According to the experimental results, the capacity attenuation of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC fe-removing silicon electrode is closely related to the volume expansion of silicon particles. The main effects of the attenuation of silicon electrode include: (1) The volume change will lead to particle cracking and crushing, which will lead to the loss of active materials or the deterioration of electron transmission performance; (2) The active lithium is lost due to the continuous formation of SEI film on the fresh surface of continuously exposed particles;
(3) The increase and thickening of SEI film will also cause the increase of electrode impedance and polarization, and change the electron and PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC transfer characteristics of the interface layer. (4) The volume expansion of the electrode and the continuous formation of SEI film will also lead to the change of the porosity of the electrode, which will affect the transport of electrons and ions.
Therefore, the strategies to improve the cycling performance of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC are as follows: (1) material structure modification, such as reducing the size of silicon particles, or synthesizing nano-structured silicon electrodes; (2) Potential control to avoid the formation of crystalline Li-Si alloys; (3) To develop self-healing adhesives for better bonding between active materials; (4) Use silicon oxides that have less specific volume expansion than crystalline silicon at lithium ion embedding/ejection.
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