Analysis of the maturity and characteristics of thin-film all-solid-state lithium-ion battery technology

The progress of human society is inseparable from the efforts of all walks of life in society, and the upgrading of various electronic products is inseparable from the efforts of our designers. In fact, many people do not understand the composition of electronic products. Solid-state thin-film lithium-ion battery. Using solid electrolytes instead of organic liquid electrolytes to prepare all-solid-state lithium-ion batteries is the fundamental way to solve the current safety problems of lithium-ion batteries. The thin-film all-solid-state lithium-ion battery is a new type of lithium-ion battery developed on the basis of the traditional lithium-ion battery. The research progress of all solid-state thin-film lithium-ion batteries The key materials of thin-film lithium-ion batteries mainly include positive electrode membrane, electrolyte membrane and negative electrode membrane. In thin-film all-solid-state lithium-ion batteries, electrolytes play a vital role, directly affecting the charge-discharge rate, cycle life, self-discharge, safety, and high and low temperature performance of thin-film batteries. Therefore, the solid electrolyte membrane is required to have high ionic conductivity, low electronic conductivity, wide potential window, and good chemical and mechanical stability. The research and commercialization of thin-film all-solid-state lithium-ion batteries in my country started late. In recent years, the Ru0026D and industrialization of thin-film all-solid-state lithium-ion batteries have been accelerating, and the corresponding application market has been gradually expanding. The research on three-dimensional thin-film lithium-ion batteries is still in its infancy. Most of the research is still in the state of conceptual design and electrode preparation. There are few reports on complete three-dimensional thin-film lithium-ion batteries. Regarding the all-solid-state thin-film lithium-ion battery with lithium metal as the negative electrode, the construction of the three-dimensional nanostructure of the positive electrode material is particularly important, and its performance directly determines the performance of the entire battery. However, the difficulty in the construction of the three-dimensional positive electrode material has always restricted the development of the three-dimensional solid-state thin-film battery Research and development. Solid-state lithium-ion batteries can prepare flexible batteries and thin-film batteries, and get faster application in 3C product design. In addition, the improvement of thermal stability has accelerated the application of thin-film lithium-ion batteries in special applications, such as implantable and smart medical equipment, wireless sensors and other applications that have huge potential markets. The technical maturity of thin-film all-solid-state lithium-ion batteries in my country is still far behind the international level. The specific manifestations are as follows: ① my country started late in the research and development of key material systems for thin-film all-solid-state lithium-ion batteries, involved in the large-scale preparation of thin-film batteries, battery design and manufacturing battery packs, battery sealing and protective layers, packaging technology, failure mechanisms, There is also a lack of systematic research on performance evaluation standards; ②In terms of hardware such as vacuum coating equipment and sputtering targets and other necessary raw materials required for the preparation of thin-film batteries, compared with international companies such as American Applied Materials and Japan’s Afac, my country lacks relevant Ru0026D related experience. There is very little publicly reported information; ③ Regarding the application of thin-film batteries, foreign companies such as Cymbet have realized the application of thin-film all-solid-state lithium-ion batteries in microelectronics. However, there are currently no thin-film battery products on sale in China, and no public reports on commercial applications. Therefore, exploring high-efficiency and low-cost cathode thick film preparation technology is the key to the further development and industrial application of thin-film all-solid-state lithium-ion batteries in the future. With the continuous deepening of research and the continuous emergence of new technologies, it is believed that the monomer capacity and energy density of thin-film all-solid-state lithium-ion batteries will continue to increase, and the manufacturing costs will continue to decrease. They will occupy an important role in the future secondary battery market. status. Features of thin-film all-solid-state lithium-ion batteries Thin-film all-solid-state lithium-ion batteries have a perfect electrode/electrolyte solid-solid interface, which can effectively solve the safety problems of currently commercially available lithium-ion batteries. Compared with the bulk solid-state lithium-ion battery, the advantages of discharge rate and other advantages have superior performance and have received extensive attention from the industry. Thin-film all-solid-state lithium-ion batteries can be used in more demanding environments, such as greater resistance to high and low temperatures, and good performance at low temperatures of -40°C and high temperatures of 150°C, so they can be used for high temperature detectors in the semiconductor industry And oil exploration and space exploration. The potential of the membrane electrode is uniform, and the risk of overcharge and overdischarge of the electrode is small. After years of development, thin-film all-solid-state lithium-ion batteries have shown superior safety, stability and electrochemical performance, and have become an irreplaceable micro power source for a new generation of microelectronic devices. The advantage of all-solid-state lithium-ion batteries is that the use of solid-state electrolytes helps improve the safety of lithium-ion batteries. This article can only lead you to a preliminary understanding of all-solid-state thin-film lithium-ion batteries. It will be helpful for you to get started. At the same time, you must continue to summarize so that you can improve your professional skills. You are also welcome to discuss some of the knowledge points of the article.