Intercalation refers to the reversible insertion and extraction of ions (such as Li⁺) into and out of the lattice structure of electrode materials without damaging the basic crystal framework of the material. This process is the core mechanism for most rechargeable batteries (especially lithium-ion batteries) to achieve energy storage and release.
Note: The embedding process is not a chemical reaction, as it does not produce new substances and is primarily a process of physical property changes. If the embedding is too deep or the rate is too fast, it may cause electrode expansion and structural collapse, reducing the cycle life.
