Comparison of Li-ion Battery and Polymer Li-ion Battery

With the continuous improvement of high and new technologies, and because of the constant demand for energy conservation and environmental protection, more and more energy conservation and environmental protection products have been applied to the market. In the battery market, lithium batteries have rapidly replaced traditional lead-acid batteries with various advantages. Become the main force of the energy storage market. There are many types of lithium batteries, such as ternary materials, lithium iron phosphate materials, lithium ions, ferromagnetic iron, and polymer lithium batteries. Which is better, lithium-ion batteries or polymer lithium-ion batteries? Please look at the small editor for everyone's analysis.

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

1, the fundamental difference is raw materials

This is the overall source of the various manifestations of the two. Polymer batteries refer to the use of polymer materials in at least one of the three components: positive, negative, or electrolyte. Polymer means large molecular weight, and its corresponding concept is small molecules. Polymer has high strength, high toughness and high elasticity. At present, the polymer battery polymer materials developed are mainly used for positive poles and electrolytes. 1 In addition to the inorganic compounds of lithium batteries, polymer battery positive electrode materials can also use conductive polymer polymers; The electrolytes of polymer batteries include polymer electrolytes(solid or colloidal) and organic electrolytes. Lithium batteries use electrolytes(liquids or colloids)

2, plastic difference

Polymer batteries can be thin, arbitrary, and arbitrary, because their electrolytes can be solid but not liquid. Lithium batteries use electrolytes and require a strong shell as a secondary packaging to accommodate electrolytes. Therefore, this also increases the weight of lithium batteries.

3, security aspects

Most of the current polymers are soft-pack batteries. Aluminum plastic membranes are used as shells. When organic electrolytes are used internally, even if the liquid is very hot, they do not explode because the aluminum plastic membrane polymer batteries are solid or plastic and have no leakage, but they are naturally broken. But nothing is absolute. If the instantaneous current is large enough and there is a short circuit, it is not impossible for the battery to spontaneously ignite or burst. The safety accidents of mobile phones and tablets are often caused by this situation.

4, core voltage

Since polymer batteries use polymer materials, they can be made into multi-layer combinations in the core to reach Gaodianya, and the nominal capacity of the lithium battery core is 3.6 V. To achieve Gaodianya in practical use, It is necessary to connect multiple cores in series to form an ideal Gaodianya working platform.

If the above features are better than polymer batteries and lithium batteries, then the conclusion is certain. However, in the market is still the application of lithium batteries in the main position, which shows that lithium batteries also have comparative advantages, we continue to compare.

5, conductivity

The solid electrolyte ion conductivity of polymer batteries is low. At present, some additives are added to make it a gel electrolyte to improve the conductivity. This only increases the Ionic conductivity, unlike the lithium battery's conductivity to maintain a stable value without being affected by the quality of the auxiliary material.

6, capacity

The capacity of polymer batteries has not been effectively increased, and it has also been reduced compared to standard lithium batteries.

7, manufacturing process

The thinner the polymer battery is, the thicker the lithium battery is, the better the production, which makes the lithium battery more widely available.

8, price

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

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