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What has affected the cycling performance of lithium-ion batteries? Views [0] Published: 2018-06-20 10:43:41


Every person in the lithium industry has to consider the lithium-ion battery cycle performance, and a longer cycle life means less resource consumption. So what exactly determines the performance of the lithium-ion battery cycle?


Material type: The choice of materials is the first factor that affects the performance of lithium-ion batteries. The material with poor cycle performance was selected, the process was reasonable, and the process was perfected. The cycle of the cell core must not be guaranteed; better materials were selected, and if the subsequent process was slightly problematic, the cycle performance may not be poor. Extremely outrageous (Lithium cobalt oxide plays only about 135.5mAh/g and the lithium core is evolved. Although 1C is more than 100 times diving, it is 0.5C and 500 times is more than 90%. After the first core is disassembled, the negative electrode has black graphite particles. Batteries, normal cycle performance). From the material point of view, the cycle performance of a full battery is determined by the poor one of the cycle performance of the positive electrode and the electrolyte matched, and the cycle performance of the negative electrode and the electrolyte matched. The cycle performance of the material is poor. On the one hand, the crystal structure may change too fast during cycling so that Li-lithium delithiation can no longer be completed. On the one hand, the active material and the corresponding electrolyte may not generate a dense and uniform SEI film. The premature reaction with the electrolyte causes excessive consumption of the electrolyte and further affects the cycle. In the design of the cell, if one pole confirms that the material with poor cycle performance is used, the other pole does not need to select a material with good cycle performance and waste.