Polymer batteries and lithium batteries are two kinds of batteries that we often use in our daily life, but for novice Xiaobai, the difference between these two batteries is not very clear. Let's take a look at the two kinds of batteries in detail. What are the differences.
1. Raw materials
This is the most fundamental difference between the two types of batteries. The polymer battery refers to the fact that at least one of the three parts of the battery, the positive electrode, the negative electrode and the electrolyte, is made of polymer materials. Compared with small molecules, The strength of the polymer is higher, and it has good toughness and elasticity. The most common one is to use polymer materials for both the positive electrode and the electrolyte, but there is no such requirement for lithium batteries.
2. Shape
In terms of molding, polymer batteries have greater operability, can be thinned, and can be produced in any area and shape. The reason for this is that the electrolyte in polymer batteries is not in the form of liquid. , which can be solid or colloidal. Lithium batteries use electrolytes, which require a solid outer casing, so the weight of lithium batteries is usually heavier.
3. Security
Most of the polymer batteries that appear on the market are soft pack batteries, which use aluminum-plastic film as the outer casing. Therefore, when the organic electrolyte is used inside the battery, even if the internal temperature is very high, there will be no explosion. The lithium battery has a certain possibility of explosion. If the instantaneous current is large enough, it is prone to short circuit.
The difference between polymer batteries and lithium batteries is probably the same. When purchasing, you need to gather your actual needs, so that you can better use them.
