| 摘要 |
PURPOSE: To prevent accumulation of zinc on an electrode during charging by charging with a voltage less than that which is 50mV higher than the absolute value of balanced potential for zinc suspension-electrode aggregated by using a material with a large overvoltage as the material for a current conducting electrode. CONSTITUTION: An annular rotary electrode 2 made of boron carbide on the bottom of a plastic wall 1 can avoid Zn attachment by giving it a mirror surface. A fine porous diaphragm 3 between the electrode 2 and a dipole oxygen electrode 4 is arranged. The diaphragm 3 seals a shaft 7 and the shaft 7 is insulated from electrolyte. Charging is carried out at a specified voltage. A slide ring 6 removes charge from the electrode 2 by a brush 9. When a motor 8 rotates the electrode 2, electrolyte flows. The flow increases the chance of collision between suspension Zn particles and the electrode 2 surface. An particles pick up charges from the electrode by collision, zinc acid ions that are included in the liquid coating of particle surroundings change metal Zn and OH ions that generated simultaneously diffuse in solution. The generated Zn does not precipitate on the electrode 2 for a high overvoltage, but precipitates on Zn particles with collision and is stored. |
