Explain the advantages of lithium titanate battery

1. Good safety and stability Once the traditional carbon electrode is overcharged after lithium insertion, the surface of the electrode simply precipitates metallic lithium, which reacts with the electrolyte and generates flammable gas, which brings safety hazards. The potential of lithium titanate is higher than that of pure metal lithium, and it is not easy to generate lithium crystal branches, the discharge voltage is stable, and the safety function of the lithium battery is improved. A third-party organization once tested lithium titanate batteries and found that under harsh tests such as acupuncture, squeeze, and short circuit, they did not emit smoke, fire, or explode, and their safety was much higher than other lithium batteries. Therefore, many people in the industry believe that lithium titanate is very suitable for use in military industry and other fields that require extremely high battery stability. The safety and stability function of an electric car is the most important indicator for customers. No matter how long the battery life is, if the safety problem cannot be solved, the customer is only driving a car with an untimely bomb, and the ultra-safe function of the lithium titanate battery will undoubtedly be Will be loved by customers. 2. Excellent fast charge function Compared with carbon anode materials, lithium titanate has a higher lithium ion diffusion coefficient and can be charged and discharged at a high rate. Together with greatly shortening the charging time, the impact on the cycle life is small, and the thermal stability is also strong. According to the test, the lithium titanate battery developed by the latest technology can overflow within a very short time, which is a qualitative leap from traditional batteries. Too long charging time has always been an obstacle that is difficult to overcome in the development of electric cars. Generally, slow-charging pure electric buses are used, and the charging time is at least 4 hours, and the charging time of many pure electric passenger cars is as long as 8 hours. Fast charging of electric vehicles is the future trend, and customers do not want to waste too much time waiting for charging. 3. Cycle life The long battery cycle life determines the cost-effectiveness of the entire new energy vehicle, and is the primary point of competition for new energy vehicles after they depart from the subsidy policy in the future. The extension of the cycle life of car batteries makes it affordable and affordable for customers. Other traditional lithium batteries, such as lithium iron phosphate batteries, will exhibit significant capacity degradation and shortened lifespan during use, which not only affects the normal use of users, but also increases the cost of battery replacement. This kind of unsafe application experience may discourage customers from electric cars, and then it is not conducive to the sustainable development of the new energy car industry. Lithium titanate batteries solve these problems well. When a lithium titanate battery is charged and discharged, the insertion and deintercalation of lithium ions will not change the crystal structure of lithium titanate, so it has almost no effect on the structure of lithium titanate materials. Because of this, lithium titanate is also called zero-strain material. Compared with the lithium iron phosphate battery that was used for slow charging for up to 5 years and fast charging for up to 2 years, the advantages of lithium titanate batteries are very prominent. According to experimental data, the average battery cycle life is 3000 times, while the complete charge and discharge cycles of lithium titanate batteries can reach more than 30,000 times. After being used as a power lithium ion battery for 10 years, it may still be used as energy storage. The battery will be used for another 20 years. This also means that the lithium titanate battery can achieve the same life cycle as the vehicle, and the user does not need to replace the battery in practice and use, and it hardly adds later costs. 4. Good function of wide temperature resistance The spinel structure of lithium titanate battery has a three-dimensional lithium ion diffusion channel, so the performance of lithium titanate battery in high and low temperature function is also very excellent. Generally, electric cars will have problems when charging and discharging at minus 10°C. Lithium titanate batteries have good wide temperature resistance and strong durability. They can be charged and discharged normally at minus 50°C to minus 60°C, regardless of whether they are frozen in ice. In the northern country, it is still in the hot south, and the vehicle will not affect the work due to battery shock, eliminating the user's worries. These advantages of lithium titanate battery can greatly save the cost of charging station construction and personnel allocation, etc., and are more suitable for promotion and application in the field of public transportation, and the public transportation system is the main battlefield for the promotion and application of new energy buses in my country. The feedback from the bus mall with the highest proportion of promoting the use of new energy vehicles at present shows that the fast charging method is more suitable for the practical needs of the bus mall at that time. A bus company in Handan, Hebei Province has been operating a new energy bus using lithium titanate batteries for more than two years. The experience of the relevant person in charge is: a car can be filled with fast charging in 6-10 minutes, and the driver can take a break between shifts. It can be charged. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis on the capacity of 18650 lithium battery