(19)
(11) EP 0 611 835 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.05.1995 Bulletin 1995/18

(43) Date of publication A2:
24.08.1994 Bulletin 1994/34

(21) Application number: 94830037.1

(22) Date of filing: 02.02.1994
(51) International Patent Classification (IPC)5: C25B 1/22, C25B 1/16, C25B 15/00, C25B 9/00
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 18.02.1993 JP 55234/93

(71) Applicants:
  • Permelec Electrode Ltd
    Fujisawa-shi Kanagawa (JP)
  • DE NORA PERMELEC S.P.A.
    20134 Milano (IT)

(72) Inventors:
  • Hirao, Kazuhiro
    Hadano-shi, Kanagawa (JP)
  • Nakajima, Yasuo
    Suginami-ku, Tokyo (JP)
  • Kawaguchi, Yoshiyuki
    Fujisawa-shi, Kanagawa (JP)
  • Mochizuki, Koji
    Yokohama-shi, Kanagawa (JP)

(74) Representative: Pellegri, Alberto et al
c/o Società Italiana Brevetti S.p.A. Via Puccini, 7
21100 Varese
21100 Varese (IT)


(56) References cited: : 
   
       


    (54) Electrolytic cell with gas electrodes and method for electrolysis by the same


    (57) An electrolytic cell of horizontal type constructed such that the electrolytic cell proper is divided horizontally by one or two ion exchange membranes. If one ion exchange membrane is used, the cell is divided into a cathode and an anode compartment holding a gas electrode. If two ion exchange membranes are used, the cell is divided into a cathode compartment (14), an intermediate compartment (15), and an anode compartment (16). This arrangement permits the gas electrode (23) and the current collector (22) to be in contact with each other under a uniform pressure, and also allows for smooth gas discharge. This leads to a reduction in the electrolytic potential of the cell.






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