18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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What is polymer lithium battery

source:Industry News release time:2024-04-30 Hits:     Popular:AG11 battery

  

  The so-called polymer lithium battery refers to a lithium-ion battery that uses polymers as electrolytes, which can be divided into two types: "semi polymer" and "full polymer".

  "Semi polymer" refers to coating a layer of polymer (usually PVDF) on the barrier film to enhance the adhesion of the battery cell, making the battery harder and its electrolyte still liquid electrolyte. The "all polymer" refers to the use of polymer to form a gel network inside the cell, and then inject electrolyte to form an electrolyte. Although "all polymer" batteries still require the use of liquid electrolyte, the amount used is much smaller, which greatly improves the safety performance of lithium-ion batteries. As far as the author knows, only SONY is currently mass producing "all polymer" lithium-ion batteries.

  On the other hand, polymer batteries refer to lithium-ion batteries that use aluminum-plastic packaging film as the outer packaging, commonly known as soft pack batteries. This packaging film consists of three layers, namely PP layer, Al layer, and nylon layer. Because PP and nylon are polymers, this type of battery cell is called a polymer battery.


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