▎ 摘　　要

NOVELTY - A mixture comprises particles of one or more materials (A) capable of reversibly intercalating and de-intercalating lithium ions and composite particles (B) in which each particle contains a basic structure containing electron conducting carbon and coating containing one or more metal oxides which is not capable for reversibly intercalating and de-intercalating lithium ions and deposited on a surface region of basis structure. USE - Mixture used for forming cathode for electrochemical cell e.g. all solid-state battery (all claimed) used in automobiles, bicycles, aircraft, boat and ship. Uses include but are not limited to computer, personal digital assistant, mobile telephone, watch, camcorders, digital camera, thermometer, battery-driven screwdrivers, calculator, communication equipment or remote car locks, energy storage device for power plants, etc. ADVANTAGE - The mixture produces electrochemical cell having reduced capacity loss during charging/discharging cycle of cell. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of the mixture; (2) cathode, which comprises the mixture; (3) electrochemical cell, which comprises the cathode; and (4) use of composite particles as electron-conducting additive for the cathode.