Which is better, lithium ion batteries or polymer lithium batteries?

Lithium ion battery and polymer lithium battery which is good?

With the continuous improvement of high and new technology and the constant demand for energy saving and environmental protection, more and more energy saving and environmental protection products have been applied into the market. As for the battery market, lithium battery rapidly replaces the traditional lead-acid battery with various advantages and becomes the main force in the energy storage market. There are many categories of lithium battery, ternary materials, lithium iron phosphate materials, lithium ions, ferric manganate, polymer lithium battery and so on. So lithium ion battery and polymer lithium battery which is better? Please see xiaobian for your analysis.

Lithium ion battery and polymer lithium battery which is better

1. The fundamental difference is raw materials

This is the general source of their various manifestations. Polymer battery refers to the use of polymer materials in at least one of the three components of positive electrode, negative electrode or electrolyte. A polymer is a molecule with a large molecular weight and the corresponding concept is a small molecule. A polymer has high strength, high toughness and high elasticity. At present, the polymer materials of polymer battery are mainly used for anode and electrolyte. (1) polymer battery cathode material in addition to lithium battery inorganic compounds, but also can use conductive polymer; (2) polymer battery electrolyte has polymer electrolyte (solid or colloidal) and organic electrolyte, lithium battery electrolyte (liquid or colloidal)

2. Shape difference

Polymer batteries can be thin, of any size, and of any shape because their electrolytes can be solid or colloidal rather than liquid. Lithium batteries use electrolytes and require a strong outer shell to hold the electrolyte as a secondary package. As a result, lithium batteries gain some weight.

3. Security

At present, most polymers are soft-pack batteries, with aluminum plastic film as the shell, when the internal use of organic electrolyte, even if the liquid is very hot will not explode, because the aluminum plastic film polymer battery USES solid or colloidal state without leakage, only natural rupture. But nothing is absolute. If the current is large enough to cause a short circuit, it is not impossible for the battery to spontaneously ignite or burst, which is the cause of many safety accidents of mobile phones and tablet computers.

4. Cell voltage

Due to the use of polymer materials, polymer batteries can be made into multi-layer combination in the cell to achieve high voltage, and the nominal capacity of lithium battery cell is 3.6v, in order to achieve high voltage in practical use, it is necessary to connect multiple cells in series together to form an ideal high voltage working platform.

If polymer battery and lithium battery are compared with the above characteristics, then the conclusion is certain. However, lithium battery is still the dominant application in the market, which indicates that lithium battery also has relative advantages. We will continue to compare.

5. Electrical conductivity

Polymer battery solid electrolyte ionic conductivity is low, at present, the main is to add some additives to make it into gel electrolyte, to improve the conductivity. This also only increases the ionic conductivity, unlike lithium batteries, which maintain a stable value of conductivity, and is not affected by the quality of auxiliary materials.

6, capacity,

Polymer battery capacity has not been effectively increased, compared with the standard capacity of lithium batteries have been reduced.

7. Manufacturing process

The thinner the polymer battery, the easier it is to produce, and the thicker the lithium battery, the easier it is to produce. As a result, lithium battery can be used in more fields.

8, price

This is the key factor determining the market capacity of the two. Currently, the price of polymer batteries is generally higher than lithium batteries, which affects the market capacity of the two. The ratio of the former to the latter is 1:9.

Therefore, both lithium ion battery and polymer lithium battery have their own advantages and disadvantages, different applications, according to the needs of the choice of suitable battery type.