Effects of nanofillers on morphology and surface wetting of microporous polypropylene composite membranes

Bicy, K; P, Anu Paul; Kalarikkal, Nandakumar; Stephen, A.; G, Geethamma V.; Rouxel, Didier; Thomas, Sabu

doi:10.1016/j.matchemphys.2020.123742

Cited by 13 publications

(3 citation statements)

References 50 publications

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“…Besides, the obtained ionic conductivity of the resulting blends needs to be further improved. To address these issues and enhance the separator properties such as electrolyte uptake, thermal stability, and ionic conductivity, nanoscale particles including Al 2 O 3 , SiO 2 , TiO 2 , and Sb 2 O 3 have been successfully incorporated into the polymer matrix. , …”

Section: Fluorine Chemistry In Li-based Batteriesmentioning

confidence: 99%

“…To address these issues and enhance the separator properties such as electrolyte uptake, thermal stability, and ionic conductivity, nanoscale particles including Al 2 O 3 , SiO 2 , TiO 2 , and Sb 2 O 3 have been successfully incorporated into the polymer matrix. 239,240 A variety of modification strategies have also been employed to enhance the physiochemical and electrochemical performance of the separators, among which the surface coating/ grafting method has been considered as a promising candidate to address the above-mentioned drawbacks facing the common commercial separator. 226,234 By coating the composite material of graphite fluoride nanosheets (GFNs) and PVDF, the pristine PP separator was modified by Zhang et al on a large scale.…”

Section: Fluorinated Separatorsmentioning

confidence: 99%

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Fluorine Chemistry in Rechargeable Batteries: Challenges, Progress, and Perspectives

Wang,

Yang,

Meng

et al. 2024

Chem. Rev.

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The renewable energy industry demands rechargeable batteries that can be manufactured at low cost using abundant resources while offering high energy density, good safety, wide operating temperature windows, and long lifespans. Utilizing fluorine chemistry to redesign battery configurations/components is considered a critical strategy to fulfill these requirements due to the natural abundance, robust bond strength, and extraordinary electronegativity of fluorine and the high free energy of fluoride formation, which enables the fluorinated components with cost effectiveness, nonflammability, and intrinsic stability. In particular, fluorinated materials and electrode|electrolyte interphases have been demonstrated to significantly affect reaction reversibility/kinetics, safety, and temperature tolerance of rechargeable batteries. However, the underlining principles governing material design and the mechanistic insights of interphases at the atomic level have been largely overlooked. This review covers a wide range of topics from the exploration of fluorinecontaining electrodes, fluorinated electrolyte constituents, and other fluorinated battery components for metal-ion shuttle batteries to constructing fluoride-ion batteries, dual-ion batteries, and other new chemistries. In doing so, this review aims to provide a comprehensive understanding of the structure− property interactions, the features of fluorinated interphases, and cutting-edge techniques for elucidating the role of fluorine chemistry in rechargeable batteries. Further, we present current challenges and promising strategies for employing fluorine chemistry, aiming to advance the electrochemical performance, wide temperature operation, and safety attributes of rechargeable batteries.

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Section: Fluorine Chemistry In Li-based Batteriesmentioning

confidence: 99%

Section: Fluorinated Separatorsmentioning

confidence: 99%

Fluorine Chemistry in Rechargeable Batteries: Challenges, Progress, and Perspectives

Wang,

Yang,

Meng

et al. 2024

Chem. Rev.

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“…), and ferroelectric fillers. [10][11][12] Lithium-ion battery separators are made using a variety of processes, including electrospinning dip coating, solvent casting, and phase inversion, among others.…”

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confidence: 99%

Polypropylene/silica nanocomposite membranes for lithium‐ion battery separator: Studies on interfacial tuning of pore structure, mechanical and thermal properties

Kottathodi,

Royaud,

Poncot

et al. 2023

SPE Polymers

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Energy storage and mobility industries use polypropylene (PP) nanocomposites. The energy storage applications of newly made microporous SiO2 filled, porous PP nanocomposites combining PP, natural rubber, and SiO2 nanoparticles then subsequently removing natural rubber from the nanocomposite were explored in this paper. SEM pictures showed how the pore morphology was altered by nanofillers. Mechanical tensile tests reveal that the SiO2 nanofiller enhances the mechanical properties of microporous polypropylene. XRD and DSC experiments have shown that SiO2 nanoparticles works as a nucleating agent but has no impact on the crystallinity of PP. The electrolyte absorption, porosity, ionic conductivity, wettability and charge–discharge performance were investigated for PP/SiO2 nanocomposite separator. SiO2 nanoparticles in the matrix have a significant impact on the wettability of PP membrane, since the presence of SiO2 nanoparticle reduces the contact angle from 24° to 15°. SiO2 filled PP membrane outperformed microporous PP and celgard separator in terms of electrolyte uptake (230%) and porosity (62%). In comparison to microporous PP, the PP/SiO2 membrane demonstrated a better ionic conductivity (5.9 × 10−4 S cm−1). Finally, Li/PP‐SiO2/LiFePO4 coin cells (2320 type) were fabricated and delivered a discharge capacity of 138 mAh g−1.

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Interfacial tuning and designer morphologies of microporous membranes based on polypropylene/natural rubber nanocomposites

Bicy

Rouxel

Ponçot

et al. 2021

J of Applied Polymer Sci

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Microporous polypropylene (PP) nanocomposite membranes are in great demand in various fields such as energy harvesting, water purification, and other industrial applications. Thin films of PP/natural rubber (NR) blend nanocomposite have been prepared by melt mixing and the membranes are made porous by extracting the NR phase from the blend. The present study gives a better insight into the nanoparticle shape and localization‐tailored porous morphology of PP membrane. Thermodynamic prediction of nanofiller localization and its impact on morphology were studied. 2D clay platelets in PP matrix tune the morphology of the porous membrane into lamellar, whereas spherical nanofillers give elongated spherical pores. The localization of nanoparticles was observed using transmission electron microscope, which is also confirmed from theoretical prediction of localization of nanofillers with the help of interfacial energy and surface tension. Thermal studies reveal that nanofillers enhance the thermal stability of polymers. Mechanical studies reveal that nanoparticles improve the mechanical properties of the system. 2D platelet shaped‐nanofillers enhance the mechanical strength of the polymer up to 39%, which is higher than that obtained for 3D spherical nanofillers. Nanofiller shape and localization have a great influence in deciding the properties and porosity of the membrane.

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Effects of nanofillers on morphology and surface wetting of microporous polypropylene composite membranes

Cited by 13 publications

References 50 publications

Fluorine Chemistry in Rechargeable Batteries: Challenges, Progress, and Perspectives

Fluorine Chemistry in Rechargeable Batteries: Challenges, Progress, and Perspectives

Polypropylene/silica nanocomposite membranes for lithium‐ion battery separator: Studies on interfacial tuning of pore structure, mechanical and thermal properties

Interfacial tuning and designer morphologies of microporous membranes based on polypropylene/natural rubber nanocomposites

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