What is the difference between lithium ion battery and lithium battery?18650 rechargeable battery lithium 3.7v 3500mah

　　The so-called lithium battery is the general name of the battery that uses metal lithium as the negative active material, while the lithium ion battery refers to the secondary battery system that uses two different lithium intercalation compounds that can reversibly embed and remove lithium ions as the positive and negative electrodes of the battery, respectively. The similarities between the lithium battery and the lithium ion battery are in the positive electrode and the electrolyte. Both batteries use metal oxide and sulfide as the positive electrode, The organic solvent-inorganic salt system is used as the electrolyte.

　　There is a development process between lithium battery and lithium-ion battery. Lithium battery is a kind of material with lithium metal or lithium alloy as the negative material, and the chemical reaction is oxidation and reduction reaction. Later, Sony Company invented a lithium battery with carbon material as the negative electrode and lithium-containing compound as the positive electrode. During the charging and discharging process, there is no metal lithium, only lithium ion, which is lithium-ion battery.

　　In a strict sense, the working mechanism of lithium battery and lithium-ion battery is different. Lithium battery is a primary battery, also known as lithium primary battery, which can be discharged continuously or intermittently. Some lithium batteries can be used as batteries for storage facilities, such as applications in water power, wind power and solar power stations. The lithium-ion battery is a secondary battery and can be used repeatedly.

　　From the perspective of use, lithium battery and lithium-ion battery are also different in strict sense. The negative electrode of lithium battery is made of metal lithium, and the positive electrode is made of MnO2, SOCl2, etc. After entering into practical use in the 1970s, it is mainly used in some military and civilian small electrical appliances.

　　The application of lithium-ion batteries is more extensive, such as mobile phones, cameras, cameras, laptops, etc. The application of large-capacity lithium-ion batteries in electric vehicles has also entered the process of industrialization.

　　From the perspective of the development trend of lithium battery and lithium ion battery, the application field of lithium ion battery is expanding, while the application field of lithium primary battery is shrinking.

　　Lithium batteries and lithium-ion batteries may be confused in use, but there is a fundamental difference: there is no lithium metal in the reaction of lithium-ion batteries, only the movement of lithium ions between the positive and negative electrodes.

　　Therefore, it is also known as "rocking chair battery". People can respect the customary name of lithium battery and lithium ion battery in life, but this does not prevent people from understanding the theoretical difference between the two.

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