METHOD FOR SYNTHESIZING BIMETAL CATALYST PARTICLES MADE OF PLATINUM AND OF ANOTHER METAL AND USE THEREOF IN AN ELECTROCHEMICAL HYDROGEN PRODUCTION METHOD

摘要

A process for the synthesis of particles of bimetal catalyst based on platinum and on at least one second metal comprises the chemical reduction of a first platinum-based salt or complex and of at least one second salt or complex based on the second metal, the chemical reduction comprising the following stages: the preparation of a mixture comprising the first platinum-based salt or complex and the second salt or complex based on the second metal, in the presence of a pure reducing agent in the liquid form under ambient temperature and pressure conditions, the conditions being respectively defined as equal to 25° C. and 100 kPa; bringing the mixture to a temperature between approximately the freezing temperature of water and the freezing temperature of the reducing agent.