NOVELTY - Process for making a fluorinated lithiated transition metal oxide (I) comprises treating a lithiated transition metal oxide containing at least two different transition metal cations and as an impurity, at least one lithium compound comprising lithium hydroxide, lithium oxide and/or lithium carbonate, with at least one fluorine compound (II) comprising hydrogen fluoride (IIa), ammonium fluoride (IIb) or ammonium hexafluoroaluminate (IIc).    USE - The process is useful for making a fluorinated lithiated transition metal oxide, that is used in electrode for a lithium ion battery and electrochemical cell (all claimed), where the battery is used in e.g. automobiles, bicycles, aircraft or water vehicles.    ADVANTAGE - The process produces (I) that provides lithium ion battery having very good discharge, cycling behavior, and improved cycle stability and the C-rate capacity behavior with respect to capacity loss.    DETAILED DESCRIPTION - Process for making a fluorinated lithiated transition metal oxide of formula (I) comprises treating a lithiated transition metal oxide containing at least two different transition metal cations and as an impurity, at least one lithium compound comprising lithium hydroxide, lithium oxide and/or lithium carbonate, with at least one fluorine compound (II) comprising hydrogen fluoride of formula (IIa), ammonium fluoride of formula (IIb) or ammonium hexafluoroaluminate of formula (IIc).    x = 0-0.2;    a = 0.5-0.9, preferably 0.6-0.8;    b = 0-0.35, preferably 0.01-0.25;    c = 0.05-0.4, preferably 0.05-0.3;    d = 0-0.2, preferably 0-0.1;    a+b+c+d = 1; and    M = Al, Mg, Ca, V, Mo, Ti, Fe, Zn, Nb, W or Zr.    INDEPENDENT CLAIMS are also included for:    (1) fluorinated lithiated transition metal oxide (I), where the particles of (I) are covered with lithium fluoride type compound; and    (2) electrode for a lithium ion battery comprising at least one fluorinated lithiated transition metal oxide, carbon in an electrically conductive state and a binder.