Lithium ion batteries are generally used in cobalt lithium, lithium nickel cobalt manganese, lithium iron phosphate, negative extremely graphite, electrolytic solution is LIPF6+EC+DMC, and shells are packaged in aluminum -plastic film. During charging, lithium ions are removed from the lattice of the positive polarized oxides, migrate through the organic electrolyte to the layer -shaped negative surface and embedded in the graphite material lattice. At the same time, the remaining electrons reach the negative electrode from the external circuit. Contrary to discharge, lithium ions are removed from the graphite lattice back to the positive oxide lattice. In the case of normal charging and discharge, the embedded and departure between the lithium ions in the laminar structure of graphite and oxide generally only cause changes in laminar spacing without causing the destruction of the crystal structure. The chemical structure is basically not changed, so in terms of the reversibility of the charging and discharge reaction, lithium -ion battery is an ideal reversible battery. The process of lithium ions enters the electrode is embedded, and the process from the electrode is called out of the process. When the charging is charged, the lithium ion is embedded in the positive and negative electrode of the battery — out of the battery, just like a rocking chair in the positive and negative pole. Therefore, some people call the image of lithium ion batteries as "rocking chair batteries".

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