Zeolite coated polypropylene separators with tunable surface properties for lithium-ion batteries

Dong, Xueliang; Mi, Wanliang; Yu, Linghui; Yi, Jin; Lin, Yun-Huin

doi:10.1016/j.micromeso.2016.02.006

Cited by 57 publications

(34 citation statements)

References 51 publications

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“…As Dong et al ., Liao et al ., and Yu et al . were reported, it is expected that coating heat‐resistant materials on the PP separators protect them from high thermal shrinkages.…”

Section: Resultsmentioning

confidence: 94%

“…As it can be observed, the separators hydrophilicity increased as their coated layer 4A zeolite content increased. The same results were reported for other materials such as ZSM5, Al 2 O 3 , and SiO 2 coating on the neat PP substrate.…”

Section: Resultsmentioning

confidence: 99%

“…Another modification method of the polyolefin separators is to coat them with inorganic and/or organic particles . Various types inorganic materials including different zeolites [melt flow index (MFI) and NaA] have been coated on different polymeric membranes. Zeolites as available proper inorganic materials have many advantages such as high surface area, high thermal and mechanical strength, and tunable surface and chemical properties (e.g., hydrophobicity/hydrophilicity or basicity/acidity) dedicated them extensive applications include commercial available separators' coating to improve their almost all properties to be used as the batteries separator …”

Section: Introductionmentioning

confidence: 99%

“…coated thin layer of MFI zeolite with different Si/Al ratios on both sides of a commercial PP membrane and employed them as the lithium‐ion batteries separator. They reported that the separator electrolyte wettability decreased as the Si/Al ratio increased and their MFI zeolite (Si/Al ratio of 25) coated PP membrane revealed considerable improvement in its electrolyte wettability . Xiao et al .…”

Section: Introductionmentioning

confidence: 99%

“…Until now, effect of MFI zeolite coating on commercial PP membranes using PVDF and PVA as binders on its performance as lithium‐ion battery separators have been studied and some improved results were reported. Zeolite 4A is a proper inorganic material, which has desired properties for coating of commercial available separators .…”

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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“…As Dong et al ., Liao et al ., and Yu et al . were reported, it is expected that coating heat‐resistant materials on the PP separators protect them from high thermal shrinkages.…”

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

Mong

Shi

Jeon

et al. 2020

Adv Funct Materials

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Recently, stringent requirements brought on by environmental regulations and safety issues are driving the development of solid electrolytes to replace conventional liquid electrolyte systems for lithium‐based secondary batteries (LiBs). However, the low Li‐ion conductivity and/or poor mechanical properties of electrolytes remain the main obstacles hindering their commercialization. Hierarchitectural and composite polymer separators (CPSs) based on electrolyte membranes have been reported as promising tools for both high ionic conductivity and mechanical stability. In light of such work, the new types of flexible electrolytes based on phase‐separated and mixed‐phase morphologies achieved via self‐assembly and the use of functional molecular composites are reviewed along with the fundamental mechanisms associated with such systems. In particular, the structure and morphology, ionic conductivity, thermal/mechanical stability, and fabrication of polymer electrolytes are introduced. Additionally, recent advancements in CPSs including methods of ensuring low interfacial resistance, the respective contributions of these critical factors to the significant functional properties of CPSs, and directions for development and essential applications in the field of CPSs for LiBs are presented. Based on previous works, the perspectives put forth will aid in the design of advanced electrolytes for practical Li secondary batteries in the near future.

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Flexible, High‐Wettability and Fire‐Resistant Separators Based on Hydroxyapatite Nanowires for Advanced Lithium‐Ion Batteries

et al. 2017

Advanced Materials

331

201

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Separators play a pivotal role in the electrochemical performance and safety of lithium-ion batteries (LIBs). The commercial microporous polyolefin-based separators often suffer from inferior electrolyte wettability, low thermal stability, and severe safety concerns. Herein, a novel kind of highly flexible and porous separator based on hydroxyapatite nanowires (HAP NWs) with excellent thermal stability, fire resistance, and superior electrolyte wettability is reported. A hierarchical cross-linked network structure forms between HAP NWs and cellulose fibers (CFs) via hybridization, which endows the separator with high flexibility and robust mechanical strength. The high thermal stability of HAP NW networks enables the separator to preserve its structural integrity at temperatures as high as 700 °C, and the fire-resistant property of HAP NWs ensures high safety of the battery. In particular, benefiting from its unique composition and highly porous structure, the as-prepared HAP/CF separator exhibits near zero contact angle with the liquid electrolyte and high electrolyte uptake of 253%, indicating superior electrolyte wettability compared with the commercial polyolefin separator. The as-prepared HAP/CF separator has unique advantages of superior electrolyte wettability, mechanical robustness, high thermal stability, and fire resistance, thus, is promising as a new kind of separator for advanced LIBs with enhanced performance and high safety.

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Zeolite coated polypropylene separators with tunable surface properties for lithium-ion batteries

Cited by 57 publications

References 51 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

Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

Flexible, High‐Wettability and Fire‐Resistant Separators Based on Hydroxyapatite Nanowires for Advanced Lithium‐Ion Batteries

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