outdoor search and rescue. This work provides a novel and effective solution for constructing high-performance SCPSs and is expected to accelerate the development of SCPSs in the IoT.
研究领域:
物联网
·
能源技术
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xianfen Chen,Qingtao Zhu,Duoduo Li,Lijun Huang,Junyan Chen,Xue Tang,Jiabin Chen,Quanping Yuan
Natural lignocellulose has asymmetric crystal structures and abundant oxygen-containing groups, which endow cellulose materials with piezoelectric and moist-electric properties. In this work, micron-scale wood fiber was oxidated by using 2,2,6,6-tetramethylpiperidine (TEMPO), then the tracheid structure of fiber produced cracks accompanied by exposing more active groups of hydroxyl groups inside the tracheid. ZnO was also grown on the tracheid by one-step hydrothermal method to construct a coaxial structure to enhance the piezoelectric performance of fiber/ZnO piezoelectric generator (PEG). The assembled fiber/ZnO-PEG can produce an open-circuit voltage (V OC ) of 5.5 V and a power density of 21.57 μW cm −3 under a cyclic force of 50 N at 2 Hz. In addition, according to hydrophilic properties of the fiber/ZnO composite film, it was also assembled into a moist-electric generator (MEG) by constructing an asymmetric electrode. The fiber/ZnO-MEG can generate the V OC of 0.47 V at 85 % RH. After connecting five 11CZ-2ZnO-MEGs in series, the LCD (liquid crystal display) and LED (light emitting diode) can be successfully lit. Moreover, when the assembled fiber/ZnO MEG was pasted on the wrist, the output electrical signals increase significantly during wrist bending process, which can be attributed to the moist-electric effect and piezoelectricity. The proposed energy harvesting device has the advantages of low cost, biocompatibility and biodegradability, which displays great potential in the field of green energy, as well as provides reference for multi-angle design of sensing device.
研究领域:
材料科学
·
能源技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2020
·
IF 16.602
Nan Zhang,Haojie Gu,Keyu Lu,Shimeng Ye,Wanghuai Xu,Huanxi Zheng,Yuxin Song,Chaoran Liu,Jiwei Jiao,Zuankai Wang,Xiaofeng Zhou
Harvesting water kinetic energy is a prospective way to obtain sustainable power. However, conventional water energy harvesting technologies are restricted by specific operating locations and fabrication materials. These techniques urgently need to be improved and supplemented with new methods. Here, we report a novel and universal single electrode droplet-based electricity generator (SE-DEG) that allows converting water droplet kinetic energy into electricity power on any surfaces of artificial or natural materials such as PTFE , glass, wood, aloe, cicada wing, stone and etc. This functionality is endowed by a special configuration characterized by the location of the electrode on the top of dielectric material rather than underlying as in the conventional triboelectric nanogenerator (TENG). Such special configuration can effectively harness the triboelectric charges generated without going through the electrostatic induction process between bottom electrode and the surface in the case of TENG. We envision that SE-DEGs represent a new dimension in ability to harvest abundant hydrodynamic energy everywhere.
研究领域:
能量收集
·
纳米发电机
·
可再生能源
·
材料科学
·
流体力学
✓ 已验证
DOI
高影响因子
Science China-Technological Sciences
·
2021
·Vol. 64
·期 9
·2003-2011
·
IF 3.572
Xu GuanPing,Zheng YouBin,Feng YanGe,Ma ShaoChen,Luo Ning,Feng Min,Chen ShouGang,Wang DaoAi
Harvesting energy from ambient environment has been considered as a promising strategy for driving portable electronic devices in a sustainable way. A wind driven triboelectric-electromagnetic hybrid nanogenerator has been fabricated to convert wind energy into electricity. It is composed of an electromagnetic generator (EMG) and a triboelectric nanogenerator (TENG) with the output power of 35 and 0.32 mW, respectively when the wind speed is 5 m/s. Generally, TENG shows a low current output with a high voltage output characteristic, on the contrary the EMG shows a high current output and a low voltage output. This hybrid nanogenerator overcomes these problems and exhibits comprehensive and efficient performance on scavenging energy. Moreover, in view of the output performance and charging ability of the hybrid nanogenerator, it shows high stability, making it suitable for charging capacitors or batteries and driving portable electronics sustainably. A new structure of integrated TENG and EMG was designed to harvest wind energy, which shows potential applications in portable and small device power supply system, especially in the areas of remote mountains, deserts, islands, etc., as emergency power supply.
