Expanded Copper Mesh Roll (T 0.05-0.25mm * W 140-160mm * L 1.0m) with Rhombic Pores as Battery Anode Current Collector, CBACCECMR
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The copper mesh current collector with rhombic pores (also referred to as expanded copper mesh) is a 3D structural substrate used primarily in high-power lithium-ion batteries and next-generation lithium-metal anodes. Unlike the "microporous" foil which is a solid sheet with holes drilled into it, a rhombic mesh is created by stretching and expanding a copper sheet to form a series of diamond-shaped (rhombic) openings.
The rhombic design provides a "bridge-and-void" architecture that offers specific advantages over both solid and standard perforated foils:
(1) 3D Skeleton: The rhombic pattern creates a three-dimensional framework that allows the active anode material (like graphite or silicon) to be embedded inside the mesh rather than just coated on top.
(2) High Opening Ratio: These meshes typically have a high "open area" (often 40%–70%), which drastically reduces the amount of inactive metal in the battery.
(3) Interlocking Diamonds: The geometry of the rhombic openings provides superior mechanical interlocking, which is critical for preventing the electrode material from falling off during high-vibration use or rapid expansion.
Therefore, it brings the following advantages: (1) Volume expansion accommodation; (2) Enhanced ion pathways; (3) Heat dissipation; (4) Dendrite suppression.
| Part Number |
CBACCECMR (C-BACC-ECMR) |
| Purity |
>99.99% |
| Dimension |
(1) Roll: T 0.1mm * W 140mm * L 1.0m, Rhombic Pores: 0.3*0.6 mm (2) Roll: T 0.25mm * W 140mm * L 1.0m, Rhombic Pores: 0.6*0.6 mm (3) Roll: T 0.05mm * W 160mm * L 1.0m, Rhombic Pores: 0.8*1.2 mm |
References:
- S. Kim, et al., Promoting lithium electrodeposition towards the bottom of 3-D copper meshes in lithium-based batteries, J. Power Sources, 2020, 472, 228495.
- F. Wang, et al., Three-Dimensional Carbon Nanotube-Coated Copper Mesh as a Current Collector for Graphite Anodes in High-Performance Lithium-Ion Batteries, Processes, 2025, 13, 964.