ACS Omega
·
2026
·
IF 5.2
Ruifeng Wang,Huangxin Cheng,Jiangnan Li,Gengzhe Shen,Yu Li,Jingmei Lyu,Zhengjian Chen
Gel polymer electrolytes typically suffer from low ionic conductivity, limited oxidative stability, and thermal runaway. Nitrate additives can be beneficial, but they are limited by poor solubility. Herein, sandwich-structured ionic liquid gel electrolyte membranes were fabricated by incorporating a polyethylene (PE) interlayer between two poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF–HFP) layers loaded with LiTFSI and 1-ethyl-3-methylimidazolium nitrate ([EMIm]NO2). The PFENE3 membrane prepared with 22.9 wt % [EMIm]NO2 shows optimal overall performance. Specifically, the PE scaffold provides robust mechanical strength (36.7 MPa). The incorporation of [EMIm]NO2 induces multiple synergistic effects: (i) increasing ionic conductivity to 5.03 × 10–4 S cm–1 at 25 °C by suppressing PVDF–HFP crystallinity; (ii) achieving a high Li+ ion transference number (0.449) by confining other charge carriers within the TFSI-[EMIm]+-NO2 hydrogen-bonding network; and (iii) the sacrificial decomposition of NO2 to form robust protective interphases on both the anode and cathode. Consequently, Li/PFENE3/Li symmetric cells demonstrated stable cycling for over 600 h at 0.3 mA cm–2. Furthermore, the Li/PFENE3/NCM622 full cell delivered an initial capacity of 170.9 mAh g–1 at 0.1 C and 159.3 mAh g–1 at 0.5 C, with 78% retention after 100 cycles, significantly outperforming [EMIm]NO2-free systems. These findings provide a viable strategy for developing high-performance and safe Li-metal batteries.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yi Zhang,Yiyuan Peng,Xiangming Li,Hao Lu,Zequn Ma
Developing flexible, metal-free membranes for efficient piezo-photocatalytic environmental remediation remains a critical challenge. Herein, an all-organic, hierarchical porous COF/PVDF-HFP composite film was fabricated via a phase inversion method. Driven by strong interfacial hydrogen bonding, the COF nanoparticles (with an optimal loading of 5 wt%) served as efficient nucleating agents, significantly enhancing the electroactive β-phase content of the PVDF-HFP matrix and boosting its piezoelectric response. Under simultaneous light and ultrasonic excitation, the optimized composite achieved a remarkable Rhodamine B degradation efficiency of 97.73% within 180 min, exhibiting a kinetic rate 2.3 times higher than that of pristine PVDF-HFP. Furthermore, it demonstrated robust broad-spectrum antibacterial efficacy (>99% sterilization) against both E. coli and S. aureus . Crucially, by integrating density functional theory (DFT) calculations with absolute band alignments (UPS) and dynamic in-situ XPS tracing, we definitively unveiled an internal electric field-driven S-scheme heterojunction mechanism. This S-scheme pathway dynamically steers charge recombination, successfully retaining highly reductive photogenerated electrons on the COF to thermodynamically favor the dominant generation of superoxide radicals (·O 2 − ) and a remarkable yield of H 2 O 2 (937.6 µM). Exhibiting exceptional structural stability over multiple cycles, this entirely metal-free composite offers a robust, sustainable paradigm for engineering high-performance piezo-photocatalytic interfaces for water purification and hygiene protection.
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Nanoscale Horizons
·
2026
·
IF 6.4
Jinjin Song,Haifan Tang,Junyun Zhang,Jiaxue Yu,Dailin Yuan,Yanqiu Zhang,Jinyang Wang,Di Pan,Weixu Tian,Jingye Jin,Jian Fang,Chenhong Lang
Respiratory acoustic signals provide a crucial insight for assessing respiratory system health and diagnosing related diseases. Flexible acoustic sensors hold promise for continuous, wearable monitoring but often face trade-offs between performance, comfort, and integration into daily textiles. Herein, we present an acoustic sensing fabric (ASF) woven from silver-plated nylon warps and PVDF-HFP nanofibrous core–shell wefts, which form piezoelectric/triboelectric units at yarn interlacing points to efficiently convert micro-amplitude vibrations into electrical signals. The optimized ASF exhibits a high output of up to 38.3 V at 170 Hz/118 dB, and shows notable sensitivity, reaching 15 mV Pa−1 at 1000 Hz/94 dB and even reaching 2.5 × 103 mV Pa−1 at 170 Hz/90–95 dB. Through systematic investigation of structural parameters, supported by laser Doppler vibrometry and finite element simulation, we elucidate how the fabric structure influences forced vibration and signal output. The ASF accurately records the directly produced respiratory sounds, the playback of pathological cardiopulmonary acoustics, and daily speech, demonstrating its capability for respiratory disease diagnosis. Moreover, it can be seamlessly integrated into common textiles using standard weaving processes. This work thus provides a practical, scalable platform for designing everyday wearable systems for applications such as respiratory monitoring, remote cardiopulmonary auscultation, and voice-assisted human–machine interfaces.
