An electrode plate for a cell manufactured by applying a mixture composed exclusively of an active material (2) in a filled state to a core member (1) having a projection array (8) of first and second rectangular curved projections (4, 7) alternately projecting in up and down directions of a metallic sheet (3) and arranged in one direction (X) of the metallic sheet and in a direction (Y) perpendicular to the X direction through flat portions (9) of predetermined width. The electrode plate is fabricated by a forming process such as a reciprocating method using a continuous press, rotary method, or electroprecipitation.