LAMpe (Loss of Active Material – positive electrode) refers to the phenomenon where the positive electrode material of a lithium-ion battery loses its ability to participate in electrochemical reactions due to mechanisms such as structural damage, surface reactions, and dissolution during the cycling or storage process, leading to the decline of battery performance. LAMpe is one of the important aging pathways affecting battery life and safety, commonly found in high-energy-density batteries (such as NMC, NCA systems).
Engineering impact:
Irreversible capacity loss
Reduced rate performance (due to blockage of electronic/ionic pathways)
Shortened cycle life
Increased risk of lithium plating (metal migration may induce lithium deposition at the negative electrode)