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Chenghao Zhao,Wei Wei,Zhiyi Li,Zhijun Liu
Composite solid electrolytes (CSEs) are promising alternatives to liquid electrolytes in lithium-ion batteries (LIBs). CSEs offer superior electrochemical stability, safety, and mechanical integrity. Herein, a flexible CSE film comprising aluminium-doped Li 6.28 La 3 Zr 2 Al 0.24 O 12 (LLZO – Al) and poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF – HFP) is successfully fabricated via an optimised sol-gel synthesis and solution casting method. The LLZO – Al filler, with high cubic-phase purity, effectively reduces the crystallinity of the PVDF – HFP matrix, creating continuous Li + transport pathways. The optimised composite membrane containing 15 wt% LLZO – Al (CE15%) exhibits a high room-temperature ionic conductivity of 6.1 × 10 –4 S cm –1 and a broad electrochemical stability window up to 4.8 V vs. Li/Li + . Additionally, it demonstrates excellent mechanical flexibility (elongation at break: 162%) and enhanced thermal resistance. The Li/CE15%/Li symmetric cell maintains stable cycling for over 2000 h at 0.1 mA cm –2 , confirming outstanding interfacial stability. Furthermore, the LFP/CE15%/Li full cell delivers an initial discharge capacity of 166.1 mAh g –1 at 0.1 C and retains 86% of its capacity after 300 cycles. These results highlight the great potential of LLZO–Al/PVDF–HFP/LiTFSI composite electrolytes for high-performance solid-state Li-ion batteries.
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高影响因子
Nanoscale
·
2025
·
IF 5.1
Yuanxiang Xiao,Weishi Zheng,Jibiao Guan,Yingyao Chen,Runxin Chen,Yini Zhao,Shuangfei Xiang
Radiative cooling offers a sustainable thermal management strategy for personal cooling under extreme solar exposure. Herein, a surface-engineered radiative cooling fabric (PHB-4%) was developed utilizing a simple electrospinning technique. The PHB-4% strategically integrates two-dimensional boron nitride nanosheets (BNNS) with high refractive index as photon scattering centers within polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) nanofibers. Through synergistic optimization of hierarchical micro-nano porous architectures and BNNS-enhanced photon scattering, the engineered PHB-4% achieves 94 % solar reflectivity and 91.5 % mid-infrared (MIR) emissivity, enabling a sub-ambient cooling effect of 5 °C under 824.4 W·m⁻² solar irradiation. Remarkably, the PHB fabric maintains 92 % reflectivity after extended ultraviolet exposure (60 days) and repeated laundering (100 cycles), outperforming conventional cooling textiles. The inherent hydrophobicity of PVDF-HFP further endows the PHB-4% with antifouling capabilities and contamination resistance. Besides, the evaluation of basic properties confirms preserved flexibility, adequate breathability, and sufficient mechanical durability for wearable applications. This multifunctional cooling textile platform establishes new possibilities for sustainable personal thermal regulation and energy-efficient outdoor thermal management systems.
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PubMed
高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Huihui Gan,Jiajun Sun,Ye Xia,Pengyuan Qiu,Liang Li,Wen Zhu
A composite solid polymer electrolyte (CSPE) is the best candidate in all-solid-state lithium metal batteries because of its flexibility, high safety, wide electrochemical stability, relatively high ionic conductivity, and excellent compatibility with the lithium metal. In this work, the garnet-type Li6.75La3Zr1.75Ta0.25O12 (LLZTO) is introduced into a poly(ethylene oxide) (PEO)/poly(vinylidene fluoride–hexafluoropropylene) (PVDF–HFP)-based CSPE (PEO/PVDF–HFP/LLZTO CSPE). The PEO/PVDF–HFP/LLZTO CSPE possesses a high lithium-ion transference number of 0.47, a high ionic conductivity of 2.65 × 10–4 S cm–1, a wide electrochemical window of 5.55 V vs Li+/Li, and effective inhibition of lithium dendrite growth for 1000 h with a current density of 0.10 mA cm–2. Furthermore, the Li//LiFePO4 cell assembled with the PEO/PVDF–HFP/LLZTO CSPE delivers superior rate capability and good cycling stability. Therefore, the PEO/PVDF–HFP/LLZTO CSPE is a very promising candidate for high-performance all-solid-state lithium metal batteries.
