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<p>In this study, the effects of mesh structure and hydrodynamic characteristics on fouling behavior were investigated through filtration experiments and computational fluid dynamics (CFD) simulations using aqueous graphite-based anode slurries composed of graphite (~ 8.8&#xa0;μm), nanoscale carbon black, and carboxymethyl cellulose (CMC). Stainless steel mesh filters with mesh numbers ranging from 20 to 120 were employed. For single-layer mesh filtration (80–120 mesh), finer meshes resulted in an increased number of captured agglomerates with reduced sizes, indicating the coexistence of shear-induced breakup and particle capture. This behavior is attributed to the localized shear stress and flow acceleration that developed near the wire intersections and constricted flow regions. By contrast, in multilayer configurations, the fouling behavior was strongly governed by the flow redistribution depending on the mesh arrangement. While finer meshes promote fouling in single-layer systems, symmetric multilayer configurations result in localized fouling in the downstream fine layer. By contrast, the asymmetric configuration (20/40/120) promoted gradual flow redistribution, reduced shear heterogeneity, and effectively suppressed fouling. These findings demonstrate that fouling in mesh filtration is governed not only by pore size but also by the coupled effects of local shear, flow acceleration, and layer-wise flow distribution. The proposed asymmetric mesh design provides an effective strategy for fouling mitigation and offers a hydrodynamic framework for designing filtration systems for particle-laden suspensions.</p> Graphical abstract <p></p>

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Fouling behavior of lithium-ion battery anode slurry in single- and multilayer mesh filters: experimental and numerical studies

  • 期刊论文

  • 发表日期：

    2026年7月29日

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  • Jihun Kim,
  • Sungkyong Lee,
  • Chaemin Song,
  • Youngbin Baek,
  • Young Ki Lee

摘要

In this study, the effects of mesh structure and hydrodynamic characteristics on fouling behavior were investigated through filtration experiments and computational fluid dynamics (CFD) simulations using aqueous graphite-based anode slurries composed of graphite (~ 8.8 μm), nanoscale carbon black, and carboxymethyl cellulose (CMC). Stainless steel mesh filters with mesh numbers ranging from 20 to 120 were employed. For single-layer mesh filtration (80–120 mesh), finer meshes resulted in an increased number of captured agglomerates with reduced sizes, indicating the coexistence of shear-induced breakup and particle capture. This behavior is attributed to the localized shear stress and flow acceleration that developed near the wire intersections and constricted flow regions. By contrast, in multilayer configurations, the fouling behavior was strongly governed by the flow redistribution depending on the mesh arrangement. While finer meshes promote fouling in single-layer systems, symmetric multilayer configurations result in localized fouling in the downstream fine layer. By contrast, the asymmetric configuration (20/40/120) promoted gradual flow redistribution, reduced shear heterogeneity, and effectively suppressed fouling. These findings demonstrate that fouling in mesh filtration is governed not only by pore size but also by the coupled effects of local shear, flow acceleration, and layer-wise flow distribution. The proposed asymmetric mesh design provides an effective strategy for fouling mitigation and offers a hydrodynamic framework for designing filtration systems for particle-laden suspensions.

Graphical abstract