Sintered bipolar battery plates
AssigneeWestinghouse Electric Corp.
InventorsGeorge D. Leap, Hilary Moyes
Life of this patent
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Abstract
A sintered bipolar battery plate (10) is made containing two porous electrodes and a central, non-porous, metallic cell separator-current collector sheet (12) where the positive electrode contains sintered particles (14) of elemental silver sintered into an expanded metal sheet (18) and the negative electrode contains sintered particles (16) of elemental iron sintered into an expanded metal sheet (18), where the positive and negative electrodes are sintered to a thin, porous, metallic connection layer (20) selected from at least one of nickel fiber or nickel powder, which is sintered to the current collector (12). This plate (10) can be placed in a case (22) containing alkali hydroxide electrolyte and having metal end plates (29) for electrical connections.
Claims8
A sintered bipolar battery plate comprising a porous positive electrode and a porous negative electrode, with a central, non-porous current collector having planar dimensions greater than the electrodes, where the central current collector is between the positive electrode and the negative electrode, wherein the positive electrode contains sintered particles of elemental silver sintered into an expanded metal sheet selected from the group consisting of nickel and silver, the negative electrode contains sintered particles of elemental iron sintered into an expanded nickel sheet, the current collector is solid nickel sheet, and the positive and negative electrodes are each sintered to thin, porous, metallic connection layers selected from the group consisting of nickel fiber, nickel powder and mixtures thereof, which layers are sintered to the current collector on opposite sides, providing an all sintered construction.
A bipolar battery comprising a case within which are disposed alkali hydroxide electrolyte, at least one sintered bipolar battery plate containing a porous positive electrode, and a porous negative electrode, with a central, non-porous current collector having planar dimensions greater than the electrodes, where the central current collector is between the positive electrode and the negative electrode, and a separator system between bipolar battery plates, the bipolar battery plate characterized in that the positive electrode contains sintered particles of elemental silver sintered into an expanded metal sheet selected from the group consisting of nickel and silver, the negative electrode contains sintered particles of elemental iron sintered into an expanded nickel sheet, the current collector is solid nickel sheet, and the positive and negative electrodes are each sintered to thin, porous, metallic connection layers selected from the group consisting of nickel fiber, nickel powder and mixtures thereof, which layers are sintered to the current collector on opposite sides, providing an all sintered construction.
Dependencies are inferred from the claim text.