| 摘要 |
1,102,726. Fuel cells. ENGELHARD INDUSTRIES Inc. 2 June, 1965 [10 June, 1964], No. 23606/65. Heading H1B. An acid electrolyte fuel cell using hydrocarbon fuel comprises a fuel electrode having as catalyst an alloy of rhodium and platinum, the alloy containing between 5 and 70% rhodium and the balance platinum. The alloy is prepared in powder form by melting the two metals with aluminium or silicon, cooling the alloy, and removing the aluminium or silicon with sodium hydroxide or potassium hydroxide. In the example 85% aluminium is used with 15% total of platinum and rhodium. The catalyst may be supported on a substrate, or compacted so that it is self supporting. The substrate may be "Teflon" (Registered Trade Mark), metal sheet, graphite, or an ion-exchange membrane, e.g. polystyrene sulphonic acid. A current collector of platinum gauze is pressed into contact with the catalyst by peripheral gold rings. The oxygen electrode of the fuel cell is platinum, the electrolyte sulphuric, phosphoric, or hydrochloric acid, and the fuel is a gaseous or liquid hydrocarbon, e.g. paraffins, defines, acetylenic hydrocarbons, naphthenes, or aromatic hydrocarbons. Specific examples of fuel are methane, ethane, propane, butane, a naphtha light ends C 5 -C 7 fraction, a gasoline fraction, cyclobutane, cyclopropane, ethylene, propylene, acetylene and benzene. Reference has been directed by the Comptroller to Specification 1,000,826. |
