JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 12
·1-10
·
IF 2.8
Zheng Haoran,Yu Shihui,Bai Jinke
A scalable strategy is proposed for preparing ultra-flexible transparent heaters (THs) with ZnO-Ag core–shell nanowires (ZnO@Ag NWs) embedded in polyvinylidene fluoride composite films. The obtained THs exhibit a high average transmittance of 85.8% in the visible spectral range and excellent heating performance. The maximum saturation temperature can reach 153 °C within 10 s at an input voltage of 4.0 V. Furthermore, the saturation temperature of THs has not changed significantly after 1000 bending cycles with a curvature radius of 0.5 mm, demonstrating excellent mechanical flexibility. In particular, the THs possess environmental endurance, and no significant deterioration in performance can be found after exposure to high humidity (relative humidity: 85%) and ultraviolet ozone (254 and 185 nm) irradiation for 10 h, which is attributed to the protective role provided by the covering of ZnO shells on the Ag NWs. These outstanding parameters make the fabricated THs to be promising for application in wearable systems, medical thermotherapy pads and industrial defrosters.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yulong Liu,Huanyan Xu,Zhen Chen,Bo Li,Qian Liu,Serguei V. Savilov,Minghua Chen
Solid-state lithium metal batteries (SSLMBs) have great potential as high-energy-density, high-power, and safe energy storage devices. Solid polymer electrolytes based on polyvinylidene fluoride-poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-(PVDF-HFP)) have attracted significant attention due to their high ionic conductivity at room temperature, good flexibility, and unique ion transport properties, making them promising candidates for commercial applications. However, PVDF-based composite solid polymer electrolytes (CSPEs) exhibit poor lithium-ion transport properties and are prone to chemical reactions with the lithium metal surface, posing the risk of forming lithium dendrites. This degradation results in reduced battery performance and cycle life. This work investigates the effects of Co-doped cubic-ZrO 2-x (C-ZrO 2-x ), a filler with abundant oxygen vacancies, on the electrochemical properties of PVDF-based CSPE. Zirconium in zirconia can provide Lewis acid sites, while oxygen vacancies can adsorb TFSI − and exhibit a pronounced ability to dissociate lithium salt and accumulate anchored anions. These effects are further amplified after phase transition, from unstable monoclinic phase with a small amount of oxygen vacancies to cubic phase with abundant oxygen vacancies, leading to a higher proportion of free Li + in PVDF-based CSPE. Additionally, the uniform distribution of solid electrolyte interphase with a single LiF component, indicates that C-ZrO 2-x increases the interface stability between electrolyte and lithium metal. The corresponding Li||Li symmetrical cells show a stable cycle lifetime of 730 h at 0.1 mA cm −2 . The specific discharge capacity of Li|CSPE|LiFePO 4 reaches 106.09 mAh g −1 at 1 C. Even after 550 cycles, the capacity retention rate is still 92.13 %. These findings ideally contribute to an effective way to achieve high performance and long cycle life of solid-state lithium metal batteries.
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Materials Today Communications
·
2025
·
IF 4.5
Huilian Qiao,Maoqi Wu,Meitung Poon,Jianqiao Hu,Zeyu Jiang,Hui Yu,John H. Xin,Lihuan Wang
The ultraviolet (UV) resistance refers to the ability of materials to block, absorb, or reflect UV rays. Traditional fiber modification and fabric post-treatment techniques for UV resistance enhancement mainly focus on increasing the UV absorption rate or scattering effect, but there is still significant room for improvement. In this work, we prepared two types of Poly(vinylidene fluoride) (PVDF) fibers through the wet-spinning process: PVDF fibers with a single porous structure and PVDF fibers with added titanium dioxide (TiO₂) particle (exhibiting high UV absorption) (PVDF/TiO₂ fibers). Through the former, we explored the influence of changes in the internal porous structure of the fibers on their UV resistance. And contrast the effects and possible mechanisms of these two fibers regarding UV Resistance. We employed characterization techniques such as SEM, XPS, XRD, and Ultraviolet-Visible-Near Infrared (UV-VIS-NIR) Spectrophotometer. The experimental results show that the average UV transmittance of the two types of fibers is remarkably low(<0.3%). Analysis indicates that they achieve excellent UV resistance via different mechanisms. The porous PVDF fibers possess excellent average UV reflectivity (>80%), while the PVDF/TiO₂ fibers show exceptional UV absorptivity (>82%). There are differences in the effects and applications of UV resistance based on the principles of reflection or absorption. Consequently, the two types of fibers can be applied in diverse scenarios. Moreover, given the large - scale production characteristics of wet - spinning, these fibers hold promising market prospects.
