Cell Production

From slurry to sealed cell.

A working reference for every stage of lithium-ion cell manufacturing. Choose a stage below, or use the Cell Production dropdown in the nav for quick access anytime.

Overview

Lithium-ion cell manufacturing runs through two parallel electrode lines (anode and cathode) that converge at ...

Design Parameters

Before manufacturing begins, several ratios and targets are fixed at the design stage — most importantly the N...

Slurry

Active material, conductive additive, and binder are mixed with a solvent into a homogeneous slurry...

Coating

The slurry is applied to a metal foil current collector (copper for anode, aluminum for cathode) at a controll...

Drying

The coated electrode passes through a drying oven to remove solvent...

Calendaring

The dried electrode is compressed between rollers to reduce porosity and improve particle-to-particle contact...

Slitting

The calendared electrode roll is cut into precise widths for cell assembly...

Assembly

Assembly brings the anode, cathode, and separator together into a finished cell format...

Formation & Aging

The cell undergoes its first controlled charge cycles, forming the solid-electrolyte interphase (SEI) layer on...

End-of-Line Testing

Every finished cell is tested before shipment...