Al2O3/PVdF-HFP-CMC/PE separator prepared using aqueous slurry and post-hot-pressing method for polymer lithium-ion batteries with enhanced safety

Deng, Yaoming; Song, Xiaona; Ma, Zhen; Zhang, Xinhe; Shu, Dong; Nan, Junmin

doi:10.1016/j.electacta.2016.07.016

Cited by 80 publications

(43 citation statements)

References 21 publications

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“…Moreover, it has strong hydrophilicity and a stable internal network structure. These properties can be used to improve the performance of composite films [6,7]. Sodium alginate (SA) is a type of biopolymer that is extracted from brown seaweed.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

2018

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A sodium alginate/chitosan solution was prepared by dissolving sodium alginate, chitosan, and glycerol in an acetic acid solution. This solution was then combined with a sodium carboxymethyl cellulose solution and the mixture was cast onto a glass plate and dried at a constant temperature of 60 • C. Then, a carboxymethyl cellulose/sodium alginate/chitosan composite film was obtained by immersing the film in a solution of a cross-linking agent, CaCl 2 , and air-drying the resulting material. First, the most advantageous contents of the three precursors in the casting solution were determined by a completely random design test method. Thereafter, a comprehensive orthogonal experimental design was applied to select the optimal mass ratio of the three precursors. The composite film obtained with sodium alginate, sodium carboxymethyl cellulose, and chitosan contents of 1.5%, 0.5%, and 1.5%, respectively, in the casting solution displayed excellent tensile strength, water vapor transmission rate, and elongation after fracture. Moreover, the presence of chitosan successfully inhibited the growth and reproduction of microorganisms. The composite film exhibited antibacterial rates of 95.7% ± 5.4% and 93.4% ± 4.7% against Escherichia coli and Staphylococcus aureus, respectively. Therefore, the composite film is promising for antibacterial food packaging applications.

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Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

2018

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“…The composites of organic and inorganic materials are also one solution among them. Deng et al modified PE separator with Al 2 O 3 using dual binders (PVDF‐HFP and carboxymethyl cellulose (CMC)). Hot‐pressing at 70 °C for 3 h has been applied after assembling batteries with a reported separator, which transforms PVDF‐HFP granules into the colloidal structure for robust bonding of Al 2 O 3 particles with PE substrate.…”

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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“…Among these important LIB components, the separator plays the crucial role of preventing electrical contact between the anode and cathode while allowing for fast transportation of free lithium ions in the liquid electrolyte 1‐4 . The most widely used conventional separators are polyolefin based and contain polyethylene (PE) or polypropylene, and they exhibit notable advantages such as excellent electrochemical stabilities, 6‐9 low costs, and suitable processability for mass production. However, polyolefin‐based separators are characterized by intrinsically unfavorable wettability because of their hydrophobic nature.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, surface coating methods are relatively inexpensive. However, such methods require a binder to attach functional materials onto the polyolefin separators, which decreases the energy density and increases the internal resistance owing to thickness variations and pore blocking 7,8,22,23 . Consequently, even though these surface manipulation methods provide hydrophilic functionality, they are disadvantageous in terms of mechanical properties and fabrication simplicity.…”

Section: Introductionmentioning

confidence: 99%

Surface‐modified polyethylene separator with hydrophilic property for enhancing the electrochemical performance of lithium‐ion battery

2020

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Summary The suggested surface treatment using ammonium persulfate (APS) successfully introduces hydrophilic functional groups onto the microporous structure of the polyethylene (PE) separators, leading to a high affinity toward polar liquid electrolytes without degrading the intrinsic physical properties of the separator. This improves the lithium‐ion migration and ionic conductivity of the APS‐treated separator, affording a stable cycle performance (92.5% at 90th cycle) and significantly improved rate capability (87.5% at 3 C).

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Al2O3/PVdF-HFP-CMC/PE separator prepared using aqueous slurry and post-hot-pressing method for polymer lithium-ion batteries with enhanced safety

Cited by 80 publications

References 21 publications

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

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

Surface‐modified polyethylene separator with hydrophilic property for enhancing the electrochemical performance of lithium‐ion battery

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