Analyze the types of ternary anode materials for lithium batteries

Types of ternary cathode materials for lithium batteries and the price trend of cathode materials. Today's society advocates energy conservation and environmental protection, and more and more environmentally friendly products are applied to the market. In the battery industry, ternary lithium batteries quickly occupy the market with many advantages and gradually replace traditional lead-acid batteries. In the current lithium battery market, the advantages of ternary lithium batteries stand out and become a dark horse in the lithium battery market. There are many ternary lithium battery parameters. The following author analyzes the types and price trends of lithium battery ternary cathode materials. Ternary cathode material for lithium batteries. Types of ternary cathode materials for JPG lithium batteries 1. Lithium titanate cathode materials: Lithium titanate, as a zero-tension material, greatly prolongs the service life of lithium batteries, and the charge-discharge cycle can reach thousands of times. For example, traditional solar street lights use lithium batteries to store electrical energy, which must be replaced every two years. However, the specific capacity of lithium titanate is only half of that of traditional materials such as natural graphite, that is, a single battery needs to use twice the mass of the negative electrode material of the traditional cathode material to achieve the same capacity. This will increase the mass and volume of the battery. Under the current background of lightweight batteries, the promotion of lithium titanate has certain limitations. 2. Natural graphite anode material: Natural graphite has good electrical conductivity, good crystallinity, and good layered structure, which is more suitable for lithium ion embedding and extrusion. In addition, it has rich mineral resources and low prices, and has become an important negative electrode material for lithium batteries. 3. Artificial graphite cathode materials: all kinds of artificial graphite have very different processing techniques. In a broad sense, all graphite materials obtained through organic carbonization and graphitization high-temperature treatment are collectively referred to as artificial graphite, such as carbon (graphite) fiber, pyrolytic carbon (graphite), foamed graphite, etc. In a narrow sense, artificial graphite usually refers to the use of raw materials with low carbon content (petroleum coke, pitch coke, etc.) as aggregates, coal tar pitch as the binder, and through ingredients, mixing, molding, carbonization (also known as roasting) and Solid block material processed by graphitization and other processes. Its structure and physical and chemical properties are similar to those of natural graphite, but when using negative electrode materials as power lithium batteries, artificial graphite has better regularity, more lithium ion storage, excellent cycle performance, but higher cost. 4. Silicon-based anode materials: silicon and lithium alloys will generate Li15Si4 at room temperature. The specific theoretical capacity is as high as 3572mah/g, which is much higher than the commercial theoretical specific capacity graphite (372mah/g). It is a rich element in the earth's crust (26.4 %, 2), low-cost, environmentally friendly, and silicon anode materials have always been praised by researchers, and they have the potential to be anode materials for next-generation lithium batteries. However, during the charging and discharging process, the volume of silicon expands severely (about 300%), the volume effect is large, and the conductivity is low, which limits the commercial application of silicon cathode technology. In order to overcome these shortcomings, many people try to use silicon-carbon composite technology, using a cushion frame to compensate for material expansion. At present, there are two important technical routes: packaging structure and nail type. 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: What is the cause of the explosion of the lithium battery of Samsung mobile phones?