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.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
TEXTILE RESEARCH JOURNAL
·
2022
·
IF 2.455
Zhi Liu,Bing Gao,Xiaohai Huang,Huizhen Ke,Jin Xu
Herein, the unique wrinkled surface of polyvinylidene fluoride-hexafluoropropylene nanofibrous membrane was well developed by a one-step fabrication method just by adjusting the ratio of binary solvent and humidity. The well-tailored process was proposed complying with the evolutionary mechanism that a different volatilization temperature of binary solvent provides buffer time for the formation of a polymer/solvent-rich phase, subsequently water vapor solidifies the polymer jet, forming the unique surface on the resultant nanofiber. The intrinsic wrinkled surface structure enhances the roughness and endows the membrane with robust superhydrophobic characteristics. Meanwhile, the excellent mechanical property (stress at break 6.79 MPa, strain at break 136.8%) widens its applicability in industrial employment. Furthermore, the synthesized membrane exhibits stable results in oil–water separation in terms of good separation efficiency (>99.6%) and flux (>1100 l/m2h). This is a general approach for the synthesis of many other materials at lower cost and holds a great potential to be employed in practical engineering applications beyond the oil–water separation.
研究领域:
材料科学
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环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 42
·425601
·
IF 3.953
Wenwu Jiang,Yi Han,Yanhuai Ding
Electrospun PAN/PVdF-HFP membranes have the potential to be used as separators for Li-ion batteries owing to their good mechanical properties and high chemical stability. However, the application of PAN/PVdF-HFP separators has been hampered by their poor electrochemical performances. In this study, semi-aligned PAN/PVdF-HFP nanofiber separators have been fabricated by an electrospinning technology. Sepiolite and ZIF-67 co-modification was employed to enhance the physical properties of the PAN/PVdF-HFP separators. The test cells with the as-prepared composite separator showed better electrochemical performance than the commercial and raw PAN/PVdF-HFP separators.
研究领域:
材料科学
·
能源存储
·
纳米技术
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2025
·
IF 11.6
Xiaoxiao Yu,Yu Zhang,Xiaolei Nie,Wei Song,Lisha Chen,Haotian Li,Wanting Zhu,Danqi He,Mingrui Liu,Ping Wei,Wenyu Zhao,Qingjie Zhang
High infrared emissivity and excellent thermal conduction capability are crucial for the heat dissipation performance of heat dissipation coatings, which are applicable in the thermal management of modern electronic components. Herein, SiC nanowires/Edge-oxidized graphene/polyvinylidene fluoride hexafluoropropylene (SiC NWs/EOG/PVDF-HFP) composite coatings with three-dimensional thermal conductivity network structure were successfully prepared by the in-situ growth of SiC NWs between EOG layers through high-temperature carbothermal reduction reaction. The out-of-plane thermal diffusivity of the SiC NWs/EOG/PVDF-HFP composite coating was increased by 27 %, as compared with that of the EOG/PVDF-HFP coating, which was originating from the enhanced phonon conduction in the vertical direction by the in-situ growth of SiC NWs. The stacking faults and twin crystals generated by SiC NWs, the structural defects introduced by EOG, and the multi-scale surfaces and interfaces introduced by EOG and SiC NWs have jointly improved the infrared emissivity, enabling the SiC NWs/EOG/PVDF-HFP composite coating achieved an emissivity of 0.92. The copper plate coated with SiC NWs/EOG/PVDF-HFP coating achieved a temperature drop benefit of 9.3 °C, increasing by 126 %, 93 % and 78 %, respectively, as compared with that of the copper plate coated with EOG/PVDF-HFP coating, the copper plate coated with mechanically compounded SiC/EOG/PVDF-HFP coating, and the copper plate coated with mechanically compounded SiC NWs-EOG/PVDF-HFP coating. These findings highlight the great potential of the SiC NWs/EOG/PVDF-HFP composite coatings for application in the thermal management of electronic devices.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Wenlong Ma,Tianxu Hao,Xinya Wang,Wei Zhang,Yonggui Li,Mingxing Chen
