Nominal Voltage 2.3V Lithium Titanate Battery With High Safety Stability

1.Summarize

Lithium titanate battery is a lithium ion secondary battery composed of lithium ion battery negative electrode material - lithium titanate, and lithium manganese oxide, ternary material or lithium iron phosphate and other positive electrode materials. Due to the high safety, high stability, long life and green environmental protection characteristics of lithium titanate. When the lithium titanate battery is charged and discharged, the intercalation and deintercalation of lithium ions will not cause changes in the crystal structure of the lithium titanate, so it has little effect on the structure of the lithium titanate material. For this reason, lithium titanate is also known as a "zero strain material". Compared with the current lithium iron phosphate battery that "slow charge can be used for up to 5 years and fast charge can be used for up to 2 years", lithium titanate batteries have outstanding advantages. It is foreseeable that lithium titanate materials will become the anode materials of new-generation lithium-ion batteries in 2-3 years and are widely used in new energy vehicles, electric motorcycles and require high safety, high stability and long cycle applications.

2.Working principle

When the battery is discharged, Li* is deintercalated from the lithium titanate spinel structure material, enters the electrolyte, passes through the separator, migrates to the surface of the ternary lithium crystal through the electrolyte, and then re-inserts into the ternary lithium material. At the same time, the electrons flow to the aluminum foil electrode of the negative electrode through the conductor, and flow to the aluminum foil electrode of the positive electrode of the battery through the tab, the negative pole of the battery, the load, the positive pole and the positive pole, and then flow to the positive electrode of the ternary lithium through the conductor. , to bring the charge into equilibrium.
It can be seen that the basic principle of the lithium titanate battery is that in the process of charging and discharging, the corresponding lithium ions are inserted and removed back and forth between the positive and negative electrodes to complete the charging and discharging of the battery and supply power to the load. When the battery is charged, the positive electrode loses electrons, and the lithium ions are extracted and embedded in the negative electrode; the negative electrode inserts lithium ions and simultaneously obtains electrons to become a rich state. The process during discharge is just the opposite. In the reaction process of Li* intercalation or deintercalation, lithium titanate (Li4 Ti5 O12) is an ideal intercalation electrode material, and Li* insertion and deintercalation have little effect on the material structure, so it is called "zero" strain" material, thus ensuring its good cycle performance.

3.Performance feature of Ultracapacitor

• High energy density
• No memory effects
• Low self-discharge rate
• Quick charge and discharge
• Extremely long cycle life
• Wide operating temperature range: -40°C--60°C
• Safe and stable green environmental protection