Polyphenylene sulfide nonwoven-based composite separator with superior heat-resistance and flame retardancy for high power lithium ion battery

Luo, Dan; Chen, Meng; Xu, Jing; Yin, Xianze; Wu, Jing; Chen, Shaohua; Wang, Luoxin; Wang, Hua

doi:10.1016/j.compscitech.2018.01.023

Cited by 82 publications

(41 citation statements)

References 22 publications

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“…Two challenges of safety and limited cell performance of lithium‐ion batteries in use should be considered for their further improvement . The battery's separator dimensional stability is an important factor affecting its safety as promoting the separator dimensional stability enhances its assembled battery safety . Furthermore, as the battery is in use, its separator must easily pass Li + cations through itself.…”

Section: Introductionmentioning

confidence: 99%

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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%

“…Furthermore, as the battery is in use, its separator must easily pass Li + cations through itself. In this regard, the battery separator's high wettability in nonaqueous electrolytes is extremely important …”

Section: Introductionmentioning

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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“…This should be resulted from excellent heat resistance of PPS nonwoven, which can afford a strong skeleton for composite separators and maintain their structure integrity. [7,38] Furthermore, thermal properties of separators were estimated by TGA and displayed in Figure S5. We find that when temperature increased to 460°C, PP separator is completely decomposed, while the PPS nonwoven skeleton in the two composite separators has not begun thermolysis yet.…”

Section: Mechanical Behavior and Thermal Analysismentioning

confidence: 99%

“…[4] Gel polymer electrolyte (GPE) such as fluoropolymer and polyethylene oxide has been physically coated on nonwoven surface to improve hole structures. [7][8][9] This common modification was found to provide appropriate pore size for battery separator and afford battery with outstanding discharge performance. Nevertheless, inferior cycling performance with a sudden decrease in discharge capacity was acquired.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, inferior cycling performance with a sudden decrease in discharge capacity was acquired. [7,8] This was mainly related to the loss of overall structure of coating layer after polymer matrix experienced long term electrolyte swelling, finally leading to the occurrence of micro short circuit. [10,11] In addition, limited increase was disclosed in mechanical strength by surface coating pure polymer.…”

Section: Introductionmentioning

confidence: 99%

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Semi‐Interpenetrating Polymer Electrolyte as a Coating Layer Constructed on Polyphenylene Sulfide Nonwoven to Afford Superior Stability and Performance for Lithium‐Ion Batteries

et al. 2020

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High power lithium-ion battery (LIB) puts forward higher requirements for separator. In this study, a new composite separator (SIPN/PPS) with superior stability and improved electrochemical performance was fabricated by the construction of semi-interpenetrating polymer network (SIPN) on polyphenylene sulfide (PPS) nonwoven substrate. In SIPN, branched polyethyleneimine (PEI) was selected as crosslinking points due to multiple reactive terminal groups À NH 2. Meanwhile, PEI owned irregular topology structure, which would be beneficial to interrupt the crystallization of polymer matrix and increase electrolyte storage by swelling. Characterization results show that this designed composite separator can exhibit higher porosity, improved electrolyte wettability, enhanced electrolyte uptake and excellent electrochemical performance, thus endowing battery with superior discharge capacity even at 3 C. In addition, the introduction of SIPN is confirmed to increase mechanical strength more obviously than that of single crosslinked network reported in previous study. Meanwhile, anode current begins to be detected for SIPN/PPS composite separator under higher applied voltage (4.6 V vs Li + /Li), indicating its broader electrochemical window. Moreover, SIPN/PPS composite separator is displayed satisfactory cycling stability with higher discharge capacity retention ratio (85.3 %). Consequently, this contribution opens a new avenue for separator applied in high power LIB.

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Polymer‐Based Separators for Lithium‐Ion Batteries

Barbosa

Costa

Lanceros‐Méndez

2019

Nanomaterials for Electrochemical Energy Storage Devices

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Lithium-ion batteries stand out among the different energy storage systems, increasingly important in modern society. The separator membrane is one of the main components of battery systems, it is placed between the electrodes, represents the medium for the transfer of lithium ions and it is typically based on a polymeric membrane soaked with the electrolyte solution.This chapter focuses on the recent advances on polymer-based separators for lithium-ion batteries. It is divided by the processing techniques of the membranes, such as, solvent casting, electrospinning, surface modification and coating process. In addition, the recent advances based on natural and biopolymers are presented. Finally, the main conclusions for each membrane are presented, as well as the future trends in the area.

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Polyphenylene sulfide nonwoven-based composite separator with superior heat-resistance and flame retardancy for high power lithium ion battery

Cited by 82 publications

References 22 publications

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

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

Semi‐Interpenetrating Polymer Electrolyte as a Coating Layer Constructed on Polyphenylene Sulfide Nonwoven to Afford Superior Stability and Performance for Lithium‐Ion Batteries

Polymer‐Based Separators for Lithium‐Ion Batteries

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