In this paper, a high-performance composite nanofiber membrane with excellent air filtration and dye degradation properties was prepared by incorporating MIL-53(Fe) nanoparticles into the electrospinning solution. The results showed that the filtration efficiency for PM2.5 of the PP/PVDF-HFP/MIL-53(Fe) composite nanofiber membrane reached up to 99.3% with the addition of 2 wt% MIL-53(Fe). Moreover, the composite nanofiber membrane exhibited steady filtration efficiency across different parameters, including air velocity, PM2.5 concentration, and extended testing time. Furthermore, the incorporation of MIL-53(Fe) significantly enhanced the removal efficiency of the composite nanofiber membrane toward Rh B, resulting in a remarkable 91% removal rate. The polymer/MOF composite nanofiber membranes prepared by simple and cheap electrospinning technology have a wide range of practical applications in the field of environmental protection. Highlights PPM composite nanofiber membrane was prepared via electrospinning method. MIL-53(Fe) nanoparticles were introduced to PPM composite nanofiber membrane. PPM composite nanofiber membrane showed excellent removal efficiency for PM2.5. PPM composite nanofiber showed a good removal performance for RhB in solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 8
·4280-4291
·
IF 11.9
Ya Liu,Wangshu Tong,Wanting Song,Tingting Cao,Yulun Liu,Lingchao Wang,Zhihao Wang,Yihe Zhang
Piezocatalysis can be used to harvest widely existing and renewable mechanical vibrations in the environment to convert mechanical energy into chemical energy, which is employed in various important applications, and typically, the polyvinylidene fluoride (PVDF)/graphene composite piezocatalyst is used because of its recyclability, flexibility, and easy preparation. However, its poor piezocatalytic performance, primarily attributed to the wrapped graphene in the PVDF matrix that prevents the generated charges from fully accessing pollutants, remains a challenge. Herein, we use phase conversion and the “self-assembly strategy” to prepare a sandwich film called PVDF-hexafluoropropylene@reduced graphene oxide (PVDF-HFP@rGO) with PVDF-HFP as the interlayer and rGO as the outer layer to fully expose rGO. Under magnetic stirring at 600 rpm, the degradation efficiency of PVDF-HFP@rGO toward methylene blue reaches ∼98% within 60 min, higher than those of the traditional composite film (∼75%) and pure PVDF-HFP film (∼8.0%). The charge supply by rGO, piezoelectric field provision by PVDF-HFP, and advantage of the sandwich structure are verified through contrast experiments under different conditions such as changing rGO band structures, varying PVDF-HFP interlayer thicknesses, and using different layer structures, respectively. Therefore, the enhanced piezocatalytic performance of the sandwich structure provides new insights into the structural design of high-performance PVDF/graphene composite piezocatalysts.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 7
·9480-9487
·
IF 9.9
Huang Ruling,Xu Ruochen,Zhang Jiangtao,Wang Jiayun,Zhou Tianyi,Liu Mingyi,Wang Xiaolong
Gel polymer electrolytes (GPEs) have attracted extensive attention in lithium-ion batteries due to their high security and excellent electrochemical performance. However, their inferior Li-ion transference number, low room-temperature ionic conductivity, and poor long cycle stability raise challenges in practical applications. Herein, a flexible poly(vinylidene fluoride-co-hexafluoropropylene)-butanedinitrile (PVDF-HFP-SN)-based GPE (PSGPE) is synthesized successfully by a general immersion precipitation method. The resultant PSGPEs have numerous connecting pores to ensure sufficient space for liquid electrolytes. Moreover, the reduced crystallinity of PVDF-HFP and the high polarity of SN can reduce the energy barrier of Li-ions shuttling between pores. The synergistic effect possesses a high ionic conductivity of 1.35 mS·cm −1 at room temperature with a high Li-ion transference number of 0.69. The PVDF-HFP-SN-based GPE is applied in a LiFePO 4 /graphite battery, which can realize stable cycling performance for 350 cycles and good rate performance at room temperature. These results demonstrate that the novel PSGPE possesses advantage in simplified production process, which can improve the practicability of gel polymer lithium-ion batteries.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Jingying Guo,Zhenyi Zhang,Xiaoli Lu,Yi Zhang,Jianchuan Wang,Zidong Wei
