A cathode for the electrochemical synthesis of sodium chlorate in am electrolyte solution, said cathode being very stable in the electrolytic solution used for the synthesis and nonreactive toward the decomposition of hypochlorite, wherein said cathode is made at least in part of an alloy of formula:
- Ti.sub.30+x Ru.sub.15+y Fe.sub.25+z O.sub.30+t M.sub.u
- wherein:
- M represent at least one metal selected from the group consisting of chromium, manganese, vanadium, tungsten, antimony, platinum and lead,
- x is an integer ranging between -30 and +50;
- y is an integer ranging between -10 and +35;
- z is an integer ranging between -25 and +70;
- t is an integer ranging between -28 and +10;
- and
- u is an integer ranging between 0 and +50;
- in which x, y, z, t and u being selected so that:
- x+y+z+t+u=0.