| 摘要 |
1,113,557. Fuel cells. ALLIS-CHAMBERS MANUFACTURING CO. 26 Oct., 1966 [5 Nov., 1965], No. 48062/66. Heading H1B. A silver catalyzed fuel cell electrode is prepared by immersing a porous substrate (e.g. sintered nickel) into a solution of an alkali metal citrate containing silver ions and having a pH sufficient to retain silver citrate in solution. removing the substrate after it has absorbed solution, drying it to deposit silver citrate on the pore surfaces, and immersing it in a solution of hydrazine or an alkyl substituted hydrazine to reduce the silver citrate to metallic silver. The solution may be one obtained by adding sodium citrate to a solution of silver nitrate together with sufficient nitric acid to dissolve precipitated silver citrate. The solution also may contain hydrogen peroxide and a wetting agent.
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