A phase separation method toward <scp>PPTA</scp>–polypropylene nanocomposite separator for safe lithium ion batteries

He, Longfei; Qiu, Teng; Xie, Chunjie; Tuo, Xinlin

doi:10.1002/app.46697

Cited by 27 publications

(22 citation statements)

References 17 publications

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“…However, applying polyolefin separators is limited in high performance batteries due to the two following reasons: first, their thermal stabilities are low (commercial PE and PP grades' melting point of ∼130 and ∼165 °C, respectively) resulting in the separators deformation at high current densities of the batteries' charging lead to their warming up. Separator deformation increases probability of short circuit in its assembled battery's or even though its fire and explosion . Second, polyolefin membranes' hydrophilicities are low and consequently their liquid electrolyte uptakes and wettabilities are also low resulted in their low lithium ion transport, cell capacity, and battery life cycle …”

Section: Introductionmentioning

confidence: 99%

“…Separator deformation increases probability of short circuit in its assembled battery's or even though its fire and explosion. [13][14][15] Second, polyolefin membranes' hydrophilicities are low and consequently their liquid electrolyte uptakes and wettabilities are also low resulted in their low lithium ion transport, cell capacity, and battery life cycle. 12,16…”

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Preparation of 4A zeolite coated polypropylene membrane for lithium‐ion batteries separator

Shekarian

Nasr

Mohammadi

et al. 2019

J of Applied Polymer Sci

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This study aims to improve wettability and thermal resistance of lithium‐ion batteries separators. For this purpose, a commercial polypropylene (PP) separator was coated by 4A zeolite using poly(vinylidene fluoride) as binder and effects of the separators' zeolite content was investigated. All the coated separators showed lower contact angles, higher electrolyte uptakes, and less thermal shrinkages compared to the neat commercial separator. The coated PPA8 separator (zeolite to binder ratio of 8) showed the lowest wettability (contact angle of 0°) and electrolyte uptake (270%) due to its surface porosity resulting from the zeolite particles interstitial cavities as well as their internal cavities. Also, the PPA8 separator ion conductivity was found as 2.25 mS cm−1 and C‐rate and cycling performance of its assembled battery were higher compared to those of the commercial PP separator assembled battery. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47841.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Preparation of 4A zeolite coated polypropylene membrane for lithium‐ion batteries separator

Shekarian

Nasr

Mohammadi

et al. 2019

J of Applied Polymer Sci

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“…Moreover, the electrolyte uptake is also improved from 80% to 140%, which leads to enhancing the ionic conductivity. He et al reported the simple and successive method to modify PP separator with poly‐ p ‐phenylene terephthamide (PPTA) without using any binder. The PPTA coated PP separator improves the wettability and thermal stability of pristine PP separator.…”

Section: Types Of Separatorsmentioning

confidence: 99%

“…SEM images of PPTA nanofiber coated layer on PP separator a) surface morphology, b) internal morphology, c) cross‐section view of PPTA, d) photos of PP and PPTA coated PP separators after annealing at different temperatures for 1 h,e) images of contact angle measurements, and f) mechanical strength profiles of PP and PPTA coated PP separators. Reproduced with permission . Copyright 2018, Wiley‐VCH.…”

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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“…One of the most important uses of ANFs is to prepare aramid paper. [16][17][18][19][20] Aramid paper is an essential raw material for the application of high-grade insulation and honeycombs, which strictly requires high performance of ANFs. PPTA-based ANF paper has high tensile strength, great thermal stability and excellent insulation properties.…”

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confidence: 99%