High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

Li, Xiang; Chen, Shilin; Xia, Zilong; Li, Li; Yuan, Wenhui

doi:10.1039/d0ra02401e

Cited by 32 publications

(11 citation statements)

References 41 publications

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“…Thus, the preparation of electrospun nanofiber separators has become a hot spot for researchers. For example, Li et al prepared boehmite/polyacrylonitrile composite separators via electrospinning method, which exhibit higher porosity, greater thermal stability, and better electrochemical performance compared with the polypropylene (PP) separator 20 . Qin et al had fabricated a sandwich‐structured polyamide 6/poly(vinylidene‐co‐hexafluoropropylene)/polyamide 6 (PA6/PVDF‐HFP/PA6)‐based composite gel membrane by electrospinning.…”

Section: Introductionmentioning

confidence: 99%

Electron beam irradiation modified electrospun polyvinylidene fluoride/polyacrylonitrile fibrous separators for safe lithium‐ion batteries

Jia

Huang

Long

et al. 2020

J of Applied Polymer Sci

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This work aims to obtain more hydrophilic and thermal stable electrospun fibrous membranes for lithium‐ion battery separators. For this purpose, the polyvinylidene fluoride/polyacrylonitrile (PVDF/PAN) separators are fabricated via electrospinning and modified by an electron beam with different doses. These preparation processes are simple, fast, and environmentally friendly. As the same time, the physical and electrochemical properties of these separators are investigated in detail. The results indicated that all the irradiated PVDF/PAN (the mass ratio of PVDF and PAN is 1:1) separators can maintain a complete structure till 170°C due to their cross‐linking structure. Besides, the 150‐kGy‐irradiated PVDF/PAN separator exhibits high porosity (82%), excellent electrolyte absorption (497%), and high ionic conductivity (3.19 mS cm−1). As a consequence, the cells with 150‐kGy‐irradiated PVDF/PAN separators show better the C‐rate performance and cycling stability than those of the cells with polypropylene separators and nonirradiated PVDF/PAN separators.

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Section: Introductionmentioning

confidence: 99%

Electron beam irradiation modified electrospun polyvinylidene fluoride/polyacrylonitrile fibrous separators for safe lithium‐ion batteries

Jia

Huang

Long

et al. 2020

J of Applied Polymer Sci

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“…In comparison, the strength and elongation at break of PMMA nanofibrous membrane is 0.59 MPa and 44.1%, respectively, although wrinkled PMMA fibers reported many times. In addition, the breaking strength of nanofiber membranes reported in the literature is generally lower than 6.79 MPa, such as silk fibroin 3.91 MPa 46 and 3.45 Mpa, 47 poly (lactic acid) 0.97 Mpa, 48 polycaprolactone 2.15 Mpa, 49 polyacrylonitrile 6.51, 50 4.3 51 and 3.8 52 MPa, polystyrene 1.5 Mpa, 53 PVDF 2.2 54 and 2.97 MPa 55 (Table 3). Moreover, the nanofiber membrane reported always showed poor elongation at break, almost lower than 50% (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Scale-up fabrication of PVDF-HFP nanofibrous membrane with unique surface properties for efficient separation of oil from water

Liu

Gao

Huang

et al. 2022

Textile Research Journal

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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.

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“…However, no peaks were observed at 750 and 475 cm −1 , as suggested in a previous study. [ 35 ] This is due to the small number of doped boehmite nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Thermal Stability and Electrochemical Performance of Polyacrylonitrile/Cellulose Acetate‐Electrospun Fiber Membrane by Boehmite Nanoparticles: Application to High‐Performance Lithium‐Ion Batteries

Yang

Liang

Jia

2021

Macro Materials & Eng

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In this study, polyacrylonitrile/cellulose acetate (PAN/CA) composite nanofiber membranes with different boehmite contents are prepared by electrospinning. The physical and electrochemical properties of the composite nanofiber membrane as a separator in lithium batteries are investigated. In contrast to commercial polypropylene membrane (PP), the nanocomposite fiber membrane has a 3D network structure, higher porosity, higher thermal stability, higher electrolyte absorptivity, higher ionic conductivity, and better cycling performance. The PAN/CA composite membrane with 12 wt% boehmite has the highest ionic conductivity (1.694 mS cm−1); the specific discharge capacity is 160 mAh g−1 at 0.2 C discharge density and the highest capacity retention rate is 99.3% after 100 cycles. The cycle rate at 2 C has a higher capacity retention rate (88.75%). These results indicate that the PAN/CA/AlOOH composite nanofiber membrane can be expected to replace the commercial polyolefin membrane and behave as a high‐performance separator for lithium‐ion batteries.

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High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

Abstract: In this study, a novel boehmite/polyacrylonitrile (BM/PAN) composite nanofiber membrane was prepared using the electrospinning technique.

Cited by 32 publications

References 41 publications

Electron beam irradiation modified electrospun polyvinylidene fluoride/polyacrylonitrile fibrous separators for safe lithium‐ion batteries

Electron beam irradiation modified electrospun polyvinylidene fluoride/polyacrylonitrile fibrous separators for safe lithium‐ion batteries

Scale-up fabrication of PVDF-HFP nanofibrous membrane with unique surface properties for efficient separation of oil from water

Enhanced Thermal Stability and Electrochemical Performance of Polyacrylonitrile/Cellulose Acetate‐Electrospun Fiber Membrane by Boehmite Nanoparticles: Application to High‐Performance Lithium‐Ion Batteries

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