Analysis of the role and research of lithium ion battery

The role and research of lithium ion battery

Lithium-ion batteries are currently available in liquid lithium-ion batteries (free) and polymer lithium-ion batteries (PLB). Among them, the liquid lithium ion battery refers to a secondary battery in which the Li+ Embedded compound is a positive electrode or a negative electrode. The positive electrode is a lithium compound LiCoO2 or LiMn2O4, and the negative electrode is a Lithium-carbon interlayer compound. Lithium-ion battery is an ideal energy source for the development of the 21st century due to its high operating voltage, small size, light weight, high energy, no memory effect, no pollution, low self-discharge and long cycle life.

In 1992, Sony successfully developed lithium-ion batteries. Its practicality has greatly reduced the weight and size of portable electronic devices such as mobile phones and notebook computers. The use time is greatly extended. Since the lithium ion battery does not contain heavy metal chromium, it greatly reduces environmental pollution compared with the nickel chromium battery.

Various materials have been studied in order to develop more excellent varieties. This creates an unprecedented product, such as lithium sulfur dioxide batteries and lithium thionyl chloride batteries. Their positive active materials are also solvents for the electrolyte. This structure can only occur in the electrochemical system of non-aqueous solutions. Therefore, the research of lithium batteries has also promoted the development of electrochemical theory of non-aqueous systems. In addition to the use of various non-aqueous solvents, research on polymer thin film batteries has also been conducted.

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