Lithium ion battery uses carbon material as the negative electrode and lithium-containing compounds as the positive electrode. There is no lithium metal, only lithium ion. This is the lithium ion battery. Lithium-ion battery refers to the lithium ion embedded compound as a general term for the cathode material battery. The charging and discharging process of lithium ion battery is the embedding and disembedding process of lithium ion.
The embedding and deembedding of lithium ions are accompanied by the embedding and deembedding of electrons equivalent to lithium ions (the positive electrode is customarily represented by embedding or deembedding, while the negative electrode is represented by insertion or deembedding). In the process of charging and discharging, lithium ions are inserted/deinserted and inserted/deinserted back and forth between the positive and negative electrodes, which is figuratively called "rocking chair battery".
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