Lithium batteries experience capacity loss primarily due to microstructural changes in the materials used, particularly after approximately 100 recharge cycles. The degradation is attributed to factors such as porosity loss and sintering, which reduce the active area available for reactions. Despite the reversible nature of charging and discharging, aging processes significantly impact battery performance over time, leading to a notable decrease in capacity within two years of regular use.
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pixel01 said:Theoretically, it is a kind of reversible reactions : charged and discharged. But batteries do aging. It is because of the microstructure of the materials : The porosity is degrading, so reacting area or active area deduces over time, sintering etc..