Carbon nanotubes

Example

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Connect each material with its function.

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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.

Electronic conductivity

How readily a material conducts electrons. Current collectors and carbon additives supply it in an electrode because most active materials, LFP above all, conduct electrons poorly; a good electrolyte should have none, or it would self-discharge the cell.

Silicon anode

A negative electrode that uses silicon, which alloys with lithium and stores roughly ten times more charge per gram than graphite but swells by up to 300 %. Today it is blended into graphite at a few percent to limit the swelling.

References & further reading

Further reading on this topic

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

1. DOE Explains… Batteries

   U.S. Department of Energy

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

2. Current and future lithium-ion battery manufacturing

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

   Topic background · Electrode preparation, cell assembly, formation and manufacturing trade-offs.