Ultrathin and Strong Electrospun Porous Fiber Separator

Pan, Jiao-Long; Zhang, Ze; Zhang, Hai; Zhu, Peipei; Wei, Junchao; Cai, Jianxin; Yu, Jeong Sik; Koratkar, Nikhil; Zhang, Youdi

doi:10.1021/acsaem.8b00855

Cited by 37 publications

(38 citation statements)

References 42 publications

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“…The modified PP separator owns a 3D porous structure with high electrolyte wettability and thermal stability, as shown in Figure d–f. Recently, Pan et al developed an ultrathin and strong porous PVDF/PE/PVDF separator anchoring with silica nanoparticles for LIBs through electrospinning. The ultrathin separator with highly porous structure improves the electrolyte uptake up to 380%, which raises the ionic conductivity to 2.5 mS cm −1 .…”

Section: Types Of Separatorsmentioning

confidence: 99%

Recent Development in Separators for High‐Temperature Lithium‐Ion Batteries

Waqas

Ali

Feng

et al. 2019

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metric tons of carbon dioxide (CO 2 ) and other pollutants per year, which accelerate global warming and major climate changes. [2] In order to mitigate these serious issues caused by fossil fuels and to compete with the energy generating devices based on fossil fuels, renewable energy sources like solar energy, wind energy, bioenergy, and geothermal energy are potential alternative power resources. However, these renewable energy resources need highly efficient energy storage devices for integrating and well distribution of energy. Rechargeable battery technology with high energy, high power density, long life cycle capability, fast cycling rate, and reasonable cost is the possible solution to store energy obtained from these renewable sources. [3] Among many rechargeable energy storage devices, lithium-ion batteries (LIBs) are the promising energy sources for integrating renewable resources and high power applications, owing to high energy density, lightweight, high flexibility, slow self-discharge rate, high rate charging capability, long battery life, and environmental benignity. [4,5] The aforementioned attractive properties of rechargeable LIBs promote its utilization in the wide range of applications like laptops, cell phones, electric vehicle, hybrid electric vehicles, renewable power stations, stationary electric power, defense arsenal, subsurface exploration, thermal reactors, and space vehicles. [6][7][8][9] From the last 30 years, rapid development has been observed in LIBs technology. Presently, LIBs hold twofold energy density as compared to the first commercial LIBs developed by Sony in 1991, but still, there are some challenges associated with LIBs that need to be solved for achieving high power density and efficient performances at high and low temperatures. Safety, cost, and enhancement in energy and power densities are the major concerns in next generation LIBs. [10][11][12] Separator is one of the important components of LIBs that is not directly involved in the electrochemical reaction, however, its properties, structure, and composition greatly influence the performance of batteries with respect to internal resistance, long cycle performances, high capacity, and safety. [13] The basic functions of the separator are to prevent the contact between anode and cathode to avoid internal short circuits, store liquid electrolyte, and permit the migration of ions during the chargedischarge process. [14][15][16] The ideal separator should possess Lithium-ion batteries (LIBs) are promising energy storage devices for integrating renewable resources and high power applications, owing to their high energy density, light weight, high flexibility, slow self-discharge rate, high rate charging capability, and long battery life. LIBs work efficiently at ambient temperatures, however, at high-temperatures, they cause serious issues due to the thermal fluctuation inside batteries during operation. The separator is a key component of batteries and is crucial for the sustainability of LIBs at high-temperatures. Th...

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Section: Types Of Separatorsmentioning

confidence: 99%

Recent Development in Separators for High‐Temperature Lithium‐Ion Batteries

Waqas

Ali

Feng

et al. 2019

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186

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“…These advantages attracted people in different fields due to their potential applications for antibacterial aspects. Recently, different fiber structures, different antibacterial materials, and different application fields have gradually been developed [ 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Electrospinning in Antibacterial Field

Chen

et al. 2021

Nanomaterials

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In recent years, electrospun nanofibers have attracted extensive attention due to their large specific surface area, high porosity, and controllable shape. Among the many applications of electrospinning, electrospun nanofibers used in fields such as tissue engineering, food packaging, and air purification often require some antibacterial properties. This paper expounds the development potential of electrospinning in the antibacterial field from four aspects: fiber morphology, antibacterial materials, antibacterial mechanism, and application fields. The effects of fiber morphology and antibacterial materials on the antibacterial activity and characteristics are first presented, then followed by a discussion of the antibacterial mechanisms and influencing factors of these materials. Typical application examples of antibacterial nanofibers are presented, which show the good prospects of electrospinning in the antibacterial field.

