PVDF-HFP/PET/PVDF-HFP composite membrane for lithium-ion power batteries

Wu, Yi‐Shiuan; Yang, Chun‐Chen; Luo, Sin-Ping; Chen, Yilin; Wei, Chao‐Nan; Lue, Shingjiang Jessie

doi:10.1016/j.ijhydene.2016.11.201

Cited by 52 publications

(19 citation statements)

References 57 publications

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“…For PVDF-HFP membranes, several coatings have been applied, such as ZrO 2 nanoparticles [ 64 ], PP polymer [ 59 ], PMMA polymer [ 60 ], PDA layer [ 12 ], and SiO 2 -modified PET [ 61 ], leading mainly to improved electrolyte uptake.…”

Section: Poly(vinylidene Fluoride) and Its Copolymersmentioning

confidence: 99%

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

et al. 2018

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The separator membrane is an essential component of lithium-ion batteries, separating the anode and cathode, and controlling the number and mobility of the lithium ions. Among the polymer matrices most commonly investigated for battery separators are poly(vinylidene fluoride) (PVDF) and its copolymers poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE), poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), and poly(vinylidene fluoride-cochlorotrifluoroethylene) (PVDF-CTFE), due to their excellent properties such as high polarity and the possibility of controlling the porosity of the materials through binary and ternary polymer/solvent systems, among others. This review presents the recent advances on battery separators based on PVDF and its copolymers for lithium-ion batteries. It is divided into the following sections: single polymer and co-polymers, surface modification, composites, and polymer blends. Further, a critical comparison between those membranes and other separator membranes is presented, as well as the future trends on this area.

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Section: Poly(vinylidene Fluoride) and Its Copolymersmentioning

confidence: 99%

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

et al. 2018

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“…LFP//Li cells (CR2032–type coin cells) were composed of a homemade LFP/C composite cathode, [ 87 ] a commercial polyethylene microporous separator (diameter: ≈1.8 cm, thickness: ≈16 μm, Asahi Kasei Corp., Japan), and a lithium metallic foil (diameter: ≈1.6 cm, ≈450 μm in thickness) as the anode, followed by activation with the liquid electrolyte of 1 m lithium hexafluorophosphate (LiPF 6 ) dissolved in ethylene carbonate (EC)/diethyl carbonate (DEC) (EC:DEC = 1/1, v/v). All cell assemblies were carried out in an argon‐filled glove box (1TS100–1, MBRAUN UniLab–B, Germany; H 2 O and O 2 < 0.5 ppm).…”

Section: Methodsmentioning

confidence: 99%

Vacuum‐Deposited Transparent Organic Photovoltaics for Efficiently Harvesting Selective Ultraviolet and Near‐Infrared Solar Energy

Lee

Biring

et al. 2020

Solar RRL

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Highly transparent photovoltaics (TPVs) integrated to a battery with small capacity can efficiently drive low‐powered internet of things (IoT) devices such as the receivers, sensors, actuators, etc. Such see‐through solar technology not only provides an opportunity to convert ambient light (sunlight or indoor lighting) to electricity but also demonstrates a concept of self‐sustainable power. In this work, a selective ultraviolet/near‐infrared bulk‐heterojunction active layer, i.e., chloroaluminum phthalocyanine (ClAlPc) as donor and C60 as acceptor with a Cu:Ag/WO3 transparent electrode to visible lights are combined for achieving the vacuum‐deposited TPVs with a power conversion efficiency of 1.34%, average visible transmission of 77.45%, and color rendering index of 91.9. Moreover, a TPV module with a working area of 1.5 cm2 is able to charge a 0.58 mAh LiFePO4(LFP)//Li battery fully within one hour under 100 mW cm‐2 (≈1 sun) illumination. The TPV module can drive an exciplex organic light‐emitting diode with the electroluminescence >180 cd m−2 at low illumination intensity of <5 mW cm‐2. Overall, this work presents a significant step forward in the development of TPV technology towards integrating a display and storage battery, which could be successfully applied in wearable electronics requiring invisible and sustainable solar power.

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“…Numerous studies have addressed to nanofillers used for enhancing the mechanical strength and increasing the ion conductivity of a composite membrane [ 6 , 7 , 8 , 9 , 10 , 11 ]. However, the uniform dispersion of nanomaterials into an organic-based polymer solution is difficult because of their high surface energy and large energy disparity compared to those of common organic solvents [ 6 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…An alternative approach offers a nonwoven mat employed as a thin support film [ 10 ]. Although this type of nonwoven mat can provide good mechanical strength and useful thermal shutdown properties, it causes an increment in the thickness and a reduction in the porosity of the composite separator [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Multilayered PVDF-HFP Porous Separator via Phase Separation and Selective Solvent Etching for High Voltage Lithium-Ion Batteries

Bui

Nguyen

et al. 2021

Membranes

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The development of highly porous and thin separator is a great challenge for lithium-ion batteries (LIBs). However, the inevitable safety issues always caused by poor mechanical integrity and internal short circuits of the thin separator must be addressed before this type of separator can be applied to lithium-ion batteries. Here, we developed a novel multilayer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) membrane with a highly porous and lamellar structure, through a combination of evaporation-induced phase separation and selective solvent etching methods. The developed membrane is capable of a greater amount of electrolyte uptake and excellent electrolyte retention resulting from its superior electrolyte wettability and highly porous structure, thereby offering better electrochemical performance compared to that of a commercial polyolefin separator (Celgard). Moreover, benefiting from the layered configuration, the tensile strength of the membrane can reach 13.5 MPa, which is close to the mechanical strength of the Celgard type along the transversal direction. The elaborate design of the multilayered structure allows the fabrication of a new class of thin separators with significant improvements in the mechanical and electrochemical performance. Given safer operation, the developed multilayer membrane may become a preferable separator required for high-power and high-energy storage devices.

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PVDF-HFP/PET/PVDF-HFP composite membrane for lithium-ion power batteries

Cited by 52 publications

References 57 publications

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

Vacuum‐Deposited Transparent Organic Photovoltaics for Efficiently Harvesting Selective Ultraviolet and Near‐Infrared Solar Energy

Multilayered PVDF-HFP Porous Separator via Phase Separation and Selective Solvent Etching for High Voltage Lithium-Ion Batteries

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