Study on performance of composite polymer films doped with modified molecular sieve for lithium-ion batteries

Zhang, Yuqing; Zhang, Guodong; Du, Tingdong; Zhang, Lizao

doi:10.1016/j.electacta.2010.05.022

Cited by 15 publications

(10 citation statements)

References 25 publications

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“…As more SiO 2 is added, the maximum load increases significantly, and it is increased by ∼10% at 2.5% content (11.6 N) and ∼15% at 3.5% content (12.1 N), respectively. It is believed that the porous network formed by SiO 2 and PVDF‐HFP in coated layers can restrict the motion of separator . As more SiO 2 is added, SiO 2 particles are packed more closely (as shown in Figure ) and the restriction of the layers becomes stronger.…”

Section: Resultsmentioning

confidence: 99%

Effect of SiO₂ content on performance of polypropylene separator for lithium‐ion batteries

Liu

Guo

et al. 2014

J of Applied Polymer Sci

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Composite separators are prepared by introducing SiO2 nanoparticles on both sides of polypropylene separator with various SiO2 contents through a dip‐coating process, where polyvinylidene fluoride‐hexafluoropropylene is used as binder. Coated layers have highly porous structure, which is quantitatively analyzed by air permeability. Compared to pristine separator, composite separators show significant lower Gurley value, reduced thermal shrinkage, higher liquid electrolyte uptake, better mechanical properties, and better cell performance such as discharge C‐rate capability and cycle performance. The influence of SiO2 content on these properties is also studied, and the best SiO2 content is given. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41156.

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Section: Resultsmentioning

confidence: 99%

Effect of SiO₂ content on performance of polypropylene separator for lithium‐ion batteries

Liu

Guo

et al. 2014

J of Applied Polymer Sci

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“…Compared to the uncoated separator, the load (maximum) increased by ∼10% at 8% coating gain and continues with further increase of coating. It is believed that SiO 2 particles and polymer chains in PVdF-HFP interact with each other by van der Waals force, etc., thus forming cross-linked porous structures and restricting the motion of molecular chains [55]. Thermal shrinkage of separators is another important issue pertaining to not only battery performance but also safety.…”

Section: Resultsmentioning

confidence: 99%

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Fu¹,

Luan²,

Argue³

et al. 2012

Journal of Power Sources

200

125

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. b s t r a c tThe novelty of this work is the formation and deposition of SiO 2 , as opposed to deposition using commercially available SiO 2 powder suspension in the solution, to form ceramic coating on polypropylene (PP) separators for lithium-ion battery. The formation of SiO 2 nanoparticles with uniform particle size is accomplished through direct hydrolysis of tetraethyl orthosilicate (TEOS), while the deposition of the formed SiO 2 on PP separators was conducted in the same solution containing polyvinylidene fluoridehexafluoropropylene (PVDF-HFP) as binders and acetone as the solvent. The effects of the ceramic coating on the surface morphology, tensile strength, contact angles, electrolyte uptake, thermal shrinkage of the PP separators and the cell performances such as battery rate capability and Coulombic efficiency were investigated. The coated separators show significant reduction in thermal shrinkage and improvement in tensile strength, contact angles, electrolyte uptake and battery performance as compared to the plain PP separator. Crown

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“…Subramania et al studied a novel composite micro‐porous polymer electrolyte membrane based on optimized composition of PVDF‐co‐HFP‐ZrO 2 . Zhang et al investigated molecular sieves of MCM‐41 modified with sulfated zirconia (SO 4 2− /ZrO 2 ) composite polymer films for lithium‐ion batteries. The ceramic materials used in these separators are alumina, silica, zirconia, titanium dioxide or their mixture, and their particle size is required to be of nano‐size.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of porous Al₂O₃‐PVDF composite separators and their application in lithium‐ion batteries

Wang

et al. 2013

J of Applied Polymer Sci

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In this article, a modified tape casting method is employed by dispersing and ball milling of Al 2 O 3 powders in the poly (vinylidene fluoride) polymer, with the aim of developing uniform nanocomposite separators in the lithium-ion cell system. The surface morphology, pore structure, heat-resisting property, infrared property, and cell performance of the nanocomposite separators are investigated. The experimental results indicate that ball milling plays an important role in yielding homogeneous, porous nanocomposite separator membranes. The developed separator membranes exhibit high thermal stability and excellent electrochemical performance, therefore, are promising for use in the lithium-ion cell systems.

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Study on performance of composite polymer films doped with modified molecular sieve for lithium-ion batteries

Cited by 15 publications

References 25 publications

Effect of SiO₂ content on performance of polypropylene separator for lithium‐ion batteries

Effect of SiO₂ content on performance of polypropylene separator for lithium‐ion batteries

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Synthesis of porous Al₂O₃‐PVDF composite separators and their application in lithium‐ion batteries

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Study on performance of composite polymer films doped with modified molecular sieve for lithium-ion batteries

Cited by 15 publications

References 25 publications

Effect of SiO2 content on performance of polypropylene separator for lithium‐ion batteries

Effect of SiO2 content on performance of polypropylene separator for lithium‐ion batteries

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Synthesis of porous Al2O3‐PVDF composite separators and their application in lithium‐ion batteries

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Product

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Effect of SiO₂ content on performance of polypropylene separator for lithium‐ion batteries

Effect of SiO₂ content on performance of polypropylene separator for lithium‐ion batteries

Synthesis of porous Al₂O₃‐PVDF composite separators and their application in lithium‐ion batteries