Aluminium foil

Example

Use in Lemonergy

Connect each material with its function.

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Connected concepts

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Copper foil

The negative current collector, typically 6–10 µm thick. Copper is used because it is stable at the low potential of a graphite electrode, where aluminium would alloy with lithium.

Current collector

The thin metal foil that carries electrons between an electrode and the external circuit — usually copper on the negative side and aluminium on the positive side.

Passivation

The formation of a surface film that slows further reaction. In lithium-ion cells, the SEI passivates the graphite negative electrode.

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.