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Liquid lithium ion battery vs polymer lithium ion battery

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Battery news Home Battery news Liquid lithium ion battery vs polymer lithium ion battery

Liquid lithium ion battery vs polymer lithium ion battery

Author:evenbabyPublish:2019-09-10View: 1,054

Mobile phone lithium battery everyone listens a lot, but how is it classified? In fact, in the field of electronic products, lithium batteries are commonly used in liquid lithium-ion batteries and polymer lithium ions.
Mobile phone lithium battery everyone listens a lot, but how is this thing classified (the following lithium-ion battery is abbreviated as lithium battery)?
In fact, in the field of electronic products, lithium batteries are commonly used in liquid lithium-ion batteries and polymer lithium ions. (18650 refers to the battery with a diameter of 18mm and a length of 65mm, a cylindrical battery. Although most of the 18650 on the market is liquid lithium battery, any statement that “polymer lithium battery is safer than 18650 is wrong” is wrong.)
What are the different among its?
First of all, it should be noted that the working principle of the two is the same. Both of them are charged and discharged by the process of lithium ion intercalation and deintercalation. Lithium ions are embedded in the negative electrode for charging, and lithium ions are deintercalated from the negative electrode to discharge.
As can be seen from the above figure, the lithium battery contains three basic elements: the positive electrode, the negative electrode, and the electrolyte (the substance filled between the two stages). Of course, there is a diaphragm that prevents direct contact between the positive and negative electrodes (of course, lithium ion). It can pass smoothly, the diaphragm is not good, it will cause a short circuit and cause an explosion~~)

Liquid lithium ion battery vs polymer lithium ion battery
  1. Differences in materials: In the polymer lithium battery, at least one of the above three basic elements must be made of a polymer material, such as an electrolyte solution, which is replaced with polystyrene, polymethacrylic acid, and the like.
  2. Differences in electrolyte morphology: Liquid lithium-ion batteries mostly use liquid organic solvents + conductive salts, while polymer lithium batteries replace these electrolytes with colloids/solids (see the battery type for specific components).
    Are they each arrogant?
  3. Energy density: The greater the energy density, the more capacity a unit volume can have. The polymer lithium battery has improved the material/thickness of the negative electrode (anode), separator, etc., and the energy density has now reached 600 Wh/L+.
  4. Customizable degree: polymer lithium battery is easier to be thinner and lighter in shape, and it is easier to customize into various shapes without wrapping with metal protective case.