Title:
ELECTRODE FOR ELECTROLYSIS AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JPS5819485
Kind Code:
A
Abstract:
PURPOSE:To enhance the mechanical strength and corrosion resistance of a corrosion resistant electrode used in the manufacture of NaOH by electrolysis and to drop the overvoltage by coating the surface of the electrode with an electrode reactant having a combined structure composed of a platnum group metal and metals not belonging to the platinum group. CONSTITUTION:An electrode used in the manufacture of NaOH, gaseous Cl, etc. by electrolyzing an aqueous NaCl soln. is obtd. by forming an electrode reactant composed of the oxide of a platinum group metal such as RuO2 and compounds of metals not belonging to the platinum group such as AgCl and TiO2 on the surface of a corrosion resistant electrode substrate of Ti or the like. For example, a liq. prepared by dispersing fine AgCl powder in an org. solvent contg. an Ru compound forming RuO2 by thermal decomposition and a Ti compound is applied to a Ti electrode substrate, dried and heated to 360-600 deg.C to form an electrode reactant consisting of 20-95mol% RuO2 and 5-80mol% in total of AgCl and TiO2 in (1:10)-(3:1) molar of AgCl/TiO2 and having superior corrosion resistance, strength and catalytic function. Thus, an electrode having low overvoltage and withstanding long-term use is obtd.
Inventors:
ASAKI TOMOMI
KAMEGAYA YOUICHI
KOYANAGI NOBUYUKI
ARAI YUKIO
KIKAWA HIROYUKI
KAMEGAYA YOUICHI
KOYANAGI NOBUYUKI
ARAI YUKIO
KIKAWA HIROYUKI
Application Number:
JP11635481A
Publication Date:
February 04, 1983
Filing Date:
July 27, 1981
Export Citation:
Assignee:
ISHIFUKU METAL IND
International Classes:
C25B11/10; C25B11/08; (IPC1-7): C25B11/10
Attorney, Agent or Firm:
Yukiharu Tomita