The difference between lithium polymer batteries and lithium ion batteries

The principle is different, let's start with lithium batteries and lithium ion batteries (polymers are also a kind of lithium ion battery).

Lithium battery is a kind of cathode material made of lithium metal or lithium alloy. Due to the very active chemical characteristics of lithium metal, the processing, preservation and use of lithium metal have very high requirements on the environment. The negative electrode of lithium ion battery is graphite intercalated layer structure material. Lithium ion moves in the positive and negative electrode in the battery, so it is much safer than lithium battery.

Lithium ion batteries and lithium polymer batteries,

Lithium ion battery electrolyte is liquid, polymer battery electrolyte is gel or solid, it is safer.

First of all,

We now of the lithium battery, according to the scientific name, should call for lithium secondary battery, have corresponding anode materials, and a lithium battery, a lithium battery mainly for another, this kind of battery generally use liquid electrolyte, now is mainly based on LiPF6, LiClO4 soluble in DMC: EC (v: v = 1:1) electrolyte, some also on the modification, but is still the liquid battery.

Polymer lithium-ion batteries, from the Angle of the internal battery materials, mainly is the internal is a polymer electrolyte, here is generally gel electrolyte and solid electrolyte, if memory serves, south koreans have been published to the PEO - ionic liquid electrolyte of gel battery, don't know if GalaxyRound or LGGFlex have used such a battery.

The second

Lithium polymer battery box lithium battery is slightly different in the packaging, lithium battery is generally steel shell (18650 or button type 2320), and lithium polymer battery with aluminum plastic packaging film as the packaging, that is, soft pack battery.

Of course, lithium batteries are also made up of solid electrolytes such as LiPON, NASICON, perovskite and LiSICON, which are ceramic electrolytes with high conductivity or glass electrolytes made up of amorphous substances. If they are to be classified, they may be classified as lithium secondary batteries, but this is an extension of the concept

Finally, lithium battery can be roughly divided into two categories: lithium metal battery and lithium ion battery. Lithium-ion batteries are typically non-rechargeable and contain metallic lithium. Lithium-ion batteries do not contain metallic lithium and are rechargeable. Lithium batteries, lithium ion batteries and lithium polymer batteries are different in principle.

Lithium polymer battery refers to all solid or gel too electrolyte lithium ion battery. Aluminum - plastic composite film is generally used as packaging materials. There are only two real lithium-ion polymer batteries in the world. One is SONY of Japan and the other is ATL of China

Lithium battery is generally refers to aluminum shell battery, electrolyte for liquid, aluminum shell packaging materials.

Lithium polymer batteries are safer than lithium batteries. Lithium polymer battery is lithium ion battery upgrade products. Compared with the popular lithium ion battery, it has the advantages of large capacity, small size (thin), safety (won't explode) and so on. However, as the replacement of the entire industrial chain takes some time, its cost (cost) is still relatively high, only used in high-end digital products (ultra-thin laptops, etc.).

It can be predicted that in the future 5-10 years, lithium polymer battery will replace the existing lithium ion battery! In fact, in the electronics industry more developed countries such as Japan and South Korea lithium polymer battery penetration rate has reached a certain level, but China is still relatively backward in this respect, let us wait and see! In the near future, the mobile phone with lithium polymer battery will be cheaper. I must replace it with a safer one.

Li-polymer battery (li-polymer battery) is a new type of battery, which has many obvious advantages, such as high energy density, miniaturization, ultrathin and light weight, high security and low cost. In terms of shape, lithium polymer batteries have the characteristics of ultrathin, which can meet the needs of various products, and be made into batteries of any shape and capacity. The minimum thickness of such cells can be up to 0.5mm. Compared with li-ion batteries, li-polymer batteries have the following characteristics:

1. There is no battery leakage problem. The battery does not contain liquid electrolyte and USES colloidal solid.

2. Can be made into thin battery: 3.6v400mah capacity, its thickness can be as thin as 0.5mm.

Batteries can be designed in many shapes.

4. The battery can be bending deformation: polymer battery maximum bending around 90 °.

5. Can be made into a single high voltage: liquid electrolyte battery can only be a few batteries in series to get high voltage, and polymer battery because there is no liquid itself, can be made into a single multi-layer combination to achieve high voltage.

6. The capacity will be twice that of a lithium-ion battery of the same size.