What methods can improve the cycle life of lithium metal batteries?

As we all know, the core component batteries of most of the current pure electric vehicles are lithium batteries. As consumers' requirements for range continue to increase, the performance of batteries is facing more tests. Although lithium metal has a high capacity density and good electrical conductivity, but in the process of use will still face lithium metal dendrite and dead lithium and other issues, which will not only affect the battery cycle, there are also certain security risks. So, today we will explore the lithium metal battery is necessary to re-emerge?

First of all, when lithium ion electrolysis occurs in the working process, the electrolyte mainly contains ester solvents. Ester solvents have high reactivity and are easily decomposed, so they are less stable in lithium batteries. However, another substance, ether solvent, has better stability and also inhibits the growth of lithium metal dendrites. Therefore, we can see that the ester solvents in lithium batteries produce more side effects during the reaction process, resulting in a much lower number of battery cycles and a corresponding reduction in life.

Secondly, we know that lithium metal has a very active nature and strong reducibility. In the deposition process, the contact area between lithium metal and electrolyte becomes very important. This substance can well reduce the contact area between lithium metal and electrolyte, and it can also avoid some side effects, thus promoting the growth of cycle life.

In addition, in order to improve the stability and cycle life of lithium metal batteries, the composition ratio of substances within the electrolyte can also be improved. Increasing the proportion of substances with strong stability can improve the density and other properties of the battery.

In short, to improve the cycle life of lithium metal batteries, we need to start from several aspects. First, to improve the stability of the ester solvent in the electrolyte; second, to improve the deposition characteristics of the lithium metal itself; and finally, to improve the stability and cycle life of the battery by improving the composition ratio of the substances in the electrolyte. Only through these efforts can we realize the resurgence of lithium metal batteries to provide longer range and better performance for electric vehicles.