ELECTRODE COMPRISING POROUS 3D CURRENT COLLECTOR WITH IMPROVED UTILIZATION RATE OF ELECTRODE ACTIVE MATERIAL, CYCLE LIFETIME AND HIGH RATE CHARGE/DISCHARGE CHARACTERISTICS, LITHIUM BATTERY USING THE ELECTRODE AND PREPARATION METHOD THEREOF

摘要

PURPOSE: An electrode for a lithium battery, its preparation method and a lithium secondary battery containing the electrode are provided, to improve conductivity, to allow the distribution of potential on electrode surface to be maintained to be constant and to prevent the separation of an electrode active material by allowing an electrode active material to be distributed uniformly in the pores of a porous 3D current collector. CONSTITUTION: The electrode comprises 70-95 wt% of a mixture of an electrode active material(1), a binder and a conductor charged uniformly in the pores of a porous 3D current collector(2). Preferably the porous 3D current collector is a foamed metal, a metal fiber, a porous metal, an etched metal or a both-sides uneven metal, and is made of a material selected from the group consisting of Ni, Cu, SUS, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi and Sb.