Development status of lithium titanate battery technology at home and abroad

The development of lithium titanate battery technology at home and abroad Since the industrialization of lithium batteries in 1991, the negative data of batteries in the world has always been graphite. Abstract Since the end of the 1990s, lithium titanate has been considered as the negative electrode material for new lithium batteries due to its excellent performance. For example, the crystal structure of lithium titanate can maintain high stability during the process of lithium ion inlay and deintercalation, and the lattice constant does not change much. This zero-strain electrode data greatly extends the cycle life of lithium titanate batteries. Lithium titanate has the characteristics of a three-dimensional lithium ion dispersion channel with a spinel structure, and has good power characteristics and high and low temperature functions. Compared with the carbon anode data, lithium titanate has a higher potential (1.55v higher than that of lithium metal), which leads to the widespread presence of solid and liquid layers on the surface of the electrolyte, while the carbon anode is basically not formed on the surface of lithium titanate. More importantly, in normal battery voltage planning, it is difficult to form lithium dendrites on the surface of lithium titanate. This largely eliminates the possibility of battery short circuit caused by lithium dendrites. Therefore, among the various lithium batteries I have seen, the lithium battery with lithium titanate as the negative electrode has the highest safety. Most people in the industry have heard of the cycle of lithium batteries, that is, lithium titanate replaces graphite as a positive electrode material, which can last tens of thousands of times, far longer than typical lithium batteries. Because most lithium professionals have never really started manufacturing lithium titanate batteries, or just a few times they encountered difficulties and ended up getting nothing. Therefore, they did not spend a little time thinking about why most traditional lithium batteries can make perfect batteries, but they can only last 1,000 to 2,000 cycles. Graphite anode, a basic component of traditional lithium batteries, is difficult to withstand high loads. Is this the root cause of the short cycle life of the battery? Once the graphite anode is replaced by spinel lithium titanate anode, the same lithium battery chemistry can be cycled. Thousands or even hundreds of thousands of times. Others, when many people talk about the low energy density of lithium titanate batteries with great interest, they ignore a simple but important fact, that is, lithium titanate batteries have extremely long cycle life, excellent safety, and excellent Power characteristics and excellent economy. These characteristics will become important pillars of the large-scale planning of the lithium energy storage industry that is currently emerging. In the past 10 years, research on lithium titanate battery technology at home and abroad has been in full swing. Its industrial chain can be divided into lithium titanate data preparation, lithium titanate battery processing, and lithium titanate battery system integration and its application in electric vehicles and energy storage malls. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How to classify lithium batteries?