Abstract: A battery consisting of a multiplicity of electrochemical cells, in particular fuel cells for the conversion of at least one gaseous reactant, with electrodes consisting of catalytic material in powder form and spacer screens for the support of the catalytic material, and with pressure pads to compress the entire arrangement, in which, there are provided, between the spacer screens of each two adjacent cells of such a battery, and at the battery ends, metallic contact pieces used as current collectors, each of which contains a cavity to which a pressurized medium is fed in the sense of exerting a uniform pressure on the catalyic material of the adjacent cells, with the cavities of the contact pieces of the battery advantageously connected through channels to the supply system of one of the gaseous reactants, in particular hydrogen.

Abstract: A fuel cell battery consisting of a plurality of fuel cells which are individually enclosed by plastic frames for reacting gaseous reactants and a liquid electrolyte.

Abstract: An improved fuel cell set for the generation of electrical energy through the reaction of gaseous reactants and a liquid electrolyte which is circulated.