Lithium batteries have to know a few things.

Lithium batteries are now known as the heart of mobile devices, showing how important it is. Lithium batteries themselves are a comprehensive and large concept. Lithium batteries, lithium-ion batteries, lithium-ion polymer batteries, and multiple words are all articles. The cost difference is also different.

Lithium batteries, which are generally referred to as lithium-ion batteries, are strictly different from lithium-ion batteries. Lithium batteries are lithium primary batteries that use lithium metals or lithium alloys as negative materials, contain pure lithium metals, and use disposable batteries with non-aqueous electrolyte solutions.

Lithium-ion batteries are disposable batteries. Is a lithium-ion battery a lithium battery that can be recharged and discharged? Not really. A broadly rechargeable lithium battery refers to a graphite cathode, a positive electrode using cobalt, manganese, or iron phosphate, and an electrolyte used to transport lithium ions. However, there are also disposable lithium ion batteries that use lithium metal or lithium embedded material as a negative electrode.

Compared with lithium batteries, the additional word "ion" emphasizes the transport of "lithium ion" electrolytes. Our familiar 18650 battery contains adsorbed liquid electrolytes, so all 18650 batteries belong to lithium-ion batteries. The reason why the 18650 battery was proposed separately from the lithium-ion battery was Sony's need for production based on industrial standards. The lithium-ion rechargeable battery with a diameter of 18mm and a length of 65.0 mm was made and used in a wider and more common range. So, in addition to the 18650 standard, there are 16340 batteries.

As for the extra word "polymer" for lithium-ion polymer batteries, it is emphasized that this is a lithium-ion battery that is colloidal, solid, or semi-solid. The reason why lithium-ion polymer batteries are tall is that "solid polymer" replaces traditional liquid electrolytes.

The advantage of using colloidal or solid polymers instead of liquid organic solvent electrolytes is that polymers can be made to fit different devices in any shape, and the adaptability is high. The degree of freedom of industrial design of the equipment is guaranteed. For example, mobile phones(batteries such as the 18650, which are fixed in shape and use liquid electrolytes, obviously can not be used on today's smartphones). The second is that the electrolyte in the polymer state is more secure: the liquid electrolyte will explode in short circuit and under extreme conditions of high temperature and pressure, and the polymer will only expand and drum out, and no explosion will occur in the extreme state. burning situation.

Through the above brief introduction, is it possible that you have some impression of lithium batteries?

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