Binder

Example

Use in Lemonergy

Connect each material with its function.

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

Learn it in Lesson 1B · Cell architecture →

Connected concepts

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

Active material

The part of an electrode that actually stores lithium — graphite on the negative side, an oxide or phosphate on the positive. It makes up most of the electrode coating; the rest is binder and conductive additive.

Conductive additive

Fine carbon, such as carbon black or carbon nanotubes, added in small amounts to an electrode so that electrons can reach every active particle. Many active materials conduct electrons poorly on their own.

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.

Polyacrylic acid

A water-based binder with many carboxyl groups that bond strongly to silicon surfaces, used in silicon-rich negative electrodes where CMC/SBR cannot hold the swelling particles together.

PVDF

The fluoropolymer binder used in most positive electrodes. It dissolves only in solvents such as NMP, which is why positive-electrode slurries are solvent-based and need solvent recovery in the plant.

Slurry

The mixture of active material, conductive carbon, binder and solvent that is coated onto a current-collector foil to make an electrode. Positive slurries use NMP as solvent; graphite slurries are water-based.

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.

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

2. DOE Explains… Batteries

   U.S. Department of Energy

   Topic background · Introductory account of electrodes, electrolyte and conversion between chemical and electrical energy.