BASE MATERIAL USED FOR ELECTRODE PLATE OF LITHIUM SECONDARY BATTERY, ELECTRODE PLATE USING THE BASE MATERIAL, AND LITHIUM SECONDARY BATTERY PROVIDED WITH THE ELECTRODE PLATE

摘要

PROBLEM TO BE SOLVED: To heighten mechanical strength of base materials holding electrode plate active material, to heighten the strengths of electrodes and the rate of utilization of the active material, and to improve a battery characteristic of a lithium secondary battery. SOLUTION: Separators 5 intervene between positive electrode plates 1 and negative electrode plates 3 holding active material on both sides and in pores of porous base materials having the pores wherein active material ions such as lithium ions, etc., can move. And they are vertically rolled to form a group of plates, thus, mechanical strength of the electrode plates, the rate of utilization of the active material and a battery characteristic of the lithium secondary battery are improved.