How To Distinguish Lithium Polymer Batteries From Lithium Ion Batteries?

Lithium polymer batteries and lithium-ion batteries are both relatively common battery types, but they have different characteristics in terms of battery chemistry, performance and safety. Let's take a look at how to differentiate between these two types of batteries.

1. Chemical structure: The anode and cathode of lithium polymer batteries are made of polymer materials; while the anode of lithium-ion batteries generally uses graphite materials, and the cathodes use metal oxide materials.

2. Density: The energy density of lithium polymer batteries is higher than that of lithium-ion batteries, and the energy loss is smaller. They are generally used in high-efficiency battery equipment, such as aerospace, electric vehicles and other fields. However, due to the polymer material used, there are limitations on temperature and battery capacity, and it cannot withstand high temperature and high-capacity output.

3. Volume: Lithium polymer batteries are small in size. The volume of batteries with the same capacity is about 30% smaller than other similar batteries. Therefore, it is more suitable to be used in small devices such as mobile phones and smart wearable devices, while lithium-ion batteries are slightly smaller in size. Large, yet adaptable to most mobile devices.

4. Charging and discharging performance: Lithium polymer batteries charge quickly and can quickly release a large amount of power. However, due to their special chemical structure, there are limitations on charging and discharging speeds, and a rectifier is required to adjust the charging and discharging current and voltage; lithium-ion batteries There is no limit on the charging and discharging speed.

It is difficult to definitely evaluate which type of battery is better. Both types have their own advantages. If we must draw a conclusion, it is that polymer batteries are more suitable for small-scale use, while lithium batteries are more suitable for small-scale use. Suitable for large-scale use, if polymer batteries can break through cost and design limitations, then it may represent the development direction of batteries, because its environmental protection and safety are more in line with the trend. In specific use, it is necessary to select the appropriate battery type according to the product requirements and design to achieve the best use effect.

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