-Is ternary lithium battery more prone to spontaneous combustion than lithium phosphate battery?

Is ternary lithium battery more prone to spontaneous combustion than lithium phosphate battery?
author:enerbyte source:本站 click485 Release date: 2023-02-20 10:15:47
abstract:
According to the internal structure of the power lithium battery, the lithium ion battery is composed of four parts: positive material, negative material, separator and electrolyte, while the lithium iron phosphate battery uses lithium iron phosphate as the positive material. The ternary lithi...

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According to the internal structure of the power lithium battery, the lithium ion battery is composed of four parts: positive material, negative material, separator and electrolyte, while the lithium iron phosphate battery uses lithium iron phosphate as the positive material. The ternary lithium-ion battery is a lithium-ion battery with the cathode material of lithium nickel cobalt manganate. The characteristics of the ternary lithium-ion battery and the lithium iron phosphate battery are different, which focus on the energy density. Ternary lithium ion batteries have a higher energy density, while lithium iron phosphate batteries have a lower energy density, but a higher energy density will be active for internal lithium ions.

The lithium iron phosphate battery has a low energy density compared to the ternary lithium ion battery. According to the nature of the internal material of the battery, although the lithium iron phosphate battery is resistant to high temperature, although the materials of both electrodes will undergo internal decomposition when reaching a certain temperature, according to the ternary lithium battery, the battery using non-aqueous electrolyte solution is used. The chemical characteristics of lithium metal are very active when it encounters heat. At the same time, the heat-resistant temperature of the battery is basically around 200 degrees. When the temperature reaches the heat-resistant temperature, the chemical reaction of lithium ternary material will be more intense, and the electrolyte will burn rapidly under high temperature.

However, the electrode material of lithium iron phosphate has a heat-resistant temperature of 500-800 ℃, which will not release oxygen molecules like lithium ternary material, and the combustion is not so intense. The material of lithium iron phosphate will not burn in case of short circuit, and its high-temperature resistance is much better than that of ternary lithium ion battery.

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