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Analysis of the maturity and characteristics of thin-film all-solid-state 2025 button cell battery technology
The progress of human society is inseparable from the efforts of all walks of life in society, and the replacement of various electronic products is inseparable from the efforts of our designers. In fact, many people do not understand the composition of electronic products, such as all-solid-state thin-film lithium-ion batteries.
Using solid electrolytes instead of organic liquid electrolytes to prepare all-solid-state lithium-ion batteries is a fundamental way to solve the current safety problems of lithium-ion batteries. Thin-film all-solid-state lithium-ion batteries are a new type of lithium-ion battery developed on the basis of traditional lithium-ion batteries.
Research progress of all-solid-state thin-film lithium-ion batteries
The key materials of thin-film lithium-ion batteries include positive electrode membranes, electrolyte membranes and negative electrode membranes. In thin-film all-solid-state lithium-ion batteries, electrolytes play a vital role and directly affect the charge and discharge rate, cycle life, self-discharge, safety and high and low temperature performance of thin-film batteries. Therefore, solid electrolyte membranes are 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 research and development and industrialization of thin-film all-solid-state lithium-ion batteries have been accelerating, and the corresponding application market has also 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 all-solid-state thin-film lithium-ion batteries with metallic lithium 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 constructing three-dimensional positive electrode materials has always restricted the research and development of three-dimensional solid-state thin-film batteries.
Solid-state lithium-ion batteries can prepare flexible batteries and thin-film batteries, and are applied faster 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 intelligent medical devices, wireless sensors and other applications have huge potential markets. The technical maturity of thin-film all-solid-state lithium-ion batteries in my country is still far behind that of the international level. The specific manifestations are:
① my country started late in the research and development of key material systems for thin-film all-solid-state lithium-ion batteries, and lacked systematic research on the large-scale preparation of thin-film batteries, the design and manufacture of battery packs, battery sealing and protective layers, packaging technology, failure mechanisms, and performance evaluation standards;
② Compared with international companies such as Applied Materials and Afac in the United States and Japan, my country lacks relevant R&D experience in hardware such as vacuum coating equipment required for the preparation of thin-film batteries and necessary raw materials such as sputtering targets. There is 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 microelectronic devices. However, there are currently no thin-film battery products on sale in China, and there are no public commercial application reports. .
Therefore, exploring efficient 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 cost will continue to decrease. They will occupy an important position in the future secondary battery market.
Characteristics 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 available lithium-ion batteries. Discharge rate and other advantages, compared with block solid-state lithium-ion batteries, the performance is superior and has received widespread attention in the industry. Thin-film all-solid-state lithium-ion batteries can be used in more demanding environments, such as stronger high and low temperature resistance, and perform well at low temperatures of -40°C and high temperatures of 150°C, so they can be used in 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 overcharging and over-discharging 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 the new generation of microelectronic devices. The advantage of all-solid-state lithium-ion batteries is that the use of solid-state electrolytes helps to improve the safety of lithium-ion batteries.
This article can only lead you to have a preliminary understanding of all-solid-state thin-film lithium-ion batteries, which will be of some help to everyone's entry. At the same time, we must continue to summarize, so as to improve professional skills, and welcome everyone to discuss some knowledge points of the article.
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