The Role of AlF₃ Coatings in Improving Electrochemical Cycling of Li‐Enriched Nickel‐Manganese Oxide Electrodes for Li‐Ion Batteries

Abstract

A Li[Li(0.19)Ni(0.16)Co(0.08)Mn(0.57)]O(2) cathode was coated with AlF(3) on the surface. The AlF(3)-coating enhanced the overall electrochemical characteristics of the electrode while overcoming the typical shortcomings of lithium-enriched cathodes. This improvement was attributed to the transformation of the initial electrode layer to a spinel phase, induced by the Li chemical leaching effect of the AlF(3) coating layer.