| abstract |
Provided is a catalyst for an electrode which can exhibit sufficient performance even when containing a relatively high concentration of chlorine, is suitable for mass production, and is suitable for reduction of production cost. 1. A catalyst for an electrode having a core-shell structure comprising a carrier, a core portion formed on the carrier, and a shell portion formed to cover at least a part of the surface of the core portion, The following formulas (1) and (2) (X1 / M)? 1.2 (1) (X2 / M)? 47.0 (2) Wherein the catalyst satisfies the following conditions simultaneously. X represents a material amount (atomic number) of bromine (Br), X2 represents a chlorine (bromine atom) amount (atomic number) Cl) < / RTI > |