NOVELTY - A composition comprises active material particles (A), active material particles (B), a dispersing agent, a binder and a solvent. The active material particles are secondary particles obtained by covering surface of primary particles of lithium-metal phosphate composite particles formed by covering primary particles without passing through a crushing process with an electroconductive carbon. The average particle diameter of the covering primary particles is 50-300 nm. The average particle diameter of the secondary particles is 300 nm-5 mu m.    USE - Composition is used for forming compound-material layer of electrode of secondary battery (all claimed). Uses include but are not limited to digital camera, mobile telephone, hybrid vehicle and electric vehicle.    ADVANTAGE - The composition provides compound-material layer having excellent adhesiveness with respect to electrical power collector, and electrode with few cracks of coating film. The secondary battery obtained using composition has excellent durability and charge/discharge capacitance.    DETAILED DESCRIPTION - A composition comprises active material particles (A), active material particles (B), a dispersing agent, a binder and a solvent. The active material particles are secondary particles obtained by covering surface of primary particles of lithium-metal phosphate composite particles of formula: LiFe1-xMxPO4 (where x is 0-1 and M is manganese, cobalt, nickel or vanadium) formed by covering primary particles without passing through a crushing process with an electroconductive carbon. The average particle diameter of the covering primary particles is 50-300 nm. The average particle diameter of the secondary particles is 300 nm-5 mu m. The active material particles (B) are granulated particles obtained by covering surface of the primary particles of lithium phosphoric acid metal composite particles formed from covering primary particles with electroconductive carbon. The average particle diameter of the granulated particles is 5-30 mu m. The active material particles (B) are secondary particles obtained without crushing after baking through which covered primary particles aggregates, excluding when granulated particles are obtained by removing solvent from slurry dispersed in solvent. INDEPENDENT CLAIMS are included for the following:    (1) lithium secondary battery electrode; and    (2) secondary battery.