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Lithium battery brief introduction

From:CTECHI GROUP Limited     Release time:2019-10-14

Overview:Lithium batteries are also divided into two categories: non-rechargeable and rechargeable. A non-rechargeable battery is called a disposable battery. It can only convert chemical energy into electrical energy at one time, and cannot restore electrical energy back to chemical energy (or poorly restored performance).

Lithium battery brief introduction

Lithium batteries are also divided into two categories: non-rechargeable and rechargeable. A non-rechargeable battery is called a disposable battery. It can only convert chemical energy into electrical energy at one time, and cannot restore electrical energy back to chemical energy (or poorly restored performance). A rechargeable battery is called a secondary battery (also called a battery). It converts electrical energy into chemical energy and, when used, converts chemical energy into electrical energy. It is reversible, such as the main feature of lithium-ion batteries for electrical energy.

The positive electrode material of lithium ion battery usually has lithium active compound composition, and the negative electrode is carbon with special molecular structure. The main component of common positive electrode material is LiCoO2. When charging, the potential applied to the two poles of the battery forces the positive electrode compound to release lithium ion. The embedded negative electrode molecules are arranged in carbon in a sheet structure. During discharge, lithium ions are precipitated from the carbon of the sheet structure and recombined with the compound of the positive electrode. The movement of lithium ions generates an electric current.

Although the principle of chemical reaction is very simple, in actual industrial production, there are many practical problems to be considered: the material of the positive electrode needs additives to maintain the activity of multiple charge and discharge, and the material of the negative electrode needs to be designed at the molecular structure level. It contains more lithium ions; the electrolyte filled between the positive and negative electrodes needs to have good conductivity and reduce the internal resistance of the battery, in addition to being stable.


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