Progress in enhanced fluidization process for particle coating via atomic layer deposition

Li, Zoushuang; Li, Jiawei; Liu, Xiao; Chen, Rong

doi:10.1016/j.cep.2020.108234

Cited by 16 publications

(13 citation statements)

References 129 publications

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“…The unique capability of ALD to provide conformal coatings with sub-nanometer control makes it an ideal technique for powder modification over conventional wet-chemistry approaches. 134 Effective coating of individual nanoparticles is, however, still facing several challenges such as their high specific surface area and agglomeration, and diffusion limitation. 135 In particular, agglomeration, due to inter-particle forces (e.g., van der Waals forces), is considered as the main limiting factor affecting the overall coating quality during ALD processes.…”

Section: Emerging Applications Of Atmospheric-pressure Ald On High-po...mentioning

confidence: 99%

Atmospheric-pressure atomic layer deposition: recent applications and new emerging applications in high-porosity/3D materials

Chen,

Nijboer,

Kovalgin

et al. 2023

Dalton Trans.

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Section: Emerging Applications Of Atmospheric-pressure Ald On High-po...mentioning

confidence: 99%

Atmospheric-pressure atomic layer deposition: recent applications and new emerging applications in high-porosity/3D materials

Chen,

Nijboer,

Kovalgin

et al. 2023

Dalton Trans.

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“…High circulation frequency in FBR and optimized bed fluidization offers high contact efficacy and maximizes the probability of a precursor molecule to get adsorbed before it escapes from the bed . Improvement in the fluidization of particles for ALD coatings has recently been reviewed comprehensively …”

Section: An Overview Of the Powder Ald Processmentioning

confidence: 99%

“…97 Improvement in the fluidization of particles for ALD coatings has recently been reviewed comprehensively. 98 FBR technology has been used for a long time, 99 with its use as a deposition method to coat nuclear fuels reported in the 1960s. 100 Until the early 1990s, it evolved by and large as a CVD-FBR technology.…”

Section: An Overview Of the Powder Ald Processmentioning

confidence: 99%

Powder Coatings via Atomic Layer Deposition for Batteries: A Review

et al. 2022

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Rechargeable batteries have emerged as the most promising energy storage devices in response to continually growing modern demands and are still being researched to attain higher energy densities, structural stability, and longer cycling and calendar life. Owing to the fact that battery electrodes are developed from various types of powders, incorporation of functional nanocoating of suitable materials on powder materials and/or nanosynthesis of active powder constituents have shown promising results regarding the aforementioned challenges associated with modern battery technology. Atomic layer deposition (ALD) has been demonstrated to be highly effective in fabricating inorganic films even at the subnanoscale, not only on flat surfaces but also on individual particles with high conformity, uniformity, and self-limiting growth, thus providing exceptional control over film thickness. Unlike conventional wet-chemical processes, powder ALD offers a unique opportunity to develop nano- and subnanoscale films of various compositions over a variety of substrate particles regardless of their size, morphology, and composition. Proper modifications made by powder ALD process are known to induce improvements in structural stability, electronic and ionic conductivity at the interface, and consequent charge–discharge properties of the batteries. This review comprehensively covers the main strategies and materials used over time to improve the performance of various types of batteries utilizing the powder ALD process.

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“…Thus, it is of great significance to improve understanding on the fragmentation characteristics of nanoparticle agglomerates. It is generally believed that nanoparticle agglomerates have a multihierarchical structure [1][2][3][4] : clusters ($100 nm) of primary nanoparticles, primary agglomerates (a few micrometers) consisting of clusters, simple agglomerates (a few tens of micrometers), and complex agglomerates (a few hundreds of micrometers). The complex agglomerates are continuously broken and reorganized during fluidization, while the simple agglomerates are relatively stable and generally do not break.…”

Section: Introductionmentioning

confidence: 99%

A finite‐discrete element model for simulating collision and fragmentation of nanoparticle agglomerates

Zhang,

Liu

2023

AIChE Journal

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The fragmentation/adhesion behavior of nanoparticle agglomerate collision, which is challenging to model, is a crucial factor affecting fluidization. In this study, a discrete‐finite element method (FDEM) based cohesive crack model is developed to simulate normal collisions between a complex agglomerate (around 1 mm) and a wall. In the FDEM model, the complex agglomerate is built from primary agglomerates (around a few micrometers), whose adhesive force and Young's modulus are measured by an atomic force microscope (AFM). The simulation results including fragmentation morphology and plastic deformation agree well with the collision experiments. Finally, the sensitivity of the model is tested, including adhesive force, solid holdup, and Young's modulus. Fragment distribution is found to fit well with a two‐parameter Weibull function and damage ratio is found to have a polynomial relation with a modified Weber number. The model output shows a potential to be utilized in macroscopic model.

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Progress in enhanced fluidization process for particle coating via atomic layer deposition

Cited by 16 publications

References 129 publications

Atmospheric-pressure atomic layer deposition: recent applications and new emerging applications in high-porosity/3D materials

Atmospheric-pressure atomic layer deposition: recent applications and new emerging applications in high-porosity/3D materials

Powder Coatings via Atomic Layer Deposition for Batteries: A Review

A finite‐discrete element model for simulating collision and fragmentation of nanoparticle agglomerates

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