研究领域:
能源工程
·
纳米技术
·
可再生能源
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
Energy Technology
·
2022
·Vol. 10
·期 12
·2200699
·
IF 4.149
Wanli Wang,Dongfang Yang,Zhenxing Huang,Han Hu,Licheng Wang,Kai Wang
Triboelectric nanogenerator (TENG) has the advantages of low cost, low weight, simple structure, and high efficiency. It is a promising low-frequency mechanical energy capture technology, which shows great potential in dealing with energy and environmental crisis and promoting new electronic products. TENGs have demonstrated irreplaceable design freedom over traditional electronic devices, including its ability to work independently of electrodes. In fact, the displacement current is an unreal current, it can work independently without electrodes. Moreover, due to the lack of “shielding effect” of the electrode, the surface potential can be larger than devices worked with electrodes. Here, based on TENG's high-voltage characteristic without electrode, the application of dust removal is explored, and a kind of electrodeless polyethylene triboelectric blackboard eraser was demonstrated as an example, which can effectively restrain the flying of chalk dust (limit the dust diffusion within 0.648 m). The electrostatic charge decayed blackboard eraser can be recharged by the electrodeless TENG without requirement of electrodes establishment. In fact, contact electrification may happen frequently in natural environment, and further design may be achieved without the limitation of electrodes.
研究领域:
能源技术
·
环境科学
·
电子工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Kun Zhao,Zhenhua Song,Zongqiang Gao,Wei Gao,Ming-Jin Liu,Bingni Gu,Junhong Guo,Yu-Lun Chueh
Triboelectric-electromagnetic hybrid nanogenerator (HNG) with high output performance provides a very promising solution for realizing self-powered microelectronic devices. However, the complex structures and large mass of traditional HNGs make them difficult to prepare and carry. In this study, a rotating HNG based on flexible neodymium iron boron/ethyl cellulose (NdFeB/EC) composite films was designed for wind energy scavenging. A lightweight composite film with triboelectric and ferromagnetic properties, which can significantly reduce the weight of the rotor, was prepared to replace the magnet. Operated at a wind speed of 15.5 m/s, the triboelectric nanogenerator (TENG) unit of the optimized HNG with an interdigitated electrode gap of 2 mm can generate an open-circuit voltage (V oc ) and a short-circuit current (I sc ) of 55 V and 5.4 μA, respectively. The maximum power of TENG is 99.2 μW under the condition of an external load resistance of 10 MΩ. The corresponding electromagnetic generator (EMG) unit can produce V oc and I sc of approximately 0.16 V and 59.3 μA, delivering an output power of 2.5 μW at a matched loading resistance of 2.3 kΩ. Compared to the individual TENG or EMG units, the HNG exhibited better charging performance. A 470 μF capacitor can charge to 3.4 V within 600 s, and the stored energy can successfully power a commercial soil temperature–humidity meter to work continuously for 75 s and light 30 blue LEDs in parallel. This research is of great scientific significance for developing triboelectric–ferromagnetic dual-functional materials and designing highly integrated and lightweight HNGs.
研究领域:
材料科学
·
能源技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 31
·2400505
·
IF 27.4
Congyu Wang,Jianming Wang,Peng Wang,Yihan Sun,Wenlong Ma,Xiaoyi Li,Maomi Zhao,Dun Zhang
The droplet electricity generator (DEG) is a solid–liquid triboelectric nanogenerator with transistor-inspired bulk effect, which is regarded as an effective strategy for raindrop energy harvesting. However, further enhancement of DEG output voltage is necessary to enable its widespread applications. Here, high-entropy ceramics are integrated into the design of DEG intermediate layer for the first time, achieving a high output voltage of 525 V. High-entropy ceramics have colossal dielectric constant, which can help to reduce the triboelectric charge decay for DEG. Furthermore, the effect of factors on DEG output performance when employing high-entropy ceramics as the intermediate layer is extensively analyzed, and the underlying mechanisms and mathematical models are explored. Finally, the enhanced output voltage of DEG not only facilitates faster energy harvesting but also develops a novel method for rapid bacterial detection. This work successfully integrates high-entropy ceramics into DEG design, significantly enhances the output voltage, and offers a novel direction for DEG development.
