Functional separator consisted of polyimide nonwoven fabrics and polyethylene coating layer for lithium-ion batteries

Shi, Chuan; Zhang, Peng; Huang, Shaohua; He, Xinyi; Yang, Pingting; Wu, Dezhi; Sun, Di; Zhao, Jinbao

doi:10.1016/j.jpowsour.2015.08.008

Cited by 129 publications

(64 citation statements)

References 31 publications

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“…The excellent performance of PE/PI membrane is shown in Fig. 8c, as compared with PP/PE/PP separators [148]. Some inorganic particles, like Al 2 O 3 , SiO 2 and TiO 2 , are also used to coat the nonwoven membrane for improving its electrochemical stability [152,154,155].…”

Section: Novel Separators With High Thermal Stabilitymentioning

confidence: 98%

“…However, the intrinsic disadvantages of the large pore size and nonuniform pore distribution of nonwoven separators could result in serious self-discharge and lithium dendrites, which will hinder their extensive application in LIBs [151,152]. Modifying nonwoven separators has been put forward, such as PVDF/PMIA/PVDF, PE/PI and PPESK/PVDF membranes [148,153]. The excellent performance of PE/PI membrane is shown in Fig.…”

Section: Novel Separators With High Thermal Stabilitymentioning

confidence: 99%

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Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

Duan

Tang

Dai

et al. 2019

Electrochem. Energ. Rev.

478

236

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Lithium-ion batteries (LIBs), with relatively high energy density and power density, have been considered as a vital energy source in our daily life, especially in electric vehicles. However, energy density and safety related to thermal runaways are the main concerns for their further applications. In order to deeply understand the development of high energy density and safe LIBs, we comprehensively review the safety features of LIBs and the failure mechanisms of cathodes, anodes, separators and electrolyte. The corresponding solutions for designing safer components are systematically proposed. Additionally, the in situ or operando techniques, such as microscopy and spectrum analysis, the fiber Bragg grating sensor and the gas sensor, are summarized to monitor the internal conditions of LIBs in real time. The main purpose of this review is to provide some general guidelines for the design of safe and high energy density batteries from the views of both material and cell levels.

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Section: Novel Separators With High Thermal Stabilitymentioning

confidence: 98%

Section: Novel Separators With High Thermal Stabilitymentioning

confidence: 99%

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

Duan

Tang

Dai

et al. 2019

Electrochem. Energ. Rev.

478

236

View full text Add to dashboard Cite

show abstract

“…The ionic conductivity of such composite separator was also better than that of polyimide nonwoven separators with polyethylene particles coating. 22 Additionally, CR2016 LIB coin cells using PVDF/Al 2 O 3 composite membranes as the separator were assembled and tested and compared with cells made by the PP and PVDF separators. All cells were measured over 100 cycles at 1.0C.…”

Section: Ionic Conductivity and Battery Performancementioning

confidence: 99%

A high-safety PVDF/Al₂O₃composite separator for Li-ion batteries via tip-induced electrospinning and dip-coating

Deng

Sun

et al. 2017

RSC Adv.

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“…Considerable efforts have been devoted to tackle the aforementioned issues, including the utilization of: (1) non-flammable organic electrolytes or co-solvent [12][13][14][15][16][17][18]; (2) high concentration electrolytes [19][20][21]; (3) electrolytes additives [22][23][24][25]. Generally, the non-flammable electrolytes and co-solvents are based on fluorinated, phosphate and ionized liquids, which has a high viscosity, low solubility of salts, and are incompatible with common anode materials [19][20], resulting in the poor electrochemical performances when used as LIB electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Core-Shell Nanofiber Containing Large Amount of Flame Retardants via Coaxial Dual-Nozzle Electrospinning as Battery Separators

Zhao¹,

Chen²,

Kang³

et al. 2019

Preprint

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Li-ion batteries have attracted enormous interests recently as promising power sources. However, the safety issue associated with the employment of highly flammable liquid electrolyte impedes the further development of next-generation Li-ion batteries. Recently, researchers reported the use of electrospun core-shell fiber as the battery separator consisting of polymer layer as protective shell and flame retardants loaded inside as core. In case of a typical battery shorting, the protective polymer shell melts during thermal-runaway and the flame retardants inside would be released to suppress the combustion of the electrolyte. Due to the use of a single precursor solution for electrospinning containing both polymer and flame retardants, the weight ratio of flame retardants is limited and dependent. Herein, we developed a dual-nozzle, coaxial electrospinning approach to fabricate the core-shell nanofiber with a greatly enhanced flame retardants weight percentage in the final fibers. The weight ratio of flame retardants of triphenyl phosphate in the final composite reaches over 60 wt.%. The LiFePO4-based cell using this composite nanofiber as battery separator exhibits excellent flame-retardant property without compromising the cycling stability or rate performances. In addition, this functional nanofiber can also be coated onto commercial separators instead of being used directly as separators.

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Functional separator consisted of polyimide nonwoven fabrics and polyethylene coating layer for lithium-ion batteries

Cited by 129 publications

References 31 publications

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

A high-safety PVDF/Al₂O₃composite separator for Li-ion batteries via tip-induced electrospinning and dip-coating

Core-Shell Nanofiber Containing Large Amount of Flame Retardants via Coaxial Dual-Nozzle Electrospinning as Battery Separators

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Functional separator consisted of polyimide nonwoven fabrics and polyethylene coating layer for lithium-ion batteries

Cited by 129 publications

References 31 publications

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

A high-safety PVDF/Al2O3composite separator for Li-ion batteries via tip-induced electrospinning and dip-coating

Core-Shell Nanofiber Containing Large Amount of Flame Retardants via Coaxial Dual-Nozzle Electrospinning as Battery Separators

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Product

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A high-safety PVDF/Al₂O₃composite separator for Li-ion batteries via tip-induced electrospinning and dip-coating