| 摘要 |
1,201,933. Metal-organic electrolyte-air cells- GLOBE-UNION Inc. 15 Sept., 1967 [7 Dec., 1966], No. 42157/67. Heading H1B. A primary or secondary cell comprises an anode of an alkali metal or an alkaline earth metal, a compatible organic electrolyte system and a compatible catalytic air electrode. The anode metal is preferably Li, K, Na, Ca or Mg, and the cathode an air-breathing catalytic electrode, using e.g. Pt black, Pt oxide or Raney silver catalyst. The electrolyte may be an organic solvent e.g.γ-butyrolactone, propylene carbonate, propylene-ethylene carbonate mixture, or a di-C 1-4 -alkyl nitrosamine, containing a dissolved salt, e.g. LiClO 4 , MgCl 2 , (Bu) 4 NCl, AlCl 3 , tripropylammonium hexafluoroarsenate, potassium or tetramethylammonium or phenyltrimethylammonium hexafluorophosphate or a quaternary ammonium hydroxide. Fig. 1 shows a cross-section of a cell 10 containing two cylindrical electrodes defining air duets 16, 16a; the electrodes comprise anodes 20, 20a of alkali or alkaline earth metal on a conductive grid or screen having on each side a non-conductive membrane 14 soaked with electrolyte in a space 18a, 18b surrounded by the microporous, foraminous, reticulated air cathode 12. Fig. 3 shows a vertical cross-section of a cell 21 comprising a cylinder 22 in which are contained the electrolyte and a concentric cylinder anode 28 and within that a concentric porous membrane 30; in the base is a circular air electrode 34 against which air is directed through the duct 42. Water for the cathode half-cell reaction may be supplied by bubbling the air through water at 150‹ F. In Example 1 Li on a silver screen is the anode, LiClO 4 in propylene carbonate the electrolyte and a silver air electrode the cathode. In other examples Li is replaced by Ca, Mg, K or Na, LiClO 4 by phenyltriethylammonium hexafluorophosphate, propylene carbonate by N-nitrosodimethylamine and the silver electrode by a bright platinum ore. The structures are according to Fig. 3. |
