Abstract: A battery (30) including: a cup-shaped bottom container (1) to accommodate an electrode assembly (4), the bottom container (1) comprising a base (2) and an upstanding sidewall (3) along an outer circumference of the base (2), a lid (10) including: an inner electrically conductive portion (11), an intermediate insulating portion (13) surrounding the inner electrically conductive portion (11), and a peripheral adapter portion (12, 15) forming or constituting an outer peripheral edge portion (26) of the lid (10) and fixable to the sidewall (3) of the bottom container (1) via the outer peripheral edge portion (26), wherein the peripheral adapter portion (12, 15) is sized, shaped and/or configured to bridge a gap between an outer edge (28) of the intermediate portion (13) and an inside perimeter of the sidewall (3).

Abstract: A button battery includes a first component (1) in the form of a cup-shaped container, an electrode assembly (4) inserted in the container, and a lid-shaped second component (10) fixed along its outer edge to the upper rim of the sidewall (3) of the container. Either the first or the second component comprises three portions: an electrically conductive central portion (11), an electrically conductive peripheral portion (12) and an electrically insulating intermediate portion (13) that separates and insulates the central portion from the peripheral portion.

Abstract: A button battery (1?,1?) that includes a sealing assembly, having one of the terminals (9) of the battery, an electrically insulating portion (17) and a circumferential wall portion (15). The insulating portion (17) forms a hermetic bond with the terminal (9) and with the wall portion (15). The sealing assembly is receptacle-shaped and one or more components of the battery such as the anode (8), the separator sheet (7) and the cathode (3) may be inserted in the receptacle shape prior to assembling the battery. The wall portion (15) forms a part of the second terminal and is attached to the remainder of the second terminal by a circumferential weld seam (16). The battery may be produced by inserting one or more components of the battery into the sealing assembly and attaching the wall portion (15) of the sealing assembly to the remainder (2,2?) of the second terminal.

Abstract: An electrochemical, in particular mercury-free hydrogen production cell, is free of Raney nickel and corresponds to electrochemical gas production cells using Raney nickel regarding blank gassing rate and other electrochemical characteristics. The cell includes a metal anode, electrolyte and gas diffusion electrode. The gas diffusion electrode has, as a metal-containing main component, steel alloy and/or catalytic inorganic metal compound and/or platinum or palladium powder, all free of Raney nickel. Avoiding Raney nickel provides increased industrial safety. The substitute materials have significantly fewer risks regarding transportation, fire hazard and toxicology. Necessary preventative measures therefore require substantially less outlay. The amount of nickel (if nickel-containing compound is used) is at least 2 factors lower or tends towards zero.