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Glossary

The Kallanish Glossary aims to be a useful resource for complex industry specific terminology. We are constantly adding to our glossary, so if you have a suggestion or amendment please do get in touch.

Silicon

Power Materials

Silicon is a chemical element with the symbol Si and atomic number 14. Silicon is used in a subclass of lithium-ion batteries and they are called Lithium–silicon batteries. These batteries use a silicon-based anode and lithium ions as the charge carriers.  Silicon has ten times higher capacity than graphite so replacing graphite with silicon could lead to lighter and safer batteries. However, silicon can take on more lithium than graphite, it tends to expand about 300 percent in volume, causing the anode to become electrically insulating and break apart.

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