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Scientific Reports
·
2025
·Vol. 15
·期 1
·1-11
·
IF 3.9
Dong Wentao,Li Mengyun,Chen Chang,Xie Kun,Hong Jinhua,Yang Lin
As flexible and wearable electronics play more and more important role in smart watches, smart glass and virtual reality, and the power supply to the wearable electronics have been revealed more attentions for long-term usage and continuous healthy monitoring. To overcome the challenge, flexible self-powered BTO-PVDF/PDMS piezoelectric-triboelectric electric hybrid generators (BPP-HNG) are developed to human gesture monitoring and human machine interaction (HMI) application without external power supply. BPP-HNG based on BTO-PVDF and PDMS films are prepared by sol–gel and spin-coating method. When the BTO content is 20 wt.%, BPP-HNG exhibits better electrical performance with an output voltage of 20.51 V. A real-time gesture monitoring system is designed and developed to human machine interaction, which is able to control the motion of robot finger through BPP-HNG. BPP-HNG could monitor and recognize various gestures in real time, enabling synchronization between the human hand and the robot’s hand. With the convergence of AI technology and big data, BPP-HNG based HMI technology is expected to realize the potential of smarter and more intuitive interactions.
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PubMed
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Membranes
·
2025
·Vol. 15
·期 5
·155
·
IF 3.6
Liangku Zhai,Jiuyun Cui,Lei Lu,Hailong Wang,Can Wei,Jirong Luo,Atian Xie
The simple preparation of superhydrophilic membranes with good stability is of great significance for efficient oil–water separation. In this work, a polyvinylidene fluoride (PVDF) membrane modified with tannic acid (TA) and pectin (PT) was developed through immersion in TA/PT solutions, facilitating the formation of complexes via co-deposition. The optimized PVDF@TA/PT3 membrane exhibited superhydrophilicity/superoleophobicity. The membrane achieved remarkable separation efficiencies exceeding 98.3% and fluxes ranging from 71.3 to 156.3 L m −2 h −1 for various oil–water emulsions under gravity-driven conditions. Notably, the membrane maintained exceptional durability through 10 separation cycles, retaining about 98% efficiency while exhibiting strong antifouling properties. Excellent separation performance coupled with facile fabrication protocol and chemical stability of the membrane, position the PVDF@TA/PT membrane as a technologically viable candidate for wastewater purification.
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MATERIALS LETTERS
·
2025
·
IF 2.7
Yufang Chen,Lanlan Zuo,Hang Yu,Wenjin Song,Jinhui Wang,Xianxian Shi,Peitao Xiao,Di Lu
Electrospun poly (vinylidene fluoride- co -hexafluoropropylene) (PVDF-HFP) fibrous separators with controlled crystalline orientation were successfully developed for lithium metal batteries (LMBs). The electrospun separator exhibits a well-aligned fibrous network and predominant β-phase crystallization, demonstrating significantly enhanced ionic conductivity (0.63 mS cm −1 ) and superior electrolyte wettability compared to conventional NIPS-derived separators. The unique architecture enables homogeneous lithium deposition and extends cycling stability to 700 h in Li||Li cells, while maintaining excellent rate capability with 136.3 mAh g −1 at 2C in L cells. This work provides valuable insights into designing advanced polymer separators through microstructure and crystalline phase control for high-performance energy storage applications.
