Development of composite separators by coating hydrochloric acid-treated halloysite nanotubes on polypropylene separators for lithium-ion batteries

Deng, Qinting; Chuan, Xiuyun; Zhao, Yupeng; Liu, Fangfang; Huang, Shizhi; Wu, Jianyang

doi:10.1039/d4ra02164a

RSC Adv.

2024

DOI: 10.1039/d4ra02164a

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Development of composite separators by coating hydrochloric acid-treated halloysite nanotubes on polypropylene separators for lithium-ion batteries

Qinting Deng,

Xiuyun Chuan,

Yupeng Zhao

et al.

Abstract: (1) HNTs treated with HCl of different concentrations were coated on both sides of PP separators to prepare PP/HNT composite separators. (2) The PP/HNT composite separators exhibited improved physical and electrochemical properties.

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Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries

He,

Wang,

Zhong

et al. 2025

Journal of Power Sources

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Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries

He,

Wang,

Zhong

et al. 2025

Journal of Power Sources

View full text Add to dashboard Cite

Enhanced Performance of Lithium-Ion Batteries Based on a Polyethylenimine-Grafted SiO₂-Modified Polypropylene Separator

Yan,

Wang,

Sun

et al. 2024

ACS Appl. Polym. Mater.

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Lithium battery (LIB) separators are integral components of lithium batteries, serving the crucial function of separating the positive and negative electrodes within the batteries, thereby enabling the passage of lithium ions. In general, lithium-ion battery (LIB) separators must exhibit excellent wettability, ionic conductivity, and heat resistance. In this study, commercial polypropylene (PP) separators were modified through the application of a coating comprising polyethylene imine (PEI)-functionalized silica nanoparticles. In particular, a silane coupling agent (KH560) was used to create epoxy groups on the surface of nanosilica, which was then subjected to a chemical cross-linking process with PEI through the ring-opening reaction between epoxy groups and amino groups. It was observed that the modified PP separator displayed augmented wettability, electrolyte absorption rate, and ionic conductivity, which in turn enhanced the cycling and rate performance and other electrochemical properties of the lithium-ion battery. In particular, the optimized sample (1.6 wt %) exhibited the highest specific capacity (151.1 mAh g −1 @1C,LiFePO 4 ||Li) at 1C in comparison to the unmodified commercial PP (142.5 mAh g −1 @1C,LiFePO 4 ||Li). Additionally, the modified PP separator demonstrated enhanced thermal stability in comparison to that of the pristine PP separator, thereby ensuring the stable operation of lithium-ion batteries even under extreme conditions.

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Development of composite separators by coating hydrochloric acid-treated halloysite nanotubes on polypropylene separators for lithium-ion batteries

Abstract: (1) HNTs treated with HCl of different concentrations were coated on both sides of PP separators to prepare PP/HNT composite separators. (2) The PP/HNT composite separators exhibited improved physical and electrochemical properties.

Cited by 2 publications

References 37 publications

Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries

Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries

Enhanced Performance of Lithium-Ion Batteries Based on a Polyethylenimine-Grafted SiO₂-Modified Polypropylene Separator

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Development of composite separators by coating hydrochloric acid-treated halloysite nanotubes on polypropylene separators for lithium-ion batteries

Abstract: (1) HNTs treated with HCl of different concentrations were coated on both sides of PP separators to prepare PP/HNT composite separators. (2) The PP/HNT composite separators exhibited improved physical and electrochemical properties.

Cited by 2 publications

References 37 publications

Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries

Multifunctional separators with high safety and regulated ion transport for lithium-ion batteries

Enhanced Performance of Lithium-Ion Batteries Based on a Polyethylenimine-Grafted SiO2-Modified Polypropylene Separator

Contact Info

Product

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About

Enhanced Performance of Lithium-Ion Batteries Based on a Polyethylenimine-Grafted SiO₂-Modified Polypropylene Separator