A simple method to prepare a polydopamine modified core-shell structure composite separator for application in high-safety lithium-ion batteries

Shi, Chuan; Dai, Jiangdong; Huang, Shaohua; Li, Chao; Shen, Xiu; Zhang, Peng; Wu, Dezhi; Sun, Di; Zhao, Jinbao

doi:10.1016/j.memsci.2016.06.046

Cited by 103 publications

(40 citation statements)

References 35 publications

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“…Electrospinning is a simple and low cost way to fabricate ultrathin nanofibers, which has been a promising technique in various fields including air filtration, water purification, tissue scaffolds, catalysis, flexible electronic, microwave absorption, high sensitivity sensing, and energy storage . Nevertheless, the low productivity and nonuniform collection of nanofibers are the main limitations for its industrial applications.…”

Section: Introductionsupporting

confidence: 75%

Multinozzle high efficiency electrospinning with the constraint of sheath gas

Zheng

Jiang

Chen

et al. 2019

J of Applied Polymer Sci

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In this article, sheath gas is introduced to design a novel multinozzle spinneret to improve the productivity of uniform nanofibers. The sheath gas in laminar flow provides an additional stretching force to overcome the mutual interferences among the nozzles, thus the simultaneous ejection of multiple jets is promoted. In addition, the sheath gas also contributes to the decrease of the diameter and the diameter distribution range of nanofibers. With the constraint of sheath gas, the productivity of nanofibers is 0.618‐0.712 g·h−1, which is about 30‐50 times as high as that from traditional electrospinning. The dynamic properties of the gas–liquid surface are investigated as well. A bead‐on‐strain model based on Maxwell theory is built up to study the motion and rheology behaviors of multiple jets, and the simulation results verify the experimental results well. The proposed method will accelerate the industrial applications of uniform electrospun nanofibrous membrane. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47574.

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Section: Introductionsupporting

confidence: 75%

Multinozzle high efficiency electrospinning with the constraint of sheath gas

Zheng

Jiang

Chen

et al. 2019

J of Applied Polymer Sci

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“…In some cases, nanoparticles are added to the matrix as fillers to increase its mechanical stability or ionic conductivity. In composites separators, the most widely used fillers are oxide ceramics (ZrO 2 [ 12 , 13 ], Al 2 O 3 [ 14 , 15 ], SiO 2 [ 16 , 17 ]), carbonaceous fillers (graphene [ 18 ], carbon black [ 19 ], carbon nanofiber [ 20 ]), and ionic liquids [ 21 ], among others.…”

Section: Battery Separator: Function Characteristics and Typesmentioning

confidence: 99%

“…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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“…Therefore, they still cannot meet the requirements of high safety batteries. Ryou et al have reported a surface modification method using PDA for polyolefin separators [ 30 , 31 , 32 , 33 , 34 , 35 ]. It has been proven that the separator matrix will not be harmed after coating with the PDA layer [ 36 ], and the PDA-coated separators usually show good mechanical and electrochemical properties and perform well in lithium-ion batteries [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

A Modified Ceramic-Coating Separator with High-Temperature Stability for Lithium-Ion Battery

Shi

Dai

et al. 2017

Polymers

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Abstract:In this work, the ceramic coating separator (CCS-CS) prepared with polyethylene (PE) separator, Al 2 O 3 inorganic particles, carboxymethyl cellulose sodium (CMC) and styrene-butadiene rubber (SBR) mix binders is further modified by coating with a thin polydopamine (PDA) layer through a simple chemical deposition method. Compared with the bare ceramic coating separator, the PDA-modified CCS-CS (CCS-CS-PDA) exhibits excellent thermal stability, which shows no thermal shrinkage after storing at 200 • C for 30 min. Compared with the PE separator, both the uptake and wettability with the electrolyte and water of CCS-CS-PDA are improved significantly. Meanwhile, when saturated with liquid electrolyte, the CCS-CS-PDA also shows enabled high ionic conductance. Furthermore, the test of the electrochemical impedances changing with the temperatures suggests that only the PE separator exhibits no thermal shutdown behaviors, and the CCS-CS separator only has a shutdown temperature range from 138 to 160 • C, while the CCS-CS-PDA shows a shutdown temperature range from 138 to more than 200 • C. The cells prepared with the CCS-CS-PDA also show stable repeated cycling performance and good rate capacity at room temperature.

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A simple method to prepare a polydopamine modified core-shell structure composite separator for application in high-safety lithium-ion batteries

Cited by 103 publications

References 35 publications

Multinozzle high efficiency electrospinning with the constraint of sheath gas

Multinozzle high efficiency electrospinning with the constraint of sheath gas

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

A Modified Ceramic-Coating Separator with High-Temperature Stability for Lithium-Ion Battery

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