Slurry

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

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

Binder

A polymer that holds electrode particles to each other and to the foil — typically PVDF for positive electrodes and CMC with SBR for graphite. It stores no charge, so cell designers use as little as the electrode needs.

Coating

Applying slurry to the moving foil at a controlled wet thickness, usually with a slot die, often on both sides. Coating weight per area must be held within about one percent across the web, because every downstream property depends on it.

Mixing

Dispersing active material, conductive carbon and binder in solvent to a uniform slurry with the right viscosity for coating. Order of addition and shear history matter: poorly dispersed carbon leaves particles electrically stranded.

NMP

The solvent that dissolves PVDF binder for positive-electrode slurries. It is toxic and regulated, so plants recover and distil nearly all of it; eliminating it is a main motivation for dry electrode processes.

Solids content

The mass fraction of a slurry that is not solvent, typically 50–70 %. Higher solids means less solvent to dry off, so less energy and a shorter oven, but a thicker slurry that is harder to coat evenly.

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.