Gel polymer electrolytes (GPEs) have become a viable substitute for liquid electrolytes (LEs) in lithium metal batteries (LMBs) for their excellent ionic conductivity and enhanced interfacial compatibility. However, as semisolid electrolytes, GPEs face significant challenges, including low mechanical strength and flammability. Herein, we fabricate a porous poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) mat (PHL) enriched with oxide ceramics as a support matrix, and fluorine-rich compounds are incorporated by in situ polymerization to construct a flame-retardant cross-linked GPE network with improved interfacial compatibility. The PHL-based GPE (PHL-GPE) exhibits ultralong cycling stability of over 2000 h with lithium metal. When applying Li|PHL-GPE|LiFePO4 (LFP) cells, the PHL-GPE enables stable cycling for over 500 cycles with a capacity retention of 92.3% under high current density (1C) and high active material mass loading (11.25 mg cm–2). This study provides an approach to address key challenges in the commercialization of LMBs.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Technology
·
2020
·Vol. 8
·期 9
·2000444
·
IF 3.404
Xilai Xue,Xiangxin Zhang,Yongchuan Liu,Sujing Chen,Yuanqiang Chen,Junhong Lin,Yining Zhang
Solid-state poly(ethylene oxide) (PEO) electrolyte exhibits a low ionic conductivity at ambient conditions, and large interfacial resistance between PEO and electrodes obstructs its applications in lithium metal batteries. Heterogeneous solid electrolytes (HSEs) are an alluring solution for the exploitation of PEO. Herein, PEO/poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/micron-sized Li 1.4 Al 0.4 Ti 1.6 (PO 4 ) 3 (LATP) heterogeneous solid electrolytes are originally prepared to decrease the crystallinity of PEO and interfacial resistance between HSEs and electrodes. Heterogeneous solid electrolyte composed of PEO/PVDF-HFP/5% micron-sized LATP (PPL-5) exhibits superior electrochemical properties in ionic conductivity (3.01 × 10 −5 S cm −1 ), lithium transference number (0.55) at 30 °C, and a broad potential window (5.31 V). Li/PPL-5/Li symmetric cell displays a relatively stable potential response during 800 h cycling, authenticating long-term compatibility between the as-prepared electrolyte and lithium metal. LiFePO 4 (LFP) is used as a cathode to test the chemical and electrochemical stability of PPL-5. The discharge capacity of LFP/PPL-5/Li coin cell maintains 97.9 mAh g −1 at 0.8 C after 500 cycles with capacity retention of 86.7%. Such excellent performance of PPL-5 can be ascribed to the reduction of crystallinity of PEO and the improvement of the interfacial contact between electrolyte and electrodes, when PVDF-HFP and micron-sized LATP are simultaneously incorporated with PEO electrolyte.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
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.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Rong-Ao Tong,Linhui Chen,Bingbing Fan,Gang Shao,Ruiping Liu,Chang-An Wang
All solid-state lithium metal batteries are viewed as a potential next-generation energy storage technology due to their high energy density and better safety performance. The study on solid-state electrolytes (SSE) is of crucial importance for the development of technology in this field. Here, we develop a solvent-free preparation and matrix modification process for all-solid-state composite electrolytes (CSEs) based on the blended PVDF-HFP/PEO polymer matrix, and systematically study the effects of the solvent-free process on their properties. The results show that the solvent-free PVDF-HFP/PEO/10 wt % LLZTO solid-state electrolytes (1:1 mass ratio blended polymer matrix) combine the electrochemical and mechanical advantages of both polymers, thus-prepared electrolytes perform excellent tensile strength and ductility (over 500% strain for polymer matrix as well as 170% strain and 4.78 MPa strength for CSEs), and the ionic conductivity can reach ∼6.2 × 10–4 S·cm–1 at 80 °C. At the same time, the electrochemical stability and cycle stability of the electrolytes are enhanced due to the optimized process. The discoloration reaction of PVDF-HFP in composite electrolytes is further studied in this work as well. In addition to excellent performance, the simple process based on the solvent-free method also lays the foundation for scale-up production.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
DOI
高影响因子
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.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子物理
·
纳米纤维技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）