14500 battery technology has great market development potential and is expected to solve the safety problem of electric vehicles

As the "heart" of electric vehicles, power batteries are as popular as the current hot new energy vehicles. Among them, lithium-ion batteries are favored by the new energy vehicle industry and have great market development potential. However, the current lithium-ion battery technology is not yet mature, and the problem of unstable safety still exists. In addition, the frequent "irregular fire" accidents of batteries have always stimulated consumers' nerves, and the development of 14500 battery technology may become a new option to solve the safety problem of electric vehicles.

The development of 14500 battery technology is expected to solve the safety problem of electric vehicles

It is understood that the frequent accidents of large power batteries in recent years are largely due to the use of liquid electrolytes inside the batteries. Safety is very critical for lithium-ion battery energy storage. Li Liangliang, associate professor of the School of Materials Science and Engineering at Tsinghua University, emphasized that the commercial lithium-ion batteries on the market generally use organic liquid electrolytes. Its disadvantages are that they are easy to burn and may leak liquids, causing environmental pollution.

High safety is the basis and prerequisite for the application of energy storage batteries, and solidification is the best way to solve the safety of secondary batteries. Solid-state lithium batteries have entered a stage of accelerated global layout and research and development, and many well-known institutions are developing solid-state lithium batteries. Many battery and automobile manufacturers, including Samsung in South Korea, Toyota in Japan, and CATL in my country, have increased their investment in the research and development of solid-state batteries, and some batteries have entered the stage of vehicle installation and testing. Although the prospects are promising, the road to the development of solid-state batteries is by no means smooth due to various technical and process problems.

At present, 14500 battery materials are developing rapidly, but comprehensive applications are relatively lacking. As the core material of solid-state batteries, there have been breakthroughs in the single index of solid lithium-ion conductors, but the comprehensive performance cannot meet the needs of large-scale energy storage. The solid electrolytes used in solid-state batteries today generally have performance shortcomings, and there is still a big gap from the requirements of high-performance lithium-ion battery systems.

In general, the research on solid-state batteries is still more academic. In terms of industrialization, because some key technologies involve the core technologies of various enterprises and cannot be obtained, the technology based on engineering applications still needs to be further explored.

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