▎ 摘　　要

NOVELTY - The material has an electrochemically active material in form of coated particles, and comprising a coating layer placed on a core. The coating layer is formed of lamellar oxide based alkali metal and a metallic element. The coating layer comprises a coating material consisting of a tunnel-like mixed oxide based on two metals, where the coated particles are microparticles or nanoparticles. The alkali metal is selected from a group consisting of lithium, sodium and potassium. Electronically conductive material is selected from a group consisting of carbon black, acetylene black, graphite, graphene, carbon fibers, carbon nanofibers, nanotube and carbon. USE - Electrode material for use in an electrochemical cell of a battery e.g. lithium battery, lithium-ion battery, sodium battery, sodium-ion battery, potassium-ion battery, magnesium battery, and magnesium-ion battery (all claimed). ADVANTAGE - The electrode material has high capacity, energy density and low production costs. The material has improved electrochemical performance, decreased capacitance, decreased voltage and increased impedance, and is safe to use. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) an electrochemical cell; and (2) a battery. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a crystal structure of a lamellar oxide of a core.