Why is a ternary lithium battery easier to ignite spontaneously than a lithium phosphate battery?

The first reason is that the ignition point of ternary lithium batteries is lower than that of lithium phosphate batteries. The self-ignition temperature of the ternary lithium battery is 200°C, the self-ignition temperature of the lithium phosphate battery is 500-800°C, and the self-ignition temperature of the ternary lithium battery is clearly lower. Therefore, if the temperature of the battery pack increases due to an impact or other unexpected circumstances, the ternary lithium battery will spontaneously ignite faster than the lithium phosphate battery. Furthermore, a ternary lithium battery composed of four parts: positive electrode material, negative electrode material, barrier and electrolyte, will have a greater energy density than lithium phosphate batteries. Then the ternary lithium battery pack with greater energy density will become more vivid compared to lithium phosphate batteries, so if the temperature rises or encounters other conditions, it will become easier to ignite spontaneously. Although it is said that ternary lithium battery will be easier to ignite spontaneously than lithium phosphate battery, ternary lithium battery pack is small in size, light in weight, quick to charge and can be used. In addition, the current BMS system is more advanced, so ternary lithium battery is in After a long period of time, it will still be the main stream of power lithium-ion battery packs. Regarding new energy vehicles, the power lithium-ion battery is the heart of the vehicle. In terms of the use of power lithium-ion batteries, the two main technologies, ternary lithium and lithium iron phosphate, are also in the industry. The question that has always been commented on is that the safety of batteries is related to the performance of vehicles, so will the ternary lithium battery be easier to ignite spontaneously than the lithium phosphate battery? According to the internal structure of the power lithium-ion battery, the lithium battery consists of four parts: positive electrode material, negative electrode material, barrier and electrolyte, while the lithium iron phosphate battery uses lithium iron phosphate as the positive electrode material. The ternary lithium battery is a lithium battery that uses nickel cobalt manganese lithium ternary anode material as the positive electrode material. The ternary lithium battery and the lithium iron phosphate battery have different characteristics, and the main focus is on energy density. The ternary lithium battery has a greater energy density, and although the energy density of the lithium iron phosphate battery is small, the energy density is related to the internal lithium ion, it will be vivid. The lithium iron phosphate battery has a low energy density relative to the ternary lithium battery. According to the nature of the battery's internal data, although the lithium iron phosphate battery is resistant to high temperatures, although the materials of these two electrodes will undergo internal differentiation when reaching a certain temperature , But according to the ternary lithium data, the battery uses a non-aqueous electrolyte solution. The chemical characteristics of lithium metal after encountering heat are very vivid. The heat-resistant temperature of a battery is basically around 200 degrees, and when the temperature reaches the heat-resistant temperature, the chemical reaction of ternary lithium materials will become more intense. The electrolyte burns quickly under the effect of high temperature. The electrode material of lithium iron phosphate has a heat-resistant temperature of 500-800 degrees, which does not release oxygen molecules like ternary lithium materials, and the incineration is not so violent. The materials of lithium iron phosphate will not be burned when encountering a short circuit, and the high temperature resistance is much better than that of ternary lithium batteries. Compared with lead-acid batteries, lithium batteries are small in size, light in weight, quick to charge and durable, making them an excellent alternative to lead-acid batteries. After all, only a quarter-weight lithium battery of a lead-acid battery can ensure a charging speed at least twice as fast as that of a lead-acid battery, and the number of recharging cycles is twice that of it. Who wouldn't choose it. It turns out that lithium batteries were created by Edison more than 100 years ago. Why have they not been used on a large scale until recent years? Lithium batteries are very good, but they have a very fatal problem, that is, simple spontaneous combustion. Because lithium is very vivid, it can react with many substances, and it is very simple to ignite and explode. Therefore, until relatively stable metal materials are found, lithium batteries are basically unusable. 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 article: Are lithium batteries toxic and dangerous?