Are ternary lithium batteries more prone to spontaneous combustion than lithium phosphate batteries?
by:Vglory 2021-03-17
According to the internal structure of power lithium-ion batteries, lithium batteries are composed of four parts: positive electrode material, negative electrode material, separator and electrolyte, while lithium iron phosphate batteries use lithium iron phosphate as the positive electrode material. The ternary lithium battery is a lithium battery that uses nickel cobalt manganese lithium ternary cathode material as the cathode material. The ternary lithium battery and the lithium iron phosphate battery have different characteristics, which are mainly concentrated in 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 large for the internal lithium ion, it will be active. The lithium iron phosphate battery has a low energy density relative to the ternary lithium battery. According to the material properties inside the battery, although the lithium iron phosphate battery is resistant to high temperatures, although the materials of these two electrodes will undergo internal analysis when reaching a certain temperature , But according to the ternary lithium material, the battery uses a non-aqueous electrolyte solution. The chemical characteristics of lithium metal after encountering heat are very active. At the same time, the heat-resistant temperature of the battery is basically around 200 degrees, and when the temperature reaches the heat-resistant temperature, the chemical reaction of the ternary lithium material will be more intense. The electrolyte burns rapidly under high temperature applications. 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 combustion is not so violent. The material of lithium iron phosphate will not burn when encountering a short circuit, and its high temperature resistance is much better than that of ternary lithium batteries. 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 is a graphene battery?
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