How do lithium batteries work? 1 article accurate make it clear!

How do lithium batteries work

Many users do not understand the working principle of lithium batteries. This article combines the characteristics of electronics and lithium ions to talk about related knowledge.

How do lithium batteries work?

Lithium batteries work are developed by taking advantage of the characteristic that “lithium ions can carry electrons”. Lithium batteries are generally made of “lithium compounds” and “carbon materials” inside. Lithium ions can be embedded or deintercalated in these two materials. During the process of this phenomenon, electrons will also migrate with the lithium ions.

This process can be understood as the process of battery charging and discharging. As for when the electrons carried by lithium ions are embedded or deintercalated. It depends on the state of the battery, but one thing needs to be clarified, lithium batteries work is the principle, the material is the material, lithium batteries work is basically the same. However, the structure, materials, and applied technologies within the battery are different, and this will determine the overall performance of the battery, especially lithium batteries.

Charging and discharging process

As we all know, batteries are divided into positive and negative electrodes. The positive electrode is generally made of “lithium compound”, while the negative electrode is made of “carbon material”. The areas where the positive and negative electrodes are located are not connected, and there will be a separator and electrolyte in the middle. Based on the different battery brands, structures, and application technologies, the overall structure and volume of the battery, as well as its internal distribution, will vary slightly.

Electric vehicles rely on how lithium batteries work for long-lasting energy storage
Electric vehicles rely on how lithium batteries work for long-lasting energy storage

Lithium ions are generally generated in the positive electrode area, and then carry electrons through the electrolyte to the negative electrode area, and the intercalation phenomenon occurs. This phenomenon is reversible, which is the so-called charge and discharge process, which means that the lithium ions in the negative electrode area can also return to the positive electrode area, which is the so-called deintercalation.

Under normal circumstances, people refer to lithium ions carrying electrons into the negative electrode area as charging, and vice versa as they move from the negative electrode to the positive electrode, which is called discharge. But there is another point that cannot be ignored, that is, there must be a “load” in the entire circulation line, which is the so-called power-consuming equipment.

Lithium battery structure

If you look carefully at the structure of lithium batteries, it is more complicated. But if you look at the macro structure, it can be divided into three parts, usually divided into the positive electrode area, which is also the area where lithium ions are generated and set off, and the negative electrode area, which is the area where lithium ions are intercalated or deintercalated.

However, it should be noted that lithium ions can also be intercalated or deintercalated in the positive electrode, but the positive electrode and the negative electrode are not interconnected (there are multiple channels through which lithium ions can pass), and there is a separator. Inside this diaphragm is the electrolyte (don’t take it too seriously, for the sake of ease of understanding). Only lithium ions carrying electrons can shuttle through the electrolyte and transport electrons back and forth.

The battery bulging phenomenon that occurs in daily life is also related to the shuttle of lithium ions. If lithium ions carry a large number of electrons to the negative electrode area. If these charged lithium ions cannot be stored, overcharge and bulging will occur, and vice versa. Although there are positive and negative directions, lithium batteries work the same.

Conclusion: Lithium batteries work no differently from lead-acid and nickel batteries, except that after years of research, it has been found that lithium ions are more suitable as an electron transfer medium than the positive and negative electrode materials in other batteries.It can be seen that lithium batteries have many advantages.

Understanding how lithium batteries work is crucial for optimizing energy storage systems
Understanding how lithium batteries work is crucial for optimizing energy storage systems

Related Posts