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Why It is Impossible to Charge Li-ion Batteries at Low Temperatures?
2022-03-10
Most companies' battery products can be discharged normally at low temperature, but under the same temperature conditions, it is more difficult or even impossible to charge normally, when Li+ is embedded in graphite material, it needs to be solventized first, and this process will consume certain energy and prevent Li+ from dissipating into the interior of graphite; on the contrary, when Li+ comes out of graphite material into the solution, there will be a solventization process, and solventization will not consume energy and Li+ can come out of graphite quickly. On the contrary, when Li+ comes out of graphite material into the solution, there is a solventization process, and solventization does not consume energy, and Li+ can come out of graphite quickly. Therefore, the charging acceptability of graphite material is lower than the discharging acceptability.
In low temperature environment conditions, there is a certain risk of charging Li-ion battery. As the temperature decreases, the kinetic properties of graphite negative electrode will gradually deteriorate, and the electrochemical polarization of the negative electrode will significantly increase during charging, and the precipitated lithium metal will easily form lithium dendrites, which will pierce the diaphragm and cause a short circuit of the positive and negative electrodes.
As far as possible to prevent lithium-ion battery charging at low temperatures. If the battery must be charged at low temperatures, it is necessary to try to apply a low current to charge the lithium-ion battery, and after charging, the lithium-ion battery needs to be fully rested to ensure that the lithium metal precipitated from the negative electrode can react with graphite and embedded in the graphite anode again.
It is believed that with the continuous development and progress of technology, the application of lithium batteries in low-temperature environments will be further enhanced.
In low temperature environment conditions, there is a certain risk of charging Li-ion battery. As the temperature decreases, the kinetic properties of graphite negative electrode will gradually deteriorate, and the electrochemical polarization of the negative electrode will significantly increase during charging, and the precipitated lithium metal will easily form lithium dendrites, which will pierce the diaphragm and cause a short circuit of the positive and negative electrodes.
As far as possible to prevent lithium-ion battery charging at low temperatures. If the battery must be charged at low temperatures, it is necessary to try to apply a low current to charge the lithium-ion battery, and after charging, the lithium-ion battery needs to be fully rested to ensure that the lithium metal precipitated from the negative electrode can react with graphite and embedded in the graphite anode again.
It is believed that with the continuous development and progress of technology, the application of lithium batteries in low-temperature environments will be further enhanced.
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