Lithium titanate power lithium-ion battery and its characteristics analysis

Lithium titanate battery is a kind of lithium titanate as the negative electrode material of lithium battery, which can be combined with lithium manganate, ternary material or lithium iron phosphate to form a lithium ion secondary battery with a rated voltage of 2.3V. Due to the high safety, high stability, long life and environmental protection characteristics of the lithium titanate material itself, the lithium titanate battery has the following characteristics: high safety. Once the traditional carbon electrode is overcharged after lithium insertion, metallic lithium is likely to precipitate on the surface of the electrode, and it will react with the electrolyte to produce flammable gas, which brings safety hazards. The potential of lithium titanate is higher than that of pure metal lithium, lithium crystal branches are not easy to appear, and the discharge voltage is stable, thus improving the safety performance of the lithium battery. Under harsh detection such as needle stick, squeeze, short circuit, etc., it will not smoke, fire, or explode, and its safety is much higher than other lithium batteries. Quick charge and discharge. Compared with carbon anode materials, lithium titanate has a higher lithium ion diffusion coefficient and can be charged and discharged at a high rate. While greatly shortening the charging time, the impact on its cycle life is small, and the thermal stability is also strong. According to the survey, the lithium titanate battery developed by the latest technology can make the battery overflow in 10 minutes or even less than 6 minutes, which is a qualitative leap from traditional batteries. Long charging time has always been an obstacle that is difficult to overcome in the development of electric vehicles. Generally, the charging time of pure electric buses using slow charging technology is at least 4 hours, and the charging time of many pure electric passenger cars is as long as 8 hours. It is foreseeable that fast charging of electric vehicles is the future trend, and consumers are unwilling to waste too much time waiting for charging. long life. When a lithium titanate battery is charged and discharged, the insertion and deintercalation of lithium ions will not cause changes in the crystal structure of lithium titanate, so it has almost no effect on the structure of the lithium titanate material. Because of this, lithium titanate is also known as a zero-strain material, and its structure is very stable. Therefore, lithium titanate batteries have a long cycle life. The cycle life of the battery determines the cost-effectiveness of the entire new energy vehicle, and is an important point of competition after the cancellation of the subsidy policy for new energy vehicles in the future. The extension of the cycle life of car batteries actually reduces the operating costs of new energy vehicles, making it more affordable for consumers. Tolerant to wide temperature. The spinel structure of the lithium titanate battery has a three-dimensional lithium ion diffusion channel, so the lithium titanate battery has excellent performance in high and low temperature performance. Generally, electric vehicles will have problems charging and discharging at minus 10°C, while 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 it is frozen in ice. In the north, or in the hot south, the vehicle will not be affected by battery shock, thus eliminating the worries of users. Compared with the current lithium iron phosphate battery with 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 full 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 can also be used as an energy storage battery. Used for 20 years. 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 are the advantages of choosing a lithium battery for UPS power supply?