Characteristics of electrospun PVDF/SiO2 composite nanofiber membranes as polymer electrolyte

Kim, Young‐Jin; Ahn, Chang Hyun; Lee, Myung Bok; Choi, Myung–Seok

doi:10.1016/j.matchemphys.2011.01.046

Cited by 181 publications

(72 citation statements)

References 26 publications

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“…metal oxide). [22][23][24][25] It was also found that the addition of metal oxide nanoparticles, besides improving membrane mechanical properties, can * Electrochemical Society Active Member.…”

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confidence: 99%

Effect of Silica and Tin Oxide Nanoparticles on Properties of Nanofibrous Electrospun Separators

Zaccaria

Fabiani

Cannucciari

et al. 2015

J. Electrochem. Soc.

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Innovative separators able to improve the performance and safety of Li-ion batteries are under investigation to meet the growing demand for large-size and high energy density electrochemical cells. In this work, highly porous nanofibrous Poly(vinylidene fluoride) (PVdF) separators loaded with oxide nanoparticles were produced by electrospinning. Silicon oxide and tin oxide nanoparticles were added to PVdF and membranes were characterized by SEM-EDS and TGA. The effect of nanoparticle addition on electrolyte uptake, mechanical properties and conductivity was investigated and such properties were compared to those of a commercial separator (Celgard 2400). Results showed that a small amount of additive can significantly improve the properties of PVdF electrospun membranes and that the different nanoparticles investigated in this work have different effect on membrane performances. In particular, the addition of SiO 2 increases the rate of electrolyte uptake and the toughness of the electrospun membrane, while the addition of SnO 2 decreases the rate of electrolyte uptake and increases the stiffness of the electrospun membrane. When loaded with nanoparticles, PVdF membranes maintain their insulating character also at high temperature. Nowadays, lithium-ion batteries control electronic device market (e.g. laptops, mobile phones, cameras) due to their high energy density, high efficiency and long cycle life. However, a breakthrough is needed in order to fulfil new requirements of hybrid and electric vehicles and energy storage devices, in terms of costs, better electrochemical performances and safety.

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confidence: 99%

Effect of Silica and Tin Oxide Nanoparticles on Properties of Nanofibrous Electrospun Separators

Zaccaria

Fabiani

Cannucciari

et al. 2015

J. Electrochem. Soc.

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“…Among the three phases, the liquid electrolyte phase and the swollen polymer phase are main paths for the ion conduction. The former is a fast path for ion transport and the latter is a slow one, so the pore structures in membranes become very important for obtaining fast transport channel of ionic conduction [33]. In this work, the increase of AMPSLi content in copolymer decreases the swollen degree of the fibers and remains the pore structure of fibrous membranes, which can help the membranes entrap more liquid electrolyte (as shown in Fig.…”

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

confidence: 83%

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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“…Thus, various applications of 1-D electrospun nanofibres, including fuel cell electrodes [32,33], adsorption [34][35][36][37], sensors [38], electrolytes [39], battery separators [40] and bone regeneration [41,42], have been investigated in the literature. One-dimensional electrospun nanofibrous membranes demonstrate great potential for CO 2 absorption in membrane contactor applications due to their high porosities and surface areas.…”

Section: Introductionmentioning

confidence: 99%

Reusable fluorocarbon-modified electrospun PDMS/PVDF nanofibrous membranes with excellent CO 2 absorption performance

Lin

Hsu

et al. 2016

Chemical Engineering Journal

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Characteristics of electrospun PVDF/SiO2 composite nanofiber membranes as polymer electrolyte

Cited by 181 publications

References 26 publications

Effect of Silica and Tin Oxide Nanoparticles on Properties of Nanofibrous Electrospun Separators

Effect of Silica and Tin Oxide Nanoparticles on Properties of Nanofibrous Electrospun Separators

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

Reusable fluorocarbon-modified electrospun PDMS/PVDF nanofibrous membranes with excellent CO 2 absorption performance

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