| 摘要 |
The invention relates to a method for manufacturing a silver catalyst for electrochemical cells, wherein metallic silver is precipitated on a metal hydroxide gel by reduction of a silver salt. According to the invention, a silver-mercury alloy is precipitated on the metal hydroxide gel by simultaneous reduction of the silver salt and a mercury salt, the mercury content of the catalyst being between about 10 and 17% by weight, referred to the total weight, and the metal hydroxide content of the catalyst is preferably between about 1.5 and 2.0% by weight, referred to the silver. Catalysts prepared according to the method of this invention are particularly useful as catalysts for air electrodes of fuel cells having excellent long-term behavior. |
