NOVELTY - A nonaqueous lithium electrochemical cell (10) has a negative electrode (12), activated positive electrode (16) and lithium-containing nonaqueous electrolyte (14). The activated positive electrode is obtained by mixing components (a) and (b) to form a precursor material, forming an electrode from precursor material, and electrochemically activating positive electrode by applying high potential to electrode in electrochemical cell to remove lithium oxide from precursor material. The negative electrode comprises carbon, metal, semimetal, intermetallic material and/or metal oxide.    USE - Nonaqueous lithium electrochemical cell is used for nonaqueous lithium battery (claimed). Uses include but are not limited to portable telecommunication equipment, computers, medical devices, electric vehicles and hybrid-electric vehicles.    ADVANTAGE - The nonaqueous lithium electrochemical cell is economical, and has high capacity.    DETAILED DESCRIPTION - A nonaqueous lithium electrochemical cell has a negative electrode, activated positive electrode and lithium-containing nonaqueous electrolyte. The activated positive electrode is obtained by mixing components (a) and (b) to form a precursor material, forming an electrode from the precursor material, and electrochemically activating the positive electrode by applying high potential to the electrode in the electrochemical cell to remove lithium oxide from the precursor material such that lithium is electrochemically extracted from the positive electrode to load the anode. The negative electrode comprises carbon, metal, semimetal, intermetallic material and/or metal oxide. The component (a) contains metal cation and lithium oxide-containing material. The component (b) contains charged or partially-charged metal cation-containing electrode material chosen from a charged or partially charged lithium metal oxide, a charged or partially charged metal phosphate, and a charged or partially charged metal sulfate, which can accommodate lithium within their structure during the charging and discharging of the electrode when included in an electrochemical cell. At least one of components (a) and (b) does not contain manganese. INDEPENDENT CLAIMS are included for the following:    (1) activated positive electrode; and    (2) nonaqueous lithium battery.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of electrochemical cell.    Electrochemical cell (10)    Negative electrode (12)    Electrolyte (14)    Positive electrode (16)    Insulating housing (18)