Lithium ion battery separator with high performance and high safety enabled by tri-layered SiO2@PI/m-PE/SiO2@PI nanofiber composite membrane

Liu, Jian; Liu, Yanbo; Yang, Wenxiu; Ren, Qinyuan; Li, Fangying; Huang, Zheng

doi:10.1016/j.jpowsour.2018.06.008

Cited by 92 publications

(43 citation statements)

References 25 publications

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“…The TPU/PI membrane showed no dimensional change, even at 230 °C, since the PI was used as the hot support structure. The thermal safety of the battery would be enhanced when TPU/PI was used as the polymer electrolyte [26].…”

Section: Resultsmentioning

confidence: 99%

“…Polyimide (PI) as one of the most well-known thermal stable polymeric materials; it is widely used in high safety batteries. Nevertheless, weak mechanical strength hinders its applications in high safety batteries [25,26,27,28]. Thermoplastic polyurethane (TPU) with strong polar groups shows high elasticity, excellent tensile and aging resistance, and experiments have proved that it can perform well in lithium batteries as a polymer electrolyte, but that its elastic elongation is too high and its thermal stability is low [29,30,31].…”

Section: Introductionmentioning

confidence: 99%

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A Parallel Bicomponent TPU/PI Membrane with Mechanical Strength Enhanced Isotropic Interfaces Used as Polymer Electrolyte for Lithium-Ion Battery

et al. 2019

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In this work, a side-by-side bicomponent thermoplastic polyurethane/polyimide (TPU/PI) polymer electrolyte prepared with side-by-side electrospinning method is reported for the first time. Symmetrical TPU and PI co-occur on one fiber, and are connected by an interface transition layer formed by the interdiffusion of two solutions. This structure of the as-prepared TPU/PI polymer electrolyte can integrate the advantages of high thermal stable PI and good mechanical strength TPU, and mechanical strength is further increased by those isotropic interface transition layers. Moreover, benefiting from micro-nano pores and the high porosity of the structure, TPU/PI polymer electrolyte presents high electrolyte uptake (665%) and excellent ionic conductivity (5.06 mS·cm−1) at room temperature. Compared with PE separator, TPU/PI polymer electrolyte exhibited better electrochemical stability, and using it as the electrolyte and separator, the assembled Li/LiMn2O4 cell exhibits low inner resistance, stable cyclic and notably high rate performance. Our study indicates that the TPU/PI membrane is a promising polymer electrolyte for high safety lithium-ion batteries.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Parallel Bicomponent TPU/PI Membrane with Mechanical Strength Enhanced Isotropic Interfaces Used as Polymer Electrolyte for Lithium-Ion Battery

et al. 2019

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“…Ductile-to-brittle transition and melting temperature can be measured using thermogravimetric analysis and differential scanning calorimetry. The shutdown temperature and degree of shutdown can be quantified by measuring the impedance spectroscopy and temperature changes in the cell containing the separator [ 49 , 50 ].…”

Section: Properties Of the Separatormentioning

confidence: 99%

“…A commercial separator is primarily composed of organic materials such as PE or PP. Therefore, functionalizing organic materials on the separator is easy [ 50 ]. Compared with metals and ceramics, organic materials are light, cheap, and easy to apply to the commercial manufacturing process owing to their simple synthetic processes.…”

Section: Various Materials For Modifying Multifunctional Separatormentioning

confidence: 99%

A Review of Functional Separators for Lithium Metal Battery Applications

et al. 2020

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Lithium metal batteries are considered “rough diamonds” in electrochemical energy storage systems. Li-metal anodes have the versatile advantages of high theoretical capacity, low density, and low reaction potential, making them feasible candidates for next-generation battery applications. However, unsolved problems, such as dendritic growths, high reactivity of Li-metal, low Coulombic efficiency, and safety hazards, still exist and hamper the improvement of cell performance and reliability. The use of functional separators is one of the technologies that can contribute to solving these problems. Recently, functional separators have been actively studied and developed. In this paper, we summarize trends in the research on separators and predict future prospects.

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“…Moreover, polyimide (PI) is widely used in microelectronics and aerospace fields due to its comprehensively excellent properties . However, PI polymer materials still encounter problems such as difficult processing and high cost.…”

Section: Introductionmentioning

confidence: 99%

Overall Investigation of Poly (Phenylene Sulfide) from Synthesis and Process to Applications—A Review

Zuo

Tcharkhtchi

Shirinbayan

et al. 2019

Macro Materials & Eng

106

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Poly (phenylene sulfide) (PPS) is one kind of high‐performance polymer with high thermal stability that can be used widely in different industrial domains. However, according to an investigation of the literature, few reviews have comprehensively focused on the continuous development of PPS applications in the past decade. To meet this demand, this paper provides an overall investigation of PPS polymer and PPS‐based composites from synthesis and process to applications. Briefly, this paper introduces PPS materials according to the following topics. First, the molecular weight distribution and morphology of PPS, as well as their reinforced parts, are introduced. Afterward, the topic is focused on the synthesis, process, and blending of PPS. In the next part, this paper investigates the key points regarding PPS as a high‐performance polymer, focusing on the aspect of thermal behavior and mechanical properties. Finally, PPS composite applications are emphasized and overviewed from a wide range of aspects.

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Lithium ion battery separator with high performance and high safety enabled by tri-layered SiO2@PI/m-PE/SiO2@PI nanofiber composite membrane

Cited by 92 publications

References 25 publications

A Parallel Bicomponent TPU/PI Membrane with Mechanical Strength Enhanced Isotropic Interfaces Used as Polymer Electrolyte for Lithium-Ion Battery

A Parallel Bicomponent TPU/PI Membrane with Mechanical Strength Enhanced Isotropic Interfaces Used as Polymer Electrolyte for Lithium-Ion Battery

A Review of Functional Separators for Lithium Metal Battery Applications

Overall Investigation of Poly (Phenylene Sulfide) from Synthesis and Process to Applications—A Review

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