A few things to know about lithium batteries

The importance of lithium batteries, which are now touted as the heart of mobile devices, is evident. Lithium battery itself is a comprehensive, large concept, lithium battery, lithium ion battery, lithium ion polymer battery, more than a few words which have a lot of articles, the cost difference is also very different.

Lithium battery, in general is the abbreviation of lithium ion battery, but strictly speaking there are great differences with lithium ion battery. Lithium battery is a lithium battery, with lithium metal or lithium alloy as the cathode material, containing pure lithium metal, using non-aqueous electrolyte solution of disposable battery.

Lithium battery is a disposable battery, lithium ion battery is not refers to the repeated charge and discharge of lithium battery? Is not. Broadly, rechargeable lithium batteries consist of a graphite negative electrode, a positive electrode of cobalt, manganese or iron phosphate, and an electrolyte used to transport lithium ions. But there are also disposable lithium-ion batteries, which use lithium metal or lithium embedded materials as the negative electrode.

Lithium ion batteries relative to lithium ion batteries, the extra "ion" word, is to emphasize the transport of "lithium ion" electrolyte. The familiar 18650 battery contains an adsorbed liquid electrolyte, so all 18650 batteries are lithium ion batteries. The reason why the 18650 battery is separately proposed from the lithium ion battery is that SONY based on the needs of industrial standard production, the lithium ion battery with a diameter of 18mm and a length of 65.0mm can be charged and discharged into a pool, which has a wider range of use and is more common. So, in addition to the 18650 standard, there are 16340 batteries.

As for li-ion polymer batteries, the word "polymer" is used to emphasize that the electrolyte is colloidal, solid or semi-solid. Lithium ion polymer batteries are big, "solid polymer" instead of traditional liquid electrolyte is the root cause.

The advantages of using colloidal or solid polymer instead of liquid organic solvent electrolyte are as follows. First, the polymer can be made into any shape to adapt to different equipment with high adaptability and the freedom of industrial design of equipment is guaranteed. Mobile phones, for example (fixed, liquid-electrolyte batteries like the 18650 clearly don't work on today's smartphones). Second, polymer state electrolyte safety is higher: liquid electrolyte in short circuit, in the extreme conditions of high temperature and high pressure will explode, polymer will only expand, bulge out, even the extreme state will not occur explosion combustion.

Through the above brief introduction, you are not lithium battery is probably some impression?

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