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TEXTILE RESEARCH JOURNAL
·
2024
·
IF 1.6
Bo Yang,Xifeng Zhang,Jiakang Tang,Xinyu Zhu,Ming Hao,Xiaodong Hu,Yanbo Liu
The rapid development of piezoelectric sensors has been studied extensively, owing to their good flexibility, wearability, high sensitivity and low cost. However, some inorganic materials with good piezoelectricity cannot make sensors flexible, and the organic materials with good flexibility have a weak output electrical signal and low strength. In order to explore and optimize the preparation technology of piezoelectric sensors, a BaTiO3@polyacrylonitrile (PAN)/poly(vinylidene fluoride) (PVDF) nanofibrous composite membrane (NCM) was prepared by cross-electrospinning technology and the central combination design (CCD) method. The morphology, structure, hydrophobicity, mechanical properties and piezoelectricity of the BaTiO3@PAN/PVDF NCMs were investigated. The BaTiO3@PAN/PVDF NCMs had the better hydrophobicity and mechanical properties compared with the pure PAN/PVDF NCM. The 5BaTiO3@PAN/PVDF NCM designed by CCD had a more uniform fiber diameter, and a more stable output voltage with a 46% improvement. With the help of cross-electrospinning technology and the CCD method, the NCM will be outstanding for the development of fabricating flexible wearable piezoelectric sensors.
研究领域:
材料科学
·
传感器技术
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MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2022
·Vol. 223
·期 4
·2100416
·
IF 2.996
Muhua Yuan,Haijun Wang,Huihui Li,Chunlei Yuan,Tong Wang,Haibo Yang
Adding additives is the most convenient and effective way to induce polar poly(vinylidene fluoride) (PVDF) crystals which exhibit excellent ferroelectronic, piezoelectric, and dielectric properties. In this work, a kind of environmentally friendly additive, deep eutectic solvent (DES), is introduced to induce the crystallization of polar phases and accelerate the α -to- γ phase transition, which enables the fraction of γ ( γ ′)-phase crystals to exceed 90% in the PVDF/DES composite containing only 1 wt% DES. The ion–dipole interaction between PVDF and hydrogen bond acceptor in DES induces the polar molecular conformation, thus bringing about the formation of polar phase crystals. However, hydrogen bond donor promotes the dispersion of hydrogen bond acceptor in PVDF matrix, contributing to the flexibility of the composites.
研究领域:
材料科学
·
高分子化学
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Yongli Du,Yongfan Cao,Zhenzhu Cao,Liying Wang,Guorong Li
Composite solid-state electrolytes (CSEs) with high safety and flexibility are promising candidates for high-energy-density energy storage devices. However, the low ionic conductivity, low ion transference number, and poor interfacial stability of CSEs greatly reduce the electrochemical performance of lithium-ion batteries (LIBs). In this work, ZIFs with low, medium and high entropy prepared using mechanical ball grinding are introduced into polyvinylidene fluoride (PVDF) as fillers. The effect of ZIFs with different entropy on the structure, ionic conductivity of CSEs as well as electrochemical performance of cells is investigated. The CSE with high-entropy ZIF (PLL-HE) showcases optimal comprehensive properties, with mechanical strength as high as 11.2 MPa, high room-temperature ionic conductivity of 7.76 × 10 −4 S cm −1 , high ionic transference number of 0.84, and low activation energy of 0.14 eV. The Li/PLL-HE/Li symmetric cell does not experience short-circuit phenomena after cycling for 1400 h at a current density of 0.2 mA cm −2 . The LiFePO 4 /PLL-HE/Li full cell has an initial discharge specific capacity of 152.3 mA h g −1 at a rate of 0.2 C and exhibits a capacity retention rate of 99.44 % after 130 cycles. This study provides a novel strategy using high-entropy ZIF to boost CSE performance for Li-metal cells.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子化学
·
固态离子学
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Sustainable Energy & Fuels
·
2022
·Vol. 6
·期 9
·2377-2386
·
IF 6.813
Yiheng Song,Jiangkai Bao,Yang Hu,Haopeng Cai,Chuanxi Xiong,Quanling Yang,Huafeng Tian,Zhuqun Shi
In recent years, the forward polarization strategy has been developed to effectively improve the output performance of triboelectric nanogenerators (TENGs), which usually requires the addition of ferroelectric fillers and further polarization treatment. In this paper, we fabricated an all-polymer based TENG device consisting of pure nanocellulose film and ferroelectric polyvinylidene fluoride (PVDF) film without any inorganic fillers. Three different film forming processes of PVDF films and their effects on the triboelectric output performance were investigated. It was found that the oriented electrospinning PVDF film can achieve a lot of oriented dipoles in one step without further polarization treatment. These forward polarized dipoles in PVDF film led to a significant increase in surface charge density and enhanced triboelectric output performance. It outputted an open-circuit voltage of 90 V, a short-circuit current of 7.4 μA, and a power density of 0.13 W m−2, which are increased by 0.5, 2.6 and 2.2 times respectively compared with those of the random electrospinning PVDF film device with lower contents of forward polarized oriented dipoles. Furthermore, the recycling process of electrode materials showed comprehensive advantages of sustainable and cost-effective properties, which were attributed to the all-polymer based electrode layers.