研究领域:
材料科学
·
电化学
·
储能技术
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高分子科学
·
锂电池
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Xiaoxue Liao,Wenxi Hu,Jiaqing Su,Sha Cheng,Cheng Huang,Shihan Hu,Zhuowei Wang,Xiao Chen,Chunxia Zhao,Pengchao Zhang
Developing gel polymer electrolytes (GPEs) is a promising strategy to mitigate safety concerns caused by the leakage of liquid electrolytes in lithium metal batteries (LMBs). However, fabricating a membrane with high thermal stability, whose derived GPE also maintains good electrochemical performance, remains a major challenge. Herein, we report a composite membrane, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/poly(m-phenylene isophthalamide) (PMIA), with excellent thermal stability and uniform nanoporous structure for high-performance GPE of LMBs. The PVDF-HFP/PMIA composite membrane, featuring a uniform pore size of 110 nm, is prepared by a double-sided solvent–nonsolvent exchange process via microfluidic technique. The incorporation of PMIA achieves the enhanced heat resistance of the composite membrane with a superior size retention of 86% after continuous heating at 250 °C for more than 360 min. The PVDF-HFP/PMIA GPEs-based Li||Li symmetric cells display stable voltage across various current densities and cycles for 600 h at 0.5 mA cm–2. Moreover, the morphology of the lithium anodes after 100 h shows uniform lithium deposition, demonstrating excellent suppression of lithium dendrite growth. The Li||LFP cells assembled with PVDF-HFP/PMIA-based GPEs deliver a high discharge capacity of 134.5 mAh g–1 at 5 C. The as-prepared heat-resistant GPEs membrane thus offers great potential for improving the safety performance of LMBs.
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PubMed
高影响因子
Particuology
·
2024
·
IF 4.1
Sijia Wang,Liang He,Mengting Wang,Xingtong Guo,Xiangyun Qiu,Shoudong Xu,Petr Senin,Ting Bian,Tao Wei
For all-solid-state lithium batteries (ASSLBs), polymer-blended solid composite electrolytes (SCEs) have drawn wide interest owing to their significance in improving the interfacial solid-solid contacts and inhibiting the growth of lithium dendrites . In this work, SCEs based on PVDF-HFP/PMMA matrix containing MOFs (NH 2 -MIL-53(Al)) and LiTFSI were designed and synthesized employing an easy solution casting method. The synthesized samples were examined by XRD , SEM, EDS , and electrochemical tests. It was found that MPP-2 SCE not only has excellent ionic conductivity at 60 °C of 5.54 × 10 −4 S cm −1 , but also exhibits superior interfacial compatibility in Li||Li symmetric batteries , which can constantly cycle for about 800 h at 0.1 mA cm −2 with no short-circuiting. The assembled Li|MPP-2|LiFePO 4 cell exhibited a first discharge specific capacity of up to 157.1 mAh g −1 at 60 °C and 0.2 C. This work may help to further advance the progress of ASSLBs in the future.
