Electrolyte filling

Example

Use in Lemonergy

Place operations and quality checks in process order.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Learn it in Lesson 3 · Cell production →

Connected concepts

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Cell assembly

The second phase of cell production: building the electrode–separator stack by winding or stacking, welding the tabs, inserting it into the case and filling the electrolyte. Most of it happens in the dry room.

Dry room

A production room whose air is kept extremely dry — dew points around −30 °C to −60 °C — so that no moisture reaches the cell while the electrolyte goes in. Water would react with the salt LiPF₆ to form hydrofluoric acid.

Electrolyte

The ion-conducting medium between the electrodes. In a liquid-electrolyte cell it fills the pores of both electrodes and the separator, so it is not a separate structural layer.

Wetting

The soaking of electrolyte into every pore of the electrodes and separator after filling. It can take hours or more; a pore left dry is electrode area that never works properly.

References & further reading

Technical references

1. Current and future lithium-ion battery manufacturing

   Yangtao Liu, Ruihan Zhang, Jun Wang, Yan Wang · iScience · 2021

   Technical reference · Electrode preparation, cell assembly, formation and manufacturing trade-offs.