LAMne(Loss of Active Material – negative electrode) refers to a degradation mechanism in the process of using lithium-ion batteries, where the active material in the negative electrode gradually fails or is unable to participate in electrochemical reactions, leading to a decrease in battery capacity. LAMneₑ is one of the key paths for the battery’s **irreversible aging (irreversible degradation)**.
Engineering impact:
Reversible capacity decline: leads to reduced cycle life
Rate performance deterioration: due to contact loss, ion/electron transfer is hindered
Safety decline: if due to lithium plating, thermal stability is reduced
Increased internal resistance: affects fast charging and discharging performance
