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Follow cell production from mixing and coating to formation and grading, with the key equipment, quality gates, and interactions between chemistry, process settings, and yield.
The question this page answers
Why can the same materials produce different cells in different factories?
Na-ion manufacturing route
Open each operation to see its handoff, equipment, measurement, and first risk. The five existing topic pages remain the main learning routes.
Turn powders and auxiliaries into cathode and anode sheets with controlled loading, porosity, adhesion, and geometry.
Verify identity, moisture, size distribution, and storage state of powders, binders, and solvents.
Create a traceable batch charge while confirming weighing accuracy and container cleanliness.
Bring conductive additive and active material into the liquid phase without persistent dry agglomerates.
Build a stable particle, conductive-additive, and binder network that can be pumped and coated.
Remove harmful agglomerates and bubbles, then feed coating within the validated hold time.
Meter slurry onto aluminum foil with controlled width, edges, and wet-film loading.
Remove water or solvent while controlling binder distribution, pore structure, and electrode stress.
Set thickness, density, and porosity to balance energy, wetting, and mechanical integrity.
Deliver electrode rolls or sheets with assembly-ready dimensions, clean edges, and moisture.
Combine electrodes, separator, electrolyte, and enclosure into a clean, aligned, sealed, and fully wetted cell.
Overlap cathode, anode, and separator while maintaining overhang, coverage, and alignment.
Create a low-resistance, mechanically sound current path with controlled spatter.
Place the electrode assembly into cylindrical, prismatic, or pouch enclosure with insulation and positioning.
Remove internal moisture without damaging materials or separator.
Drive electrolyte into separator and electrode pores to establish continuous ionic paths.
Deliver an unformed cell with controlled containment, insulation, and dimensions.
Establish initial interphases, manage gas, and screen consistency through capacity, resistance, and self-discharge.
Establish SEI/CEI through first cycling while recording voltage, temperature, pressure, and gas trajectory.
Manage formation gas and use rest to observe voltage, thickness, leak integrity, and slow self-discharge.
Grade capacity, resistance, and self-discharge under fixed temperature, SOC, and protocol, then release with traceability.
Section 01
Mixing, dispersion, coating, drying, calendaring, and slitting determine loading, porosity, adhesion, and uniformity. A formulation change usually requires a new slurry and drying process window.
Section 02
After winding or stacking, cells are inserted, welded, sealed, dried, and filled. Moisture, burrs, alignment, welding, and electrolyte wetting are major controls for internal shorts, impedance, and life.
Section 03
Formation establishes interphases and exposes early defects. Grading and aging evaluate capacity, self-discharge, and consistency. Manufacturing data should trace back to material lots, equipment, stations, and inspection results.
Related knowledge
A structured map of cathodes, anodes, electrolytes, separators, current collectors, binders, conductive additives, and presodiation—and how their interactions shape performance, cost, and manufacturing.
Read center →K04Understand cylindrical, prismatic, and pouch cell formats and how cells become deliverable systems through modules, packs, BMS, thermal management, and fire protection.
Read center →K06Build a consistent understanding of energy density, cycle life, rate, efficiency, low-temperature behavior, and safety testing without mixing half-cell, cell, module, and system-level data.
Read center →