Porous metal sheet, battery electrode plate composed of porous metal sheet and battery having electrode plate
AssigneeKatayama Special Industries, Ltd.
InventorHirofumi Sugikawa
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Abstract
A porous metal sheet, for use in a battery electrode substrate, composed of a two-layer structure consisting of a first and second foamed metal layers or a structure having three or more layers consisting of the first and second foamed metal layer, a mesh metal layer and the like sandwiched between said first and second layer. The number of cells of the first foamed metal layer is smaller than that of the second foamed metal layer. The electrode plate is spirally wound with the second foamed metal layer located at a peripheral side and with the first foamed metal layer located at an inner peripheral side.
Claims14
A battery electrode plate comprising a porous metal sheet composed of a two-layer structure consisting of a first foamed metal layer and a second foamed metal layer adhered to the first foamed metal layer;
- wherein the number of cells of said first foamed metal layer and that of said second foamed metal layer are different from each other;
- and
- wherein the two foamed metal layers are charged with an active substance.
A porous metal sheet, for use in a battery electrode substrate, composed of a structure having three or more layers consisting of a first foamed metal layer, a second foamed metal layer and one or more metal layers sandwiched between and adhered to said first foamed metal layer and said second foamed metal layer and selected from a group consisting of a mesh metal layer, a nonwoven metal layer and a metal sheet layer having uniform pattern pores formed therethrough;
- wherein the number of cells of said first foamed metal layer and that of said second foamed metal layer are different from each other.
Dependencies are inferred from the claim text.