Analyze the composition and structure of lithium titanate batteries

Analyzed the composition and structure of lithium titanate batteries. The principle of lithium titanate batteries. Lithium titanate batteries consist of a positive electrode, a negative electrode plate (the positive electrode active material is ternary lithium, the negative electrode lithium titanate), electrolyte, tabs, and stainless steel (aluminum alloy). Shell composition. The positive and negative plates are areas of electrochemical reaction. The gap and the electrolyte supply the lithium ion transmission channel and serve as the electrode ear to guide current. When the battery is charged, lithium ions migrate from ternary lithium ions to crystals, and then emerge from the positive plate. Under the use of electric field force, it enters the electrolyte, passes through the barrier, and then migrates to the surface of the negative lithium titanate crystal through the electrolyte, and then inserts the negative lithium titanate spinel structure. At the same time, electrons flow through the positive aluminum foil, tabs, battery poles, load, negative column, negative tabs flow to the negative aluminum foil electrode, and then through the conductor flow through the negative electrode lithium titanate, so the charge is balanced. When the battery is discharged, lithium ions are taken out of the lithium titanate spinel structure, enter the electrolyte, pass through the barrier, and then migrate through the electrolyte to the appearance of the ternary lithium crystal, and then be embedded in the ternary lithium from the beginning. At the same time, the electrons flow through the aluminum foil electrode negative electrode of the conductor, through the electrode ear, the battery negative pole, the load, the positive pole and the aluminum foil electrode positive electrode of the positive ear of the battery, and then through the ternary lithium positive conductor, so that the cost reaches a balance. It can be seen that the basic principle of lithium titanate battery is that in the process of charging and discharging, the corresponding lithium ions are inserted back and forth between the positive electrode and the negative electrode to complete the charging and discharging of the battery and the power supply to the load. The charging and discharging diagram of the lithium titanate battery is shown in the figure. Analyze the composition and structure of lithium titanate batteries. When the battery is charged, the positive electrode loses electrons, and lithium ions come out and are embedded in the negative electrode. The cathode is embedded in lithium ions, leaving the electrons in a lithium-rich state. The discharge process is reversed. Lithium titanate (Li4TI5O12) is the ideal buried electrode data in the Li+ embedding or de-embedding response process. Li+ insertion and de-embedding have little effect on the data structure, so it is called zero-strain data, thus ensuring its good circulation function. Lithium titanate has two different phase molecular structures: Li7TI5O12 and Li4TI5O12. The crystal structure of Li7TI5O12 and the crystal structure of Li4Ti5O12 are both spinel structures, with little change in lattice constant and little change in volume. It can prevent the damage caused by the expansion of the structure of the electrode during the charge and discharge cycle data, and improve the cycle function and the service life of the electrode, reduce the attenuation of the capacity and the increase in the number of cycles, so that the lithium titanate has a good cycle function . Lithium titanate battery electrochemical reaction equation: analysis of the composition and structure of lithium titanate battery. The total chemical reaction equation: analysis of the composition and structure of lithium titanate battery. The structure of lithium titanate battery. Positive electrode: lithium iron phosphate, lithium manganate or three Metadata, lithium nickel manganate. Negative electrode: lithium titanate data. Gap: The gap of a lithium battery with carbon as the negative electrode. Electrolyte: Lithium battery electrolyte with carbon as the negative electrode. Battery box: Lithium battery box with carbon as the negative electrode. 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: 18650 Lithium Battery Charging Principle