Title:
ELECTROLYTIC CELL FOR HALOGEN GENERATION AND METHOD THEREFOR
Document Type and Number:
Japanese Patent JPS59208087
Kind Code:
A
Abstract:
Halogen is produced by electrolyzing an aqueous halide in a specially designed cell. The cell comprises an analyte chamber and a catholyte chamber separated by a permeable membrane or diaphragm, notably an ion exchange (generally cation exchange) polymer. At least one electrode comprises at least two sections. One section comprises a gas and electrolyte permeable layer, sheet or mat having a catalytic surtace, i.e. one having a low overvoltage, (low hydrogen overvoltage if the cathode and low halogen overvoltage if the anode). This layer is spaced from themembrane by a second portion comprising an electroconductive resiliently compressible layer or mat, which is in contact with the membrane on one side thereof, the other side thereof being in contact with the main cathode. This second or spacer section advantageously has an electrode surface having a higher overvoltage than the first electrode surface. Preferably the cathode has the above construction. Upon electrolysis of alkali metal chloride or other halide in such a cell and with a cathode of the type described above, a low voltage is obtained even at high current densities and the cathode efficiency is high.
Inventors:
ORONJIO DO NORA
ANTONIO NIDORA
JIYAN NIKORA MARUTETSURI
ANTONIO NIDORA
JIYAN NIKORA MARUTETSURI
Application Number:
JP16310183A
Publication Date:
November 26, 1984
Filing Date:
September 05, 1983
Export Citation:
Assignee:
ORONZIO DE NORA IMPIANTI
International Classes:
C25B1/46; C25B9/19; (IPC1-7): C25B1/46; C25B9/00
Domestic Patent References:
| JPS5655578A | 1981-05-16 | |||
| JPS5693883A | 1981-07-29 | |||
| JPS56169782A | 1981-12-26 |
Attorney, Agent or Firm:
Kyozo Yuasa