Close-packed SiO2/poly(methyl methacrylate) binary nanoparticles-coated polyethylene separators for lithium-ion batteries

Park, Jang Hoon; Cho, Joo Hyun; Park, Woong; Ryoo, Dongjo; Yoon, Seong Kuk; Kim, Jong Hun; Jeong, Yeon Uk; Lee, Sang Young

doi:10.1016/j.jpowsour.2010.06.112

Cited by 185 publications

(86 citation statements)

References 16 publications

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“…The urgent demand for flexible batteries has spurred the development of exploring mechanically compliant electrolytes. Presently, commercial lithium-ion batteries using liquid electrolyte faces serious safety problem, such as liquid electrolyte leakage and explosion [5,6]. This formidable challenge strongly stimulates research activities in exploring polymer electrolytes, which thus can offer wide-ranging of form factors and allow facile integration into cells of different sizes and shapes.…”

Section: Introductionmentioning

confidence: 99%

Compliant gel polymer electrolyte based on poly(methyl acrylate-co-acrylonitrile)/poly(vinyl alcohol) for flexible lithium-ion batteries

Huang

Gao³

et al. 2014

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Compliant gel polymer electrolyte based on poly(methyl acrylate-co-acrylonitrile)/poly(vinyl alcohol) for flexible lithium-ion batteries

Huang

Gao³

et al. 2014

Electrochimica Acta

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“…Unlike reported by others [19,26], our method provides a simplified process of coating, without having to use costly and time-consuming sonication and ball milling to suspend and distribute the nanoparticles produced by the suppliers. To our knowledge, this synthesis and deposition of SiO 2 nanoparticles in the PVDF-HFP acetone solution for separator coating is reported for the first time.…”

Section: Resultsmentioning

confidence: 98%

“…were suspended in acetone based solutions with polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP) as binders to attach the inorganic particles on the separator surface to form nanocomposite separators. Examples of such nanocomposites are characterized of SiO 2 nanoparticles embedded in a polymer matrix hence the establishment of a highly ordered nanoporous structure, reported by Park and Jeong and Lee [19,26]. The SiO 2 nanoparticles are close-packed and interconnected by organic binders (PVdF-HFP) on both sides of a PE separator.…”

Section: Introductionmentioning

confidence: 96%

“…Another recent approach was the coating of polyolefin based separators using inorganic particles due to the excellent thermal stability and wettability of inorganic particles with organic electrolytes. This approach significantly improves the thermal shrinkage and electrochemical performance of the separators [19][20][21][22][23][24][25][26]. However, in these studies, commercially available inorganic powders (such as clay, SiO 2 , Al 2 O 3 , etc.)…”

Section: Introductionmentioning

confidence: 99%

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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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“…For comparison, the thermal shrinkage of a conventional PE separator was also investigated by the same method. The results show that the PE separator is significantly shrunk and its thermal shrinkage is observed to be about 40 % due to their low melting point and internal stress produced by the multiple stretching processes [32]. In contrast, the dimensions of all electrospun membranes with different monomer feed ratios are almost unchanged after the heat treatment.…”

Section: Properties Of Electrospun P(mma-co-ampsli) Membranesmentioning

confidence: 98%

Performance enhancement induced by electrospinning of polymer electrolytes based on poly(methyl methacrylate-co-2-acrylamido-2-methylpropanesulfonic acid lithium)

et al. 2012

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A series of novel fibrous polymer electrolytes with high ionic conductivity based on electrospun poly (methyl methacrylate-co-2-acrylamido-2-methylpropanesulfonic acid lithium) (P(MMA-co-AMPSLi)) membranes were prepared and characterized. P(MMA-co-AMPSLi) was synthesized by free radical copolymerization of MMA and AMPS, followed by ion exchange of the H ? with Li ? . The fibrous polymer electrolytes were fabricated by immersing the electrospun P(MMA-co-AMPSLi) membranes into the liquid electrolyte. Fourier transform infrared spectroscopy and 1 H-nuclear magnetic resonance were used to characterize the structure of the copolymers. Thermogravimetric analysis was applied to investigate the thermal properties of the copolymers. Scanning electromicroscope was employed to observe the morphology of electrospun membranes before and after soaking the liquid electrolyte. AC impedance and linear sweep voltammetry were adopted to measure the electrochemical properties of the fibrous polymer electrolytes. The incorporation of the AMPSLi units effectively improved the electrospinnability of the copolymer, increased the dielectric constants of the electrospun membranes, and enhanced the dimensional stability by maintaining the pore structures even after the membranes absorbing large amounts of liquid electrolytes. As a result, the ionic conductivity of the polymer electrolytes increased with the increase in the molar ratio of AMPSLi units, and the highest ion conductivity was up to 4.12 9 10 -3 S cm -1 at room temperature. Meanwhile, the polymer electrolytes studied in this work exhibited a sufficient electrochemical stability (up to 5.0 V) that allows the safe operation in lithium-ion batteries.

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Close-packed SiO2/poly(methyl methacrylate) binary nanoparticles-coated polyethylene separators for lithium-ion batteries

Cited by 185 publications

References 16 publications

Compliant gel polymer electrolyte based on poly(methyl acrylate-co-acrylonitrile)/poly(vinyl alcohol) for flexible lithium-ion batteries

Compliant gel polymer electrolyte based on poly(methyl acrylate-co-acrylonitrile)/poly(vinyl alcohol) for flexible lithium-ion batteries

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

Performance enhancement induced by electrospinning of polymer electrolytes based on poly(methyl methacrylate-co-2-acrylamido-2-methylpropanesulfonic acid lithium)

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