研究领域:
材料科学
·
电化学
·
能源存储
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高影响因子
POLYMER INTERNATIONAL
·
2023
·Vol. 72
·期 8
·704-710
·
IF 3.2
Dong Wang,Pengxuan Zheng,Zhiwei Yu,Xiangwei Wang,Tingxi Li
Polymer electrolytes are being considered as an effective solution for electrochemical devices to replace currently used organic liquid electrolytes due to their excellent mechanical properties and security. Herein, we prepared stretchable polymer electrolytes (SPEs) doped with poly[(2-acrylamido-2-methylpropanesulfonic acid)- co -poly(ethylene glycol) dimethacrylate] (P(AMPS- co -PEGMA)) and enhanced with poly[(vinylidene fluoride)- co -hexafluoropropylene] (PVDF-HFP), through UV in situ polymerization. The SPEs showed good mechanical performance with an elongation of more than 40% and ionic conductivity reaching the order of 10 −3 S cm −1 . In terms of application, flexible electrochromic devices based on the UV in situ -prepared SPEs were assembled, the color switching performance being still good even after 400 switching cycles and 1000 bending cycles, which indicated that the SPEs could have excellent prospects in application for flexible devices. © 2023 Society of Industrial Chemistry.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jiangchao Chen,Guisheng Zhu,Kunpeng Jiang,Huarui Xu,Yunyun Zhao,Hu Wang,Pengfei Pang,Yiran Bai,Peipei Wang,Haining Wu
Safety concerns such as lithium dendrite growth, leakage and volatilization regularly plague conventional liquid lithium metal batteries. However, solid polymer electrolytes can mitigate these issues due to their chemical and electrochemical stability. In this paper, we show that the construction of porous structures gives PVDF-HFP based polymers excellent solution retention, quick Li + transport channels, and ultra-long Li-symmetric cycle stability. PVDF-HFP based electrolyte membrane with porous structure exhibits excellent electrolyte retention (129.5 %) and superior ionic conductivity (2.4 × 10 -3 S cm −1 at 20 ℃). In addition, Lithium-symmetric half battery uses the DPH250 porous electrolyte film to stably last more than 2000 h during the lithium plating/stripping process. DI regulation of PVDF-HFP electrolyte membrane is beneficial to achieve uniform lithium deposition, and better solve the interface problems existing in solid state batteries. LiFePO 4 /DPH250-LiPF 6 /Li batteries exhibit stable cycling performance and reversible specific discharge capacity, suggesting a potential strategy for stabilizing lithium metal batteries.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xiaobo Hu,Yanqiao Xu,Jiancheng Wang,Jiaxin Ma,Lianjun Wang,Wan Jiang
CsPbX 3 (X = Cl, Br, I) perovskite nanocrystals (NCs) are emerging as promising candidates for fluorescence sensors due to their superior optoelectronic properties. However, the poor stability restricts their practical applications in aqueous fluorescent detection. Herein, we report in-situ encapsulation of CsPbX 3 NCs into uniform PVDF-HFP/PS polymer nanofibers with fine diameter of only 49.9 ± 2.2 nm by one-step electrospinning process. The as-fabricated CsPbX 3 @PVDF-HFP/PS nanofibers exhibit high photoluminescence quantum yield (PLQY) of 90%, tunable emission wavelength covering the whole visible range of 451.5–650.8 nm. Most importantly, the water stability of nanofiber membranes can be significantly improved by introducing the 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (PFDTMS) as hydrophobic additives, in which their PL intensity can retain 88% initial value after water immersion for up to 100 days. The universality of this fabrication strategy for the stable nanofibers is demonstrated by utilizing different types of polymers and perfluorosilanes (PFSs). Taking advantage of excellent optical properties, fine diameter and high hydrophobicity of PFDTMS-modified CsPbBr 3 @PVDF-HFP/PS nanofibers, the detection for rhodamine 6G (R6G) and rhodamine B (RhB) in aqueous solution with maximum fluorescence resonance energy transfer (FRET) efficiency up to 80.9% and 69.7% are realized, respectively. Notably, these electrospun nanofiber membranes possess outstanding durability and recyclability, indicating their great potential in multifunctional photoelectric applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Ru Wang,Xiaoyu Xie,Chunxiang Xu,Yi Lin,Daotong You,Jinping Chen,Zhuxin Li,Zengliang Shi,Qiannan Cui,Mingliang Wang
Piezoelectric field engineering has been recently proved to restrain the photogenerated carrier recombination both in the bulk and on the surface of photocatalyst. Herein, we proposed a bi-piezoelectric ZnO nanorods (NR)/PVDF-HFP spongy film that can utilize water flow vibration to boost the photocatalytic degradation of organic dye. The composite photocatalyst can be deformed by water flow to generate an integrated piezoelectric field from PVDF-HFP and ZnO NR , which can considerably drive the separation and transfer of photogenerated charge carriers in ZnO NR. As a result, the ZnO NR/PVDF-HFP spongy film shows a ∼ 3 fold increase in reaction rate constant of degrading methyl orange (MO) with irradiation as flow speed increases from 200 rpm to 1000 rpm. A model about the bi-piezoelectric effect of ZnO NR/PVDF-HFP was configurated according to a series of characterization by piezoelectric force microscopy (PFM) and photoluminescence (PL). This work demonstrates the contribution of the bi-piezoelectric effect to photocatalytic water decontamination and provides a promising strategy to use dual-sustainable energy— solar and water energy.
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高影响因子
危险品化学品经营许可证（带存储）