The invention relates to a grid arrangement for a plate-shaped battery electrode of an electrochemical accumulator comprising a frame and a grid arranged thereon, wherein the frame comprises at least one upper frame element having a connecting lug of the battery electrode disposed on its side facing away from the grid, wherein the grid comprises grid bars respectively surrounding cutouts of the grid, wherein the majority of the grid bars surrounding the cutouts are respectively disposed in a hexagonal arrangement such that the cutout situated in between forms a hexagon, characterized by one, some or all of the following a), b), c), d), e) features): a) the grid arrangement is coated with a pasty active mass on which liquid-absorbing material designed to absorb liquid electrolyte of the accumulator is disposed, b) the size of the hexagonal cutouts increases toward the upper frame element, c) the grid bars of all the hexagonal cutouts have the same width or the same cross-sectional area, d) none of the grid bars of the hexagonal cutouts run horizontal or parallel to the upper frame element, e) none of the grid bars of the hexagonal cutouts run vertical or perpendicular to the upper frame element. The invention further relates to an accumulator.

Apparatus and techniques are described herein for providing a battery plate assembly including a silicon current collector. The silicon current collector can include apertures. A lead layer or lead alloy layer can be formed on the silicon current collector. A monopolar battery assembly can be provided, such as including monopolar battery plate assemblies comprising silicon current collectors. The silicon can include a conductive metallurgical grade silicon, such as cast and cut to provide individual current collector substrates.

Apparatus and techniques are described herein for providing a battery plate assembly including a silicon current collector. The silicon current collector can include apertures. A lead layer or lead alloy layer can be formed on the silicon current collector. A monopolar battery assembly can be provided, such as including monopolar battery plate assemblies comprising silicon current collectors. The silicon can include a conductive metallurgical grade silicon, such as cast and cut to provide individual current collector substrates.

A method for manufacturing a substrate for a lead acid battery includes manufacturing a powder mixture by mixing lead powder and carbon powder and manufacturing a substrate by compress-molding the powder mixture. 85 wt % to 95 wt % of the lead powder and 5 wt % to 15 wt % of the carbon powder are mixed, based on 100 wt % of the powder mixture.

Disclosed are electrode plates for a lead acid battery. The electrode plates are formed of an electrode plate having a face, the electrode plate comprising a lead or lead alloy grid coated with an active material and the electrode plates having a porous, non-woven mat comprised of polymer fibers coating on the face of the electrode plate, as well as a method for making the coated electrode plates and lead acid batteries containing the coated electrode plates.

An electrospun coated component for a lead acid battery is disclosed. The electrospun coated component includes positive electrode, negative electrode, and separator. The separator may comprise a low-conducting and/or non-conductive material. A method of electrospun coating these components of a LAB is provided. Suitable compositions and conditions for electrospun coating on to LAB components are further provided in this disclosure.

A method for manufacturing a substrate for a lead acid battery includes manufacturing a powder mixture by mixing lead powder and carbon powder and manufacturing a substrate by compress-molding the powder mixture. 85 wt % to 95 wt % of the lead powder and 5 wt % to 15 wt % of the carbon powder are mixed, based on 100 wt % of the powder mixture.

Disclosed are electrode plates for a lead acid battery. The electrode plates are formed of an electrode plate having a face, the electrode plate comprising a lead or lead alloy grid coated with an active material and the electrode plates having a porous, non-woven mat comprised of polymer fibers coating on the face of the electrode plate, as well as a method for making the coated electrode plates and lead acid batteries containing the coated electrode plates.

In a bipolar lead-acid storage battery including a main substrate in which cell members are individually accommodated in spaces, a positive electrode current collector plate is disposed on one surface of the main substrate, and a negative electrode current collector plate is disposed on the other surface of the main substrate, the corrosion of the thin-formed positive electrode current collector plate is prevented to extend a life of the bipolar lead-acid storage battery. A thickness (T1) of a positive electrode current collector plate disposed on one surface of a main substrate, which is a substrate disposed between adjacent cell members, ranges from 0.15 mm to 0.75 mm. A ratio (T1/T2) of the thickness (T1) of the positive electrode current collector plate relative to the thickness (T2) of a negative electrode current collector plate disposed on another face of the main substrate ranges from 1.5 to 6.5.

Infiltration of an electrolyte solution into a through hole is prevented or minimized to suppress the occurrence of a liquid junction, so that battery performance is less likely to deteriorate, and the life is prolonged. A cell member includes a positive electrode, a negative electrode, and an electrolyte layer interposed therebetween. The cell member is stacked and disposed at an interval. A space forming member includes a substrate and a frame body. A through hole penetrates between a positive electrode side and a negative electrode side in the space forming member, and a conductor inserted into the through hole electrically connects them. A liquid junction prevention member is provided in a vicinity of an opening on the positive electrode side, a vicinity of an opening on the negative electrode side, or both.