What is the difference between a polymer battery and a lithium battery

by:CTECHi     2021-07-24

Strictly speaking, a polymer battery is called a 'lithium polymer battery' (Li-polymer, also known as a polymer lithium battery): it is also a type of lithium ion battery, but it is similar to a liquid lithium battery (Li-ion) It is a new type of battery with many obvious advantages such as high energy density, smaller size, ultra-thin, lighter weight, and high safety. In terms of shape, lithium polymer batteries have ultra-thin features, and can be made into batteries of any shape and capacity to meet the needs of various products. The minimum thickness that this type of battery can reach can reach 0.5mm. Its nominal voltage is the same as Li-ion's nominal voltage of 3.7V, and there is no memory effect. 'Lithium battery' is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M.S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now become the mainstream. The main differences between the two are: 1. The polymer battery has no battery leakage problem. The battery does not contain liquid electrolyte and uses colloidal solids. The lithium battery is liquid. 2. The polymer battery can be made into a thin battery: with a capacity of 3.6V400mAh, its thickness can be as thin as 0.5mm. Lithium batteries cannot be very thin. 3. Polymer batteries can be bent and deformed: polymer batteries can be bent up to about 900. Lithium batteries cannot be bent or bent too much. 4. Polymer batteries can be made into a single high-voltage: liquid electrolyte batteries can only be connected in series to obtain high-voltage, polymer batteries. 5. Since the polymer battery has no liquid itself, it can be made into a multi-layer combination in a single cell to achieve high voltage. 6. The capacity of a polymer battery will be twice as high as that of a lithium-ion battery of the same size.

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