ECS-RS Economic Hand-Held Disk Electrode Cutter (φ10-20 mm) for Coin Cells, ERSCCEHHDEC

A hand-held disk electrode cutter (often referred to as a compact or manual disc punch) is a staple tool in coin cell (CR2016, CR2025, CR2032) prototyping. It allows researchers to quickly punch precise, burr-free circular disks from current collector foils coated with cathode or anode materials.

The standard sizes depend on the specific component of the coin cell being fabricated: (1) Cathode Disks: Typically φ12 mm or φ13 mm (to ensure it fits cleanly inside the coin cell cup without shorting the edges). (2) Anode Disks: Typically φ14 mm to φ15 mm (slightly larger than the cathode to prevent lithium dendrite growth and alignment-induced short circuits around the edges). (3) Separator Disks: Typically φ16 mm, φ18 mm, or φ19 mm (must completely overlap both electrodes to isolate them).

References:

S. Chen, et al., Critical Parameters for Evaluating Coin Cells and Pouch Cells of Rechargeable Li-Metal Batteries, Joule, 2019, 3, 1094-1105

T. Marks, et al., A Guide to Li-Ion Coin-Cell Electrode Making for Academic Researchers, J. Electrochem. Soc., 2011, 158, A51.