How safe are Yinlong lithium-ion titanate batteries?

With a bang, a cylindrical lithium-ion battery was slammed onto the floor via a lifted mechanical arm. The floor was pitted, but the battery was undamaged. Afterwards, after electric drill cutting, steel needle puncture and other tests, no abnormal phenomena such as fire or explosion occurred in the battery, and the small light bulb powered by it could still light up normally. This scene is the news screen of the recent CCTV second program 'Economy Half an Hour' reporting the technological breakthrough of new energy batteries. It shows the lithium titanate battery independently developed by Yinlong New Energy with high safety performance. The advantages of safety performance are prominent. The anode materials of ordinary lithium batteries are mainly concentrated in several categories such as carbon materials and alloy materials. Although carbon materials have the advantages of a wide range of sources, simple synthesis process, non-toxic and harmless, etc., the potential of the carbon electrode is close to that of metallic lithium, and the potential for metallic lithium is 0.2V. When the battery is overcharged, it is easy to precipitate metal on the surface of the carbon electrode. Lithium forms lithium dendrites, which pierce the diaphragm and cause a short circuit, which brings great safety risks. If alloy materials are used as alternative materials for the negative electrode, the volume is likely to change significantly during the charge and discharge process, and it is also easy to penetrate the diaphragm and cause a short circuit. Safety has always been the advantage of lithium titanate. The disadvantage of carbon materials and alloy materials as negative electrodes is precisely the advantage of lithium titanate. Compared with other lithium batteries, the lithium titanate material hardly forms an SEI film with poor thermal stability, which avoids the risk of battery fire due to overheating. The potential of lithium titanate material to metal lithium is 1.55V, and the potential to lithium metal is higher. Even in the later stage of charging, low temperature or high rate charging, the potential of this negative electrode will not reach the level of lithium ion reduction to metal lithium Potential, to avoid the formation of lithium dendrites when the battery is overcharged, and the safety is better. Director Meng of the Technical Equipment Department of Shijiazhuang Public Transport Company said: “Safety is our biggest concern. The advantage of lithium titanate is the high safety of the battery. The Yinlong lithium titanate bus currently operated by Shijiazhuang Public Transport has not been found to smoke or catch fire. 'I am driving the first batch of Yinlong lithium titanate power battery buses purchased in Beijing, and there have been no battery safety incidents. They are indeed safer and more environmentally friendly than fuel vehicles.' Beijing bus driver Liu Shifu Say. According to the latest data, the number of Yinlong vehicles loaded with Yinlong lithium titanate batteries put on the market is zero due to battery-induced safety. Escort for public travel In recent years, with the national call for energy conservation and emission reduction, the market demand for new energy vehicles has surged, followed by news that power batteries burst into flames and explosions. The safety of power batteries has become a hot topic of public concern. . In May of this year, the Ministry of Industry and Information Technology of the People's Republic of China issued three mandatory standards, 'Safety Requirements for Electric VehiclesHigh-safety lithium titanate batteries have naturally become the market's choice. In addition to high safety, Yinlong lithium titanate also has excellent characteristics such as fast charging and discharging, wide temperature resistance, and long life. Lithium titanate has a three-dimensional lithium ion transmission channel, which has an ion conductivity several hundred times higher than that of graphite, and can be quickly charged within 6 to 15 minutes; lithium titanate has a stable structure and does not form a solid-liquid interface passivation film on the surface. The kinetic properties at low temperature can still maintain the state at room temperature, and it can still be charged and discharged normally at -50℃ to 60℃. Lithium titanate with a cycle life of 30,000 cycles can be used as a power battery in the field of energy storage after the 10-year life of a new energy vehicle ends. The Science and Technology Daily published the article 'Reconstructing Lithium Titanate Ion Battery 'How Fast, Better and Saved' to Store the FutureThe traditional lithium battery has become one of the most promising energy storage batteries.' Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous article: Don’t starve to death for electric car batteries. change!