Polyimide/carbon black composite nanocoating layers as a facile surface modification strategy for high-voltage lithium ion cathode materials

Park, Jang Hoon; Kim, Ju Myung; Kim, Jong Su; Shim, Eun Gi; Lee, Sang Young

doi:10.1039/c3ta11163f

Cited by 20 publications

(9 citation statements)

References 29 publications

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“…In a large proportion of cases, the diffusion layer is absent as porous carbon substrate in the active layer has a large specific surface area, which would effectively diffuse oxygen from the outer atmosphere into the cell . One typical method is to mix catalyst, porous carbon materials, polymer binder (PTFE) and press slurry onto a chosen current collector (nickel foam or other metal grids) . In this design, PTFE is not only the hydrophobic coating but also a binder.…”

Section: Primary Zn–air Batteriesmentioning

confidence: 99%

Advanced Architectures and Relatives of Air Electrodes in Zn–Air Batteries

et al. 2018

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Zn–air batteries are becoming the promising power sources for portable and wearable electronic devices and hybrid/electric vehicles because of their high specific energy density and the low cost for next‐generation green and sustainable energy technologies. An air electrode integrated with an oxygen electrocatalyst is the most important component and inevitably determines the performance and cost of a Zn–air battery. This article presents exciting advances and challenges related to air electrodes and their relatives. After a brief introduction of the Zn–air battery, the architectures and oxygen electrocatalysts of air electrodes and relevant electrolytes are highlighted in primary and rechargeable types with different configurations, respectively. Moreover, the individual components and major issues of flexible Zn–air batteries are also highlighted, along with the strategies to enhance the battery performance. Finally, a perspective for design, preparation, and assembly of air electrodes is proposed for the future innovations of Zn–air batteries with high performance.

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Section: Primary Zn–air Batteriesmentioning

confidence: 99%

Advanced Architectures and Relatives of Air Electrodes in Zn–Air Batteries

et al. 2018

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“…Polyimide (PI) is a promising polymer as a cathode due to its high theoretical capacity, mechanical strength, and stable cycling performance. Most of the organic electrodes do not work with aqueous electrolytes, but polyimide is an exception [33,44,178].…”

Section: Imides-dianhydridesmentioning

confidence: 99%

Recent Progress on Organic Electrodes Materials for Rechargeable Batteries and Supercapacitors

et al. 2019

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Rechargeable batteries are essential elements for many applications, ranging from portable use up to electric vehicles. Among them, lithium-ion batteries have taken an increasing importance in the day life. However, they suffer of several limitations: safety concerns and risks of thermal runaway, cost, and high carbon footprint, starting with the extraction of the transition metals in ores with low metal content. These limitations were the motivation for an intensive research to replace the inorganic electrodes by organic electrodes. Subsequently, the disadvantages that are mentioned above are overcome, but are replaced by new ones, including the solubility of the organic molecules in the electrolytes and lower operational voltage. However, recent progress has been made. The lower voltage, even though it is partly compensated by a larger capacity density, may preclude the use of organic electrodes for electric vehicles, but the very long cycling lives and the fast kinetics reached recently suggest their use in grid storage and regulation, and possibly in hybrid electric vehicles (HEVs). The purpose of this work is to review the different results and strategies that are currently being used to obtain organic electrodes that make them competitive with lithium-ion batteries for such applications.

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“…The fillers introduced into the shape memory matrix require both significant reinforcing performance and little effect on the shape memory properties. To date, numerous studies have been reported on PI composites with diverse fillers, such as graphene, [12][13][14][15][16] carbon black, [17,18] carbon nanotubes, [19,20] MXene, [21,22] and Fe 3 O 4 . [23,24] In these studies, graphene has received more attention from researchers due to its good reinforcing properties, large specific surface area, and satisfactory bonding with polymer-based interfaces.…”

Section: Introductionmentioning

confidence: 99%

Engineering Thermal and Light Dual‐Triggered Thermosetting Shape Memory Polyimide Nanocomposites with Superior Toughness and Rapid Remote Actuation Properties

et al. 2022

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To meet a variety of application scenarios, high‐performance shape memory polymers require not only excellent mechanical and shape memory properties but also a multistimulus response. Herein, this article reports a near infrared (NIR) light‐triggered thermosetting shape memory polyimide (PI)/reduced graphene oxide (rGO) nanocomposite with a high transition temperature, excellent shape memory behaviors, superior robustness, and fast light‐induced shape recovery. The nanocomposite exhibits unexceptionable mechanical properties with breaking strain up to 44.1% and toughness up to 41.7 MJ m−3 at a low content of GO (1 wt%) on account of the good dispersion of GO in the PI matrix and the formed hierarchical structure similar to Nacre. The nanocomposites also have high glass transition temperatures above 200 °C and exhibit a great high‐temperature shape memory effect with a shape fixation rate above 99% and a shape recovery rate above 98%. In addition, with the aid of the efficient photothermal conversion property of rGO, enabling the induction of a temporary shape that completely recovers to the original shape within 7 s by sequential NIR irradiation. It is envisioned that high‐performance nanocomposites with high‐temperature shape memory and excellent mechanical and multistimuli properties will be widely applied in harsh environments, such as alarms, actuation, and so on.

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Polyimide/carbon black composite nanocoating layers as a facile surface modification strategy for high-voltage lithium ion cathode materials

Cited by 20 publications

References 29 publications

Advanced Architectures and Relatives of Air Electrodes in Zn–Air Batteries

Advanced Architectures and Relatives of Air Electrodes in Zn–Air Batteries

Recent Progress on Organic Electrodes Materials for Rechargeable Batteries and Supercapacitors

Engineering Thermal and Light Dual‐Triggered Thermosetting Shape Memory Polyimide Nanocomposites with Superior Toughness and Rapid Remote Actuation Properties

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