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4. Use materials with smaller thickness rebound: After cycling of lithium-ion batteries, there will be a certain rebound in thickness; When designing, reserve the rebound thickness after cycling; When materials with smaller thickness rebound are used, the reserved space for the omitted thickness rebound can be transferred to the design thickness of the cell, thereby increasing the design capacity of the cell.
5. Choosing a material system with better matching performance: Combining materials with poor matching performance not only reduces the cycling performance of lithium-ion batteries, but may also affect the rate performance and even the utilization of positive and negative electrodes; Similarly, when the material matching is better, performance such as performance, cycling, and expansion rate may all be improved.
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