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Lithium ion batteries are widely used in various fields because of their light weight, no memory effect, green and environmental protection. In addition, lithium batteries also have the advantages of high energy density and low self discharge rate.
The life of lithium battery is an important basis for evaluating the performance of lithium battery. The methods to improve battery lifesapn include reasonable ratio of positive and negative materials, selection of appropriate electrolyte, setting reasonable service conditions and scope, etc.
Lithium batteries can be divided into different lithium batteries according to different classification standards. According to the classification of raw materials, it is mainly divided into nickel cobalt acid lithium ion battery, manganese acid lithium ion battery, nickel acid lithium ion battery, and iron phosphate lithium ion battery.
How long lithium ion can be used refers to the cycle life of lithium battery. A complete charge and discharge indicates a cycle life. The cycle life of the battery is determined by the performance, use method, temperature and other factors of the battery.
During the entire battery charging process, the lithium-containing compound of the positive electrode changes. Lithium loses an electron and becomes lithium ion (Li+), and the lithium ion is extracted from the positive electrode material. The electrolyte filled between the two poles acts as a traversing medium, allowing lithium ions to move from the positive electrode to the negative electrode, and finally be embedded in the negative electrode material at the other end of the battery.
At present, the more mature main energy storage batteries are: lead-carbon batteries, lithium batteries, flow batteries, sodium-sulfur batteries, and so on.The rapid development of the lithium battery industry and the decline in costs are driving energy storage applications.Lead-carbon battery is a capacitor type lead-acid battery.Sodium-sulfur energy storage performance is good.
All-solid-state lithium batteries are a perfect substitute for lithium-ion batteries and are the focus of the next round of competition in the battery industry in various countries. Japan has spent a lot of energy on all-solid-state lithium batteries, hoping to turn the tide in the power battery licensing game. All-solid-state lithium batteries are the focus of the next round of competition in the industry of various countries.