| 摘要 |
PURPOSE:To increase the surface area of an electrode contributing to electrolysis and to make elecrtolysis efficient in the singleelectrode electrolytic cell separated into two electrode chambers by a diaphragm by using a fibrous carbon connected to a current collector as the electrode. CONSTITUTION:The single-electrode electrolytic cell main body 1 is separated into the cathode chamber 19 and the anode chamber 20 by a diaphragm 18 such as an ion-exchange membrane. The fluffy fibrous carbon cathode 22 connected to the current collector 21 such as a carbon sheet is filled into the cathode chamber 19 to close the space between the collector 21 and the diaphragm 18 in the chamber 19, and the anode 23 made of lead dioxide, etc., is provided in the anode chamber 20. The exhausted soln. 25 is circulated between a tank 24 and the cathode chamber 19, an anolyte 29 is circulated between a tank 28 and the anode chamber 20, then a current is applied to the electrolytic cell, hence the metal ion in the exhausted soln. 25 is electdeposited on the cathode 22, and a gas corresponding to the anolyte 29 is generated in the anode chamber 20. At this time, the exhausted soln. 25 is brought into sufficient contact with the fibrous cathode 22, almost the entire surface of the cathode 22 functions as an electrode, hence the current density is reduced, and electrolysis is advantageously carried out. |
