Polyimide composite separator containing surface-modified hollow mesoporous silica nanospheres for lithium-ion battery application

Jeong, Tae-Yang; Lee, Young Dong; Ban, Yoojung; Lee, Juho; Lee, Hayeong; Kwon, Yong Ku

doi:10.1016/j.polymer.2020.123288

Cited by 13 publications

(5 citation statements)

References 38 publications

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“…[8] Due to their excellent heat resistant, mechanical, and photoelectric properties, PI nanocomposites have attracted significant attention in aerospace, nuclear energy, and electronics. [9][10][11][12] Tungsten oxide (WO 3 ), an n-type semiconductor with a wide band gap, is prevalently utilized in electrochromic materials. [13] WO 3 nanoparticles (NPs) exhibit high specific surface areas, small size effects, and homogeneous sizes.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Niu

Shi

Pei

et al. 2022

Macro Materials & Eng

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In this study, WO 3 nanorods are directly blended with polyamic acid (PAA) solutions to improve the electrochromic capacity of WO 3 /PAA composite films. Specifically, the hexagonal WO 3 nanorods are prepared as inorganic reinforcements using a hydrothermal method and modified by 𝜸-aminopropyl triethoxysilane. After curing at 300 °C, the WO 3 nanorods/polyimide (PI) composite films demonstrate excellent mechanical and thermal properties. The tensile strength of the 1 wt% WO 3 /PI composite film is ≈110.27 MPa. The thermal stability of the 5 wt% WO 3 /PI composite film is better than that of the others, and the T 5 (5% thermal weight loss temperature) value is ≈560.05 °C. Moreover, the WO 3 /PAA composite films demonstrate electrochromic behaviors. The electrochromic range of the 5 wt% WO 3 /PAA composite film exceeds to 68%. For the WO 3 /PAA samples, the oxidation peak of the WO 3 nanorods is evident in the cyclic voltammetry curves. The color contrast of WO 3 /PI nanocomposites can be enhanced owing to the significant synergistic effects of the electron donor-acceptor system.

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Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Niu

Shi

Pei

et al. 2022

Macro Materials & Eng

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“…Among them, lithium-ion batteries have been widely used in battery energy storage. Lithium-ion batteries − not only have the advantages of high energy density and long cycle life but also commercialized lithium-ion batteries are very flexible. Lithium-ion batteries are widely used in mobile devices and electric vehicles that have developed rapidly in recent years.…”

Section: Introductionmentioning

confidence: 99%

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

et al. 2023

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At present, the basic structure and mechanism of solid electrolyte interface (SEI) have been studied based on different models. Although many researchers have observed the characteristics and properties of SEI through various characterization methods, it is still unable to explain its dynamic mechanism of action from the very small microscopic level. Among them, most researchers change the electrochemical performance of batteries by adding additives or material coating. Traditional research methods only state the performance of batteries from the appearance but lack detailed analysis of the electrochemical reaction of batteries during the research process. Based on the analysis of some models established by SEI, this study summarized the analysis of the research angle of SEI film through various characterization methods. The present traditional SEI and artificial SEI are introduced. Finally, the methods to improve the chemical performance of lithium battery and the challenges to solve the problems are summarized and prospected.

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“…Among them, the incorporation of inorganic mesoporous materials (e.g., hollow mesoporous SiO 2 ) to improve the dielectric properties of polyimide is one of the first choices of many researchers. [8][9][10][11][12][13] In the process of contact between inorganic filler and polymer material matrix, due to the filler surface with high surface energy, van der Waals force or electrostatic interactions, resulting in filler particles, are prone to aggregation and laminar deposition phenomenon between the particles to form a more stable low-energy state. Therefore, porous materials with excellent dielectric properties are of interest to many researchers.…”

Section: Introductionmentioning

confidence: 99%

“…The researchers prepared porous low dielectric polyimide by changing the chemical structure of the polyimide precursor and adding solvents or surfactants to control the pore size, distribution and connectivity of the material. Among them, the incorporation of inorganic mesoporous materials (e.g., hollow mesoporous SiO 2 ) to improve the dielectric properties of polyimide is one of the first choices of many researchers 8–13 . In the process of contact between inorganic filler and polymer material matrix, due to the filler surface with high surface energy, van der Waals force or electrostatic interactions, resulting in filler particles, are prone to aggregation and laminar deposition phenomenon between the particles to form a more stable low‐energy state.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of mesoporous SiO₂/polyimide composite films

Cui,

Zheng,

Wang

et al. 2023

Polymer Composites

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Although polyimide films have a low dielectric constant, with the advent of the 5G era, the dielectric properties of the material are required to be further improved. Therein, we prepared controlled hollow mesoporous SiO2 nanomicrospheres by the hard template method to make mesoporous low dielectric polyimide films. The composite membrane exhibits better thermal stability, mechanical properties, and hydrophobicity compared to the pure membrane. Hollow mesoporous SiO2 dispersed in polyimide can reduce the inhomogeneity of charge distribution between molecules and reduce the interaction between polar chemical bonds and aromatic rings, thus improving the dielectric properties of the whole film. The minimum dielectric constant of the composite films was 2.80 when the hollow mesoporous SiO2 was added at 1.0%. These results fully indicate that the addition of hollow mesoporous SiO2 is beneficial to the multifaceted performance of the polyimide films.Highlights Preparation of hollow mesoporous SiO2 microspheres by using different polystyrene microsphere solutions and TEOS ratios. Synthesis of composite films with different contents of hollow mesoporous SiO2 as functional fillers. The effect of hollow mesoporous SiO2 content on the mechanical properties and thermal stability of PI composite films was investigated. Addition of hollow mesoporous SiO2 reduces the dielectric constant of polyimide composite films.

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Polyimide composite separator containing surface-modified hollow mesoporous silica nanospheres for lithium-ion battery application

Cited by 13 publications

References 38 publications

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

Preparation and properties of mesoporous SiO₂/polyimide composite films

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Polyimide composite separator containing surface-modified hollow mesoporous silica nanospheres for lithium-ion battery application

Cited by 13 publications

References 38 publications

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO3 Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO3 Nanorods

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

Preparation and properties of mesoporous SiO2/polyimide composite films

Contact Info

Product

Resources

About

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Preparation and properties of mesoporous SiO₂/polyimide composite films