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The difference between lithium ion batteries and lithium polymer batteries

The difference between lithium ion batteries and lithium polymer batteries

The differences between lithium ion battery and lithium polymer battery include different structural characteristics, different appearance, different energy density, different thickness, and different safety performance.

Structural characteristics are not the same: lithium polymer battery can also be called polymer lithium ion battery, so, we should be easy to understand, polymer lithium ion battery is also a kind of lithium ion battery. The two batteries use different electrolytes in their interiors. The polymer lithium-ion battery electrolyte uses a solid, that is, a solid electrolyte, which also looks semi-colloidal. Lithium-ion batteries, by contrast, use liquid electrolytes.

The shape is different: most mobile power supplies on the market use 18650 cylindrical lithium-ion batteries. Lithium-ion polymer batteries are mostly blocky, or rectangular. If you choose to buy large capacity power bank usually use polymer lithium batteries.

Energy density and thickness are not the same: Compared with lithium-ion batteries, polymer lithium-ion batteries using solids have the characteristics of ultra-thin shape. At this level of development, the minimum thickness of polymer lithium-ion batteries can reach 0.5mm. Also can be arbitrary shape, more suitable for the area of the product. Greatly improve the battery's shape and flexibility. Even in lithium-ion batteries and lithium-polymer batteries the volume is the same. But polymer lithium-ion batteries have a higher energy density and are lighter.

Safety performance is not the same: polymer lithium battery uses aluminum film as the shell, even if the internal structure of the use of organic electrolyte, it will not easily occur safety risks, the worst case is only to produce battery bulge.

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