Electrochemical performance of a thermally rearranged polybenzoxazole nanocomposite membrane as a separator for lithium-ion batteries at elevated temperature

Lee, Moonjoo; Hwang, Jun Ki; Kim, Ji Hoon; Lim, Hyung‐Seok; Sun, Yang Kook; Suh, Kyung‐Do; Lee, Young Moo

doi:10.1016/j.jpowsour.2015.11.068

Cited by 24 publications

(10 citation statements)

References 29 publications

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“…With growing global energy demands, lithium-ion batteries (LIBs) are widely applied in energy storage systems and are expected to achieve high energy density, excellent electrochemical properties, and a long cycle life [1]. The LIB separator allows lithium ions to transport, playing a vital role in holding back cathode and anode contact thus avoiding the occurrence of short circuit [2].…”

Section: Introductionmentioning

confidence: 99%

Multilayer Nanofiber Composite Separator for Lithium-Ion Batteries with High Safety

Yang

Liu

et al. 2019

Polymers

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An original Von Koch curve-shaped tipped electrospinneret was used to prepare a polyimide (PI)-based nanofiber membrane. A multilayer Al2O3@polyimide/polyethylene/Al2O3@polyimide (APEAP) composite membrane was tactfully designed with an Al2O3@ polyimide (AP) membrane as outer shell, imparting high temperature to the thermal run-away separator performance and a core polyethylene (PE) layer imparts the separator with a thermal shut-down property at low temperature (123 °C). An AP electrospun nanofiber was obtained by doping Al2O3 nanoparticles in PI solution. The core polyethylene layer was prepared using polyethylene powder and polyterafluoroethylene (PTFE) miniemulsion through a coating process. The addition of PTFE not only bonds PE power, but also increases the adhesion force between the PE and AP membranes. As a result, the multilayer composite separator has high safety, outstanding electrochemical properties, and better cycling performance as a lithium-ion battery separator.

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Section: Introductionmentioning

confidence: 99%

Multilayer Nanofiber Composite Separator for Lithium-Ion Batteries with High Safety

Yang

Liu

et al. 2019

Polymers

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“…In the next year, they improved the material. [33] The pristine membranes were coated respectively by spherically shaped hydroxyl copolyimide 1(HPI1) and sea-squirt shaped HPI4 nanoparticles. And they are converted into TR-PBO1 and TR-PBO4 nanocomposite membranes through heat treatment.…”

Section: Polybenzoxazole Separatorsmentioning

confidence: 99%

Advanced separators for lithium-ion batteries

Chen

Zhan

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The separator technology is a major area of interest in lithium-ion batteries (LIBs) for high-energy and high-power applications such as portable electronics, electric vehicles and energy storage for power grids. Separators play an essential part that physically prevents direct contact between positive and negative electrodes while acting as an electrolyte reservoir to transport lithium ions. The characteristics of different separators would directly affect the performance under cell abuse; hence separators are crucial for battery safety. This paper introduces the characteristics of separators, means to improve traditional commercial polymeric separators and novel materials for separators. Other novel high-performance separators are also briefly discussed in this paper. Insights from this paper illustrate that various strategies could enhance the performance of separators, and better performance and safety can be achieved in separators in high-energy lithium-ion batteries.

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“…Hence, improved separator films must be used to prevent short circuits and hazardous battery explosions. The working principle of a separator is to essentially provide a path to transfer lithium ions between an anode and cathode during charging/discharging without causing short circuits [11,15,16] . Commercial separators comprise polyolefins (polypropy-lene (PP) or polyethylene (PE)), which are widely used because of their outstanding electrochemical and mechanical properties originating from their convenient morphologies, and low costs [17][18][19][20] .…”

Section: Introductionmentioning

confidence: 99%

“…Commercial separators comprise polyolefins (polypropy-lene (PP) or polyethylene (PE)), which are widely used because of their outstanding electrochemical and mechanical properties originating from their convenient morphologies, and low costs [17][18][19][20] . However, the thermal stabilities of polyolefins are not sufficiently high to endure extreme temperatures, because their melting points are low (PE: 130 °C, PP: 160 °C) [16,[21][22][23][24] . Consequently, their application to Li-ion batteries poses several safety risks.…”

Section: Introductionmentioning

confidence: 99%

Polymer-free electrospun separator film comprising silica nanofibers and alumina nanoparticles for Li-ion full cell

Zaidi

Wang

Shao

et al. 2020

Journal of Energy Chemistry

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Electrochemical performance of a thermally rearranged polybenzoxazole nanocomposite membrane as a separator for lithium-ion batteries at elevated temperature

Cited by 24 publications

References 29 publications

Multilayer Nanofiber Composite Separator for Lithium-Ion Batteries with High Safety

Multilayer Nanofiber Composite Separator for Lithium-Ion Batteries with High Safety

Advanced separators for lithium-ion batteries

Polymer-free electrospun separator film comprising silica nanofibers and alumina nanoparticles for Li-ion full cell

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