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Manufacturing Process Map - 1. Electrode Production COATING & DRYING
MIXING CHALLENGES
slurry quality (uneven dispersion)
Electrode slurries are coated onto the current collector 54% cost of electrode production All other process steps depend on the quality of this step.
Slurries are made by mixing active material, binder, and solvent The different combinations between those three highly affect coating & drying
SLITTING & NOTCHING
CALENDARING CHALLENGES
electrode waste; physical damage to material
Electrodes are densified to a target value
Electrodes are cut into singulated segments
Here it’s important to determine electrode quality and density
Uncoated areas are cut out leaving the parts where tabs will be grounded
of total manufacturing cost
pouch film speed
cylindrical film speed
scrap rate
m/min
m/min
VACUUM DRYING Removes leftover solvent
CHALLENGES
processing time; utilization loss; difficult to measure quality & get quality metrics
CHALLENGES
edge quality (burr defects often occur - dangerous), difficult to inspect at speed; tool wear; lowest OEE of any process because it’s difficult to automate
CHALLENGES
processing time; footprint; takes 12-24 hours
*Graphics courtesy of LG Energy Solution. Reproduced with permission. Sources: LG Energy; BCG
Extracted from the PDF; charts and images may read imperfectly.
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