Development prospect of lithium titanate battery technology

What is the development prospect of lithium titanate battery technology? Lithium titanate battery technology is very leading in the field of energy storage. It has the advantages of fast charging, long life, and low temperature resistance. It is especially suitable for buses with fixed mileage or fixed routes, terminal trailers and other vehicles. Lithium titanate batteries are still not considered the mainstream of battery technology. At present, ternary lithium batteries and lithium iron phosphate batteries are widely used by automobile manufacturers.

What is a lithium titanate battery?

Lithium titanate battery is a kind of lithium titanate, which is used as the negative electrode material of lithium battery, and can be combined with positive electrode materials such as lithium manganese oxide, ternary materials or lithium iron phosphate to form a 2.4V or 1.9V lithium ion secondary battery. In addition, it can also be used as a positive electrode to form a 1.5V lithium secondary battery with a metal lithium or lithium alloy negative electrode. Lithium titanate has the characteristics of high safety, high stability, long life and environmental protection.

The composition of lithium titanate battery

• Negative electrode: lithium titanate material
• Diaphragm: Lithium battery separator with carbon as negative electrode
• Electrolyte: lithium battery electrolyte with carbon as negative electrode
• Battery shell: Lithium battery shell with carbon as negative electrode

What is the future development prospect of lithium titanate battery technology?

Although the lithium titanate battery has poor rate performance and insufficient energy density, it has the advantage of fast charging. As its price becomes more reasonable and its charging facilities become more and more perfect, lithium titanate batteries are expected to occupy an important place in the field of power batteries in the future.

Advantages and disadvantages of lithium titanate battery technology

Lithium titanate battery has small size, light weight, high energy density, good sealing performance, no leakage, no memory effect, low self-discharge rate, rapid charge and discharge, long cycle life, wide working temperature range, safe, stable and green And other characteristics, so it has a very broad application prospect in the field of communication power supply.

When the lithium titanate battery is used as the negative electrode material, the potential platform is as high as 1.55V, which is more than 1V higher than the traditional graphite negative electrode material. Although some energy density is lost, it also means that the battery is safer.

Since the lithium titanate battery can be used safely in high temperature and low temperature environments, it also shows its important advantages of wide temperature resistance (especially low temperature resistance). At present, the safe working temperature range of Yinlong lithium titanate battery is between -50 degrees and 65 degrees.

Long cycle life. Compared with the graphite material commonly used in traditional lithium-ion batteries, lithium titanate battery materials have almost no shrinkage or expansion in the skeleton structure during the process of charging and discharging lithium intercalation and delithiation. The problem of damage to the electrode structure caused by the volume strain of the unit cell when extracting/intercalating lithium ions.

The last advantage of lithium titanate battery is strong fast charging and discharging ability and high charging rate. At present, the charge rate of lithium titanate battery is 10C or even 20C, while the charge rate of ordinary graphite anode material is only 2C-4C.

Lithium titanate batteries will continue to produce gas during cycle use, which will cause the battery pack to bulge, especially at high temperatures, which will affect the contact between the positive and negative electrodes, increase the battery impedance, and affect the performance of the battery. This is also one of the main obstacles that limit the widespread application of lithium titanate as a negative electrode material in batteries.

The process of nanonization of lithium titanate battery material particles is often difficult and requires high cost, and it is currently difficult to achieve large-scale industrial production.

The above is the introduction of lithium titanate battery technology. Lithium titanate battery is used in power generation, power supply and user side by virtue of its high safety, fast response, long life and low cost. Today, a lithium titanate energy storage ecosystem with an emerging structure is clearly visible.

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