NOVELTY - Secondary lithium ion battery (120) comprises a carbon based negative electrode (122), a positive electrode (124) comprising metal containing compound (I), a separator (126) between the electrodes, and an electrolyte comprising lithium ions. Oxygen (5 mole%) is replaced with a fluorine dopant. The positive electrode has a specific capacity of at least 200 mAh/g cycled against lithium from 4.6 V to 2 V at a rate of C/10 at room temperature. The battery has a room temperature direct current resistance of less than 80 ohms-cm2 at 20% states of charge (SOC) based on a full charge to 4.35 V.    USE - The secondary lithium ion battery such as a pouch battery (claimed) is useful for vehicle applications, preferably hybrid vehicles and electric vehicles.    ADVANTAGE - The secondary lithium ion battery exhibits high energy capacity, low internal impedance, and excellent long cycling capability, and is able to charge and recharge for many cycles without a great loss of performance.    DETAILED DESCRIPTION - Secondary lithium ion battery (120) comprises a carbon based negative electrode (122), a positive electrode (124) comprising metal containing compound of formula (Li1+bNi( alpha )Mn( beta )Co( gamma )A( delta )O2), a separator (126) between the negative electrode and the positive electrode, and an electrolyte comprising lithium ions. Oxygen (5 mole%) is replaced with a fluorine dopant. The positive electrode has a specific capacity of at least 200 mAh/g cycled against lithium from 4.6 V to 2 V at a rate of C/10 at room temperature based on the weight of the positive electrode active material. The battery has a room temperature direct current (DC) resistance of less than 80 ohms-cm2 at 20% states of charge (SOC) based on a full charge to 4.35 V.    A = metal different from Li, Ni, Mn or Co;    b = 0.05-0.125;    alpha = 0.225-0.35;    beta = 0.35-0.45;    gamma = 0.15-0.3; and    delta = 0-0.05.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic perspective view of a pouch cell battery with inner electrodes.    Battery (120)    Negative electrode (122)    Positive electrode (124)    Separator (126)    Current collectors (128, 130)    Laminated film casing. (132)