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The cathode of lithium-ion battery is made of carbon materials, such as graphite. The positive electrode is a transition metal oxide containing lithium, such as LiMn2O4. Electrolytes are organic solutions containing lithium salts. Usually, lithium-ion batteries do not contain metallic lithium
Lithium ion batteries are mainly composed of cathode materials, electrolyte and cathode materials. The chemical activity of anode material graphite is close to that of metal lithium in the charged state. At high temperature, the SEI film on the surface decomposes, and the lithium ion embedded in graphite and electrolyte
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