TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Parameter: The crystal orientations of the c-axes of at least 60% of the primary particles of the secondary particle are within 20 (preferably 10) degrees. The cross-sectional area of the voids between the primary particles of the secondary particle in a central cross-section of the secondary particle is 2.5-35 (preferably 2.5-10)% of the whole cross-sectional area of the secondary particle. The mean diameter of the primary particles is 0.2-10 microns. The mean diameter of the secondary particles is 5-30 microns.Preferred Component: The secondary particles comprise primary particles, which are crystals having a layered structure.Preferred Method: The powder composition is granulated and dried using a spray drier, before the step of sintering.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Material: The secondary particles comprise Li, Ni, Mn and Co. They have a composition of formula (I).LiaNixMnyCozO2 (I)a = 1-1.2;x = 0.33-0.65;y = 0-0.65;z = 0-0.65;(x+y+z) = 1The powder composition comprises a mixture of Li, Ni, Mn and Co. The negative electrode is a lithium electrode. The electrolyte is lithium phosphorus hexafluoride (LiPF6) in a mixed solvent of ethyl carbonate and dimethyl carbonate.Preferred Composition: The ratio of Ni:Mn:Co in the starting powder composition is 1:1:1. The ratio of Li:(NiMnCo) in the starting composition is 1.02:1. The mixing ratio of the positive electrode material/carbonaceous conductive material/binder is 85:10.7:4.3 or 80:15:5 in wt.%. EXAMPLE - A positive electrode material of layered crystal structure, carbonaceous conductive material and binder were mixed at a ratio of 85:10.7:4.3 in wt.% to give a slurry, which was applied on 15 microns thick aluminum foil used as current collector, and dried at 110 degrees C. The foil was pressurized at 1.47 kbar to obtain a dry paint film.    A battery for testing was produced using the positive electrode. Results showed that the battery had rechargeable capacity at low temperature of 4.5 mAh/g at 3.5 V and 13 mAh/g at 3 V, nickel in transition metal content of 33%, positive electrode material voidage of 3.6%, and lithium secondary battery capacity retention rate of 85%.