Abstract: This invention relates to galvanic seawater cells and batteries and in particular to cathodes which are suitable for use in galvanic cells that use an oxidant dissolved in the electrolyte as depolarizer. An example of such cells are seawater cells which use the oxygen dissolved in the seawater as oxidant. The cell has an inert electrode which consists of a number of conducting fibers (1,3,14) connected to a conducting body (2,4,15). The fibers (1,3,14) have different orientations relatively to each other and to the body (2,4,15). In a preferred embodiment the electrode body (2,4) consists of two or more wires which are twisted together to constitute an electrode stem while clamping the fibers (1,3) in a fixed position between the wires, as in a laboratory bottle brush.

Abstract: Chemical reactor for reactions involving gas generation comprising feed lines, reaction chambers and outlet lines wherein the outlet lines comprise separate gas removal devices (3"'), preferable disposed at the upper edge of the reaction chamber (1) and having a negligible cross-section in relation to the passage cross-section for the reactor chambers (1).

Abstract: This invention relates to sea water cells or salt water galvanic cells or batteries which use oxygen dissolved in the sea water as the oxidant, and in particular to cathodes which are suitable for cells which are exposed to high hydrodynamic forces (from waves or strong currents). The cathode (3, 12) may consist of a helix, or spirally wound perforated or expanded metal plate or sheet. The cathode (20) may alternatively consist of a number of concentrical spaced apart layers of cylinders of a perforated or expanded metal sheet. The number of layers of the cathode is 2-50. preferably 3-20. The layers of the cathode are spaced apart with radially arranged bars, spacers, notches (4, 15, 16) or the like.