研究领域:
材料科学
·
纳米技术
·
能源工程
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·Vol. 63
·期 6
·1817-1827
·
IF 3.2
Yuan Cong,Hongyuan Zhang,Yizhi Liu,Fante Liu,Zidi Zhang,Xu Liu
In this article, a piezoelectric thin film was obtained by mixing polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) and barium titanate (BTO) via a solvent vaporization process. All the morphologies, crystal phases, thermal and electrical tests, as well as potential simulations by COMSOL, were studied to analyze sample performances. It has been demonstrated that BTO has a positive effect on increasing the piezoelectric functional phase-β phase within P(VDF-TrFE). Furthermore, the optimal ratio of BTO to P(VDF-TrFE) was determined to be 10 wt%. BTO nanoparticles were evenly distributed in the P(VDF-TrFE) substrate, forming a more directional structure. Based on the most suitable material composition, piezoelectric, and triboelectric nanogenerators were constructed to harvest mechanical energy from human motions. Moreover, the factors influencing the electrical outputs of nanogenerators were systematically studied, such as the force values and frequencies of excitation, as well as the piezoelectric layer materials. The applications of lighting LEDs highlighted the practical use in everyday life. Finally, the comparison between simulations, theoretical analysis, and experimental results demonstrated the effect of BTO in enhancing the overall material properties. This work expands the application potential of piezoelectric nanocomposites in energy collection and storage by designing and optimizing ceramic-doped piezoelectric polymer composites.
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
Nano Energy
·
2023
·
IF 17.6
Fengjiao Huang,Peng Yang,Zhaoqi Liu,Dehong Yang,Ling Huang,Yuxiang Shi,Xinglin Tao,Yao Chen,Hexing Li,Xiangyu Chen,Zhenfeng Bian
Water is an important resource for building different energy systems towards diversified applications. In this paper, a novel hybrid nanogenerator is proposed based on a water-wave triboelectric nanogenerator (TENG) and evaporation generator, which opens up a more effective approach to fully utilize the energy from water. This hybrid nanogenerator can solve the problem of insufficient output of water wave TENGs in calm water. The optimized peak power of water-wave TENG can reach 0.62 mW under simulated waves frequency of 2.5 Hz, while a capacitor of 0.33 µF can be charged to 15 V by TENG within 80 s in actual water waves. The evaporation generator based on wood block can continuously generate direct currents during the spontaneous evaporation of water. The solar-vapor conversion efficiency of evaporation generator can reach 84.2%, while the evaporation generator can provide a maximum current density of 3.2 μA·cm −2 and a maximum output power density of 1.4 mW·m −2 with a matching load of 10 kΩ (23 ℃, 30% RH). To demonstrate the application capability of the evaporation generator, we design a multi-stage boost circuit coupled with the pulse charging method, which can increase the voltage output and effectively reduce the charging time. The proposed hybrid nanogenerator provides a promising way for collecting both water wave and steam evaporation energy, effectively broadening methods for energy harvesting by TENGs.
研究领域:
能源技术
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Linlin Zhou,Tao Yang,Kang Wang,Enhui Wang,Laipan Zhu,Kuo-Chih Chou,Hailong Wang,Xinmei Hou
The flexible polyvinylidene difluoride (PVDF)/6H–SiC composite films are fabricated to overcome the natural brittleness of hexagonal SiC. Yet the electrical output of the piezoelectric nanogenerator (PENG) based on the composite film needs to be further improved. Here, PENG and hybrid nanogenerator exploiting both triboelectric and piezoelectric effects (T-PENG) based on PVDF/6H–SiC composite films are assembled. The PENG based on the PVDF/15 wt% 6H–SiC composite film shows the open circuit voltage ( V oc ) of 16.81 V. The T-PENG achieves the bridge rectified voltage of 65.70 and 136.58 V when subjected to the external force of 1.1 and 4.9 N, indicating 3.91 and 7.39 times the output of the PENG under the same force, which is the highest value compared with the reported nanogenerators based on SiC and SiC composites. This work breaks through the limitation of low mechanical energy utilization efficiency of film-based PENG and provides a feasible way to enhance the electrical output of nano power sources.
研究领域:
材料科学
·
纳米能源技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2019
·Vol. 9
·期 8
·1090
·
IF 4.034
Rui-Qiang Liu,Xiao-Xiong Wang,Jie Fu,Qian-Qian Zhang,Wei-Zhi Song,Yuan Xu,You-Qiang Chen,Seeram Ramakrishna,Yun-Ze Long
Self-powered nanogenerators composed of poly(vinylidene fluoride) (PVDF) have received much attention. Solution blow spinning (SBS) is a neoteric process for preparing nanofiber mats with high efficiency and safely, and SBS is a mature fiber-forming technology that offers many advantages over conventional electrospinning methods. Herein, we adopted the SBS method to prepare independent PVDF nanofiber membranes (NFMs), and successfully employed them as nanogenerators. Finally, we tested the change in the output current caused by mechanical compression and stretching, and studied its durability and robustness by charging the capacitor, which can drive tiny electronic devices. The results show that the PVDF nanogenerators by using this SBS equipment can not only be used in wearable electronic textiles, but are also suitable for potential applications in micro-energy harvesting equipment.Keywords:solution blow spinning;micro-energy harvesting;nanogenerators
研究领域:
材料科学
·
能源技术
✓ 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）