Positive and negative reactions of lithium battery electrodes

Introduction The reaction formula of the positive and negative electrodes of the lithium battery Negative electrode: 4 Li – 4 e- = 4 Li+ Positive electrode: 2 SOCl2 + 4 e- = 4Cl- + ?

Positive and negative reactions of lithium battery electrodes

Negative electrode: 4 Li – 4 e- = 4 Li+?

Positive electrode: 2 SOCl2 + 4 e- = 4Cl- + S + SO2↑?

Total reaction: 4 Li + 2 SOCl2 = 4 LiCl + S + SO2↑

Lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. , which is similar to rechargeable batteries. Lithium-ion batteries are different from lithium-ion polymer batteries. The inventor of lithium batteries is Edison. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of microelectronic technology at the end of the 20th century, the number of miniaturized devices has increased day by day, placing high demands on power supplies.electrical functions. Lithium batteries then entered the stage of large-scale practical use.

The positive and negative electrodes of lithium batteries alternate.

The direction of movement of lithium ions when charging a lithium-ion battery is : from the positive electrode to the negative electrode.

A lithium-ion battery is a secondary battery (rechargeable battery) that relies primarily on the movement of lithium ions between positive and negative electrodes to function.

The charging and discharging process of lithium-ion batteries is the process of intercalation and deintercalation of lithium ions. When the battery is charged, lithium ions are generated on the positive electrode of the battery and the generated lithium ions move to the negative electrode via the electrolyte. Likewise, when the battery is discharged, the lithium ions integrated into the layerThe carbon from the negative electrode is released and returns to the positive electrode.

Do you want to ask: Do the positive and negative electrodes of lithium batteries alternate? Not alternately.

The positive and negative electrodes of lithium batteries do not alternate, but are located at both ends of the battery. The lithium battery is a rechargeable battery. The positive electrode is made of lithium cobalt oxide, lithium manganese oxide and other materials, and the negative electrode is made of graphite and other materials.

During the charging process, lithium ions move from the positive electrode to the negative electrode and, after passing through the electrolyte solution, are deposited on the surface of the negative electrode to form lithium. metallic lithium. During the discharge process, lithium ions move from the negative electrode to the positive electrode, escape from thea surface of the positive electrode after passing through the electrolyte solution and return to the positive electrode material.

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