研究领域:
材料科学
·
能源技术
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ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jingcheng Wu,Yi He,Liang Zhou,Xiangying Yin,Liyun Zhang,Jingyu Chen,Zhenyu Li,Yang Bai
As industrialization has spread all around the world, the problems of water pollution such as offshore oil spill and industrial sewage discharge have spread with it. Although many new separation materials have been successfully developed to deal with this crisis, a large number of water treatment materials only focus on the treatment of classified single water pollutant under mild conditions. It is a great challenge to treat soluble contaminants such as water-soluble dyes and insoluble contaminants, for example, emulsified oils simultaneously in a strong corrosive environment. Herein, in this work, corrosive resistance and multifunctional surface on a commercial polyvinylidene difluoride (PVDF) membrane via a tunicate-inspired gallic acid-assisted accurate-deposition strategy is created. Owing to the titanium–carboxylic coordination bonding and accurate-deposition strategy, the as-prepared membrane exhibits extraordinary stability, facing various harsh environmental challenges and incredibly corrosive situations (e.g., 4 M NaOH, 4 M HCl, and saturated NaCl solution). The robust multifunctional surface also endows commercial PVDF membrane with the ability for in situ separation and adsorption of surfactant-stabilized oil-in-water (corrosive and dyed) emulsions with high adsorption efficiencies up to 99.9%, separation efficiencies above 99.6%, and permeation flux as high as 15,698 ± 211 L/(m2·h·bar). Furthermore, the resultant membrane can be regenerated facilely and rapidly by flushing a small amount of HCl (4 M) or NaOH (4 M), making the corrosive resistance membrane attain a long-term and high-efficiency application for complex dyed wastewater treatment. Therefore, the multifunctional membrane has a broad application prospect in the industrial field.
研究领域:
环境科学
·
材料科学
·
化学工程
·
废水处理
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PubMed
高影响因子
ACS Applied Engineering Materials
·
2026
·
IF 3.5
Meng Zhang,Shuangxiang Li,Bin Can,Zhenhui Li,Yangda Hou,Qingche He,Yongyun Mao
Achieving both efficient mechanical energy harvesting and all-night passive luminescence in a single flexible film remains a critical challenge for self-powered smart road systems. In this work, a poly(vinylidene fluoride)/SrAl2O4:Eu2+,Dy3+ (PVDF/SAOED) composite film is fabricated by tape-casting, which integrates triboelectric nanogeneration and ultralong persistent luminescence into one flexible unit─a combination that, to the best of our knowledge, has not been previously reported for all-night passive road marking applications with both liquid–solid and solid–solid energy harvesting modes. To overcome the moisture sensitivity and poor polymer compatibility of SAOED phosphors, a silicone-resin surface coating strategy is adopted. At the optimized coating ratio, the crystal structure is well preserved, the afterglow decay to 1.36 mcd/m2 exceeds 15 h, and the luminescence loss is below 10%. A liquid–solid triboelectric nanogenerator (TENG) based on this film delivers 150 nA and 1.8 V under water droplet impact, adapting well to varying rainfall intensities. A solid–solid TENG operating at 1 Hz produces a stable voltage of about 11 V and lights up over 40 LEDs. After UV excitation, the film emits bright blue-green light with CIE coordinates nearly identical to the neat phosphor, enabling “daytime storage, nighttime glow” while harvesting energy from raindrops and footsteps. Through this coating strategy, the interfacial compatibility and luminescence retention are synergistically enhanced, and the influence of PVDF content on dielectric, mechanical, and triboelectric properties is systematically revealed. This work provides a material platform for maintenance-free, all-weather, visually interactive self-powered road marking and smart traffic facilities.
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