Electrotechnical Institute

Storage ofNickel-Rich Layered Oxide Cathode ActiveMaterials under Humid Air with or without CO2: Effect ofH+ Intercalation and Surface Contaminants on Cycle Life

Abstract Exposure of cathode active materials (CAMs) to ambient air is particularly detrimental for Ni-rich CAMs, leading to accelerated performance degradation. Upon storage, H2O and CO2 from ambient air react with the CAM, leading to a build-up of contaminants and the formation...