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“…In order to enhance the compatibility between separator and electrolyte, many methods 2,13,14 have been proposed, such as the use of high‐dielectric constant polymer materials as separators, 15–18 surface modification of polyolefin separators, 19–25 using polymer electrolytes, 26–28 and so on. Recently, ceramic NPs coating is widely used to enhance the electrolyte wettability as well as promote the thermal stability of separators 29–32 . However, the ceramic particles are easily exfoliated from the separator, because of the weak interaction between ceramic particles and polyolefin base separators, leading to decreased performance and clogged pores.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, ceramic NPs coating is widely used to enhance the electrolyte wettability as well as promote the thermal stability of separators. [29][30][31][32] However, the ceramic particles are easily exfoliated from the separator, because of the weak interaction between ceramic particles and polyolefin base separators, leading to decreased performance and clogged pores. Normally the porosity of PE commercial separator separators ranges from 40% to 60%, and the Gurley value (JIS) ranges from 200 to 400 s (listed in Table S1).…”

Section: Introductionmentioning

confidence: 99%

“…8,36 Composite separators were designed to overcome the above shortcomings via imbedding NPs (such as SiO 2 , Al 2 O 3 , TiO 2 , MgO, and ZrO 2 ) into the polymer matrix (such as polyvinylidene fluoridehexafluoropropylene [PVDF-HFP] and polyvinylpyrrolidone [PVP]) using different processing techniques (such as electrospinning and phase separation), grafting functionalized ceramic particles, or in-situ reaction to generate ceramic modified layers, and so on. 30,32,[37][38][39] In our previous work, 40 we reported the synthesis of AF/SiO 2 composite NPs based on the difference between the polymerization rate of 3-Aminophenol/formaldehyde and the hydrolysis rate of tetraethyl orthosilicate (TEOS). The AF/SiO 2 composite NPs contain plentiful polar functional groups such as NH 2 and OH, which can increase the electrolyte wettability and liquid absorption rate of the composite separator.…”

Section: Introductionmentioning

confidence: 99%

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Resin‐silica composite nanoparticle grafted polyethylene membranes for lithium ion batteries

Sun

2021

J of Applied Polymer Sci

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To avoid the peeling‐off of ceramic nanoparticles (NPs) from polyolefin membranes usually occurred in commercially available ceramic NPs coated polyolefin separators for lithium batteries, we propose a simple one‐pot in‐situ reaction method to modify commercial polyethylene (PE) separators by surface grafting 3‐Aminophenol/formaldehyde (AF)/silica (SiO2) composite NPs. The AF/SiO2 composite NPs form self‐supporting connected pores on the modified layer of the separator surface, which ensures the transportation of Li+. Moreover, the PE@AF/SiO2 separators has higher electrolyte wettability and compatibility than neat PE separators attributed to the plentiful polar functional groups in the AF/SiO2 layer and AF/SiO2 composite NPs, resulting in higher lithium ion transference number (tLi+= 0.62) and ionic conductivity (σ = 0.722 mS cm−1). More importantly, the discharge capacity, capacity retention rate and coulombic efficiency (136.2 mA h g−1, 87.9% and 99%, respectively) after 200 cycles of Li|NMC half batteries with PE@AF/SiO2 separators, are all more excellent than that with the pure PE separator (125 mA h g−1, 83.1% and 85%, respectively). Our results show that the PE@AF/SiO2 separators obtained by this modification method have higher electrochemical stability in the lithium battery system.

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Ultrathin and Strong Electrospun Porous Fiber Separator

Cited by 37 publications

References 42 publications

Recent Development in Separators for High‐Temperature Lithium‐Ion Batteries

Recent Development in Separators for High‐Temperature Lithium‐Ion Batteries

Application of Electrospinning in Antibacterial Field

Resin‐silica composite nanoparticle grafted polyethylene membranes for lithium ion batteries

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