Lithium-ion battery is a kind of transfer charging and discharging work that relies on the transfer between the anode and cathode of the lithium-ion rechargeable battery, when the battery, the movement of lithium ions is generated by the positive electrolyte anode, the more embedded lithium-ion cathode carbon layer, the higher the battery capacity, at the same time, when the battery is discharged, the cathode carbon layer of lithium ion is actively moving, and the lithium ion moves to the anode, the greater the flow, the greater the flow.

Lithium-ion batteries, often referred to as lithium-ion batteries, are used in mobile phones and laptops. Lithium-ion batteries can be easily confused with lithium-ion batteries. The important difference is the different materials they use. Lithium-ion batteries are a type of metal lithium that acts as a negative electrode. Due to the great danger of actual lithium-ion batteries, they are rarely used in everyday electronic life products. The positive electrode of lithium-ion batteries is manganese dioxide or thionyl chloride, and the negative electrode is lithium. During the charge-discharge cycle, lithium is prone to crystallization, resulting in a short circuit inside the battery. Once the battery is assembled, the battery will have voltage and will not need to be recharged. Batteries can also be recharged, but the cycling performance is poor, and early lithium-ion batteries are generally non-rechargeable.

On the basis of lithium-ion batteries, Sony invented a lithium-ion battery with carbon material as the negative electrode and lithium-containing compound as the positive electrode. During charging and discharging, there is no metallic lithium, only lithium-ion. This is a rechargeable lithium-ion battery.

Lithium-ion batteries have the advantages of light weight, large capacity, and no memory effect, and can charge mobile phones at any time. As a result, many of today's digital devices are powered by lithium-ion batteries. Lithium-ion batteries have a high energy density, with a capacity 1.5 to 2 times that of nickel-metal hydride batteries of the same weight, and a very low self-discharge rate. In addition, lithium-ion batteries have almost no memory effect and no toxic substances, which is also an important reason for the widespread use of lithium-ion batteries.