NOVELTY - An electrode manufacturing method involves preparing (S11) a platinum elution suppression material by mixing compound having alkyl sulfonic acid group, and solvent. Then, catalyst powder having catalyst particles on its surface is mixed with the platinum elution suppression material to obtain a slurry (S12). A platinum elution suppression layer containing a polymer is formed (S13) on a surface of the catalyst powder by polymerizing suppression material in the slurry, by performing vacuum drying process and stoving process, and suppression layer-coated catalyst electrode is obtained (S14) .    USE - Method for manufacturing electrode for fuel cells (claimed) e.g. polyelectrolyte fuel cells.    ADVANTAGE - The method enables economical manufacture of the electrode having stable electric power generation characteristics for a long period of time. The method enables suppressing the particle size increase and drop-off of the catalyst particles by preventing dissolution of metal catalyst particles under strong acidic conditions.    DETAILED DESCRIPTION - An electrode manufacturing method involves preparing a platinum elution suppression material by mixing compound having alkyl sulfonic acid group of formula: ((R1O)3Si-) in a molecule, and a solvent. Then, catalyst powder having catalyst particles on its surface is mixed with the platinum elution suppression material to obtain a slurry. A platinum elution suppression layer containing a polymer of the suppression material is formed on a surface of the catalyst powder by polymerizing suppression material in the slurry, by performing vacuum drying process and stoving process, and suppression layer-coated catalyst electrode is obtained.    R1=H or 1-4C alkyl.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating a method for manufacturing an electrode. '(Drawing includes non-English language text)'    Platinum elution suppression material preparing step (S11)    Slurry preparing step (S12)    Platinum elution suppression layer forming step (S13)    Suppression layer-coated catalyst electrode obtaining step. (S14)