JP2832221B

PURPOSE:To increase the surface of an electrode contributing to electrolysis and to make electrolysis efficient by arranging plural electrode structures each contg. a fibrous carbon cathode and an anode connected to the cathode so that both anodes are opposed to each other through an insulating part. CONSTITUTION:The electrode structure 6 in which a plate-shaped anode 4 consisting of Ti, etc., coated with lead dioxide, a noble metal oxide, and a plate-shaped cathode 5 of fibrous carbon are joined is laminated through a meshy insulator 7 except both left and right ends in a box-type electrolytic cell main body 1. Only the anode 4 is arranged on the left end in the main body 1, and a current is supplied to the anode and led to the outside of the cell from the cathode 5 at the right end through the structure 6. When a dil. metal soln. is supplied to the main body 1 from a liq. supply port 2, oxygen is generated on the anode 4 by the electrolysis of water in the soln., hydrogen is generated on the cathode 5, and the metal is deposited. In this case, since the surface area of the cathode is large and the metal is deposited on almost the entire surface, the current efficiency is increased, and the metal is continuously deposited for a long time.