| 摘要 |
1,219,781. Metal-air cells. LEESONIA CORP. 26 Jan., 1968 [8 Feb., 1967], No. 4218/68. Heading H1B. The invention is concerned with replaceable consumable metal anodes for metal-air or metal-oxygen cells which include a top portion having a terminal which automatically engages a terminal on the cathode when the electrodes are mated. According to one aspect, the cell comprises an envelope cathode consisting of a non-conductive frame 1.1, a hydrophobic polymer membrane 1.6, and a conductive, catalytic coating 1.8, on the inner surface of the membrane, the anode inside the cathode and an electrolyte in the space between the electrodes, the cathode frame having a terminal adapted to removably receive the anode terminal when the anode is placed in the cathode. According to another aspect the anode comprises a metal body and a non-conductive top of greater width than the body, the top projection including a socket or plug suitably positioned to engage a plug or socket on the cathode when the two electrodes are mated. The anode may comprise a porous zinc body wrapped in separator paper impregnated with electrolyte and a top of plastics material encapsulating the body. In the cathode the hydrophobic polymer membrane 1.6, may comprise PTFE of porosity 15-85%, pore size 0À01-100 Ám. and thickness 0À5-10 mils, supported by screen 1.7 and the catalytic coating 1.8 may be of Pt and PTFE binder. The electrolyte may be aq. KOH. Each electrode may have a terminal on both sides, 1.4a and 2.3 to provide a spare wiring system. A plurality of cells 10 separated by spacers 25 are packed up to form a battery. The spacers must allow air-access to the cathodes. The cells may be compressed between a fixed end-plate 23 and a screw-mounted end-plate 24. The bottom of the battery case is lined with foam material 22. The cells are joined in series or parallel to terminals on top of the case. |
