The actual capacity of lithium cobaltate (LiCoO2) is only half of the theoretical capacity, based on the consideration of recycling. For the LITHIUM ion battery with PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC as positive material, there will be Li remaining in the positive material of LiCoO2 after normal charging (i.e. charging to the cut-off voltage of 4.2V). It can be expressed in the following simple formula: LiCoO2→0.5Li Li0.5CoO2 (normal charging ends).
If the charging voltage continues to rise, then the remaining Li in the positive PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC removal LiCoO2 material will continue to disentangle and swim to the negative electrode. At this time, the position that can accommodate Li in the negative electrode material has been filled. Li can only be precipitated on its surface as a metal. On the one hand, the surface deposits of lithium metal are very easy to gather into branchlike lithium dendrites, which puncture the diaphragm and cause direct short circuit of the positive and negative electrodes;
In addition, lithium metal is very active, will react with electrolyte directly exothermic; At the same time, the melting of lithium metal is quite low, even if the surface lithium dendrites do not puncture the diaphragm, as long as the temperature is slightly higher, such as the battery temperature caused by discharge, lithium metal will melt, thus short-circuiting the positive and negative electrodes, causing a safety accident. PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC removal can solve the above problems.
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