| 摘要 |
1,154,837. Batteries. ELECTRIC STORAGE BATTERY CO. 31 March, 1966 [6 April, 1965], No. 14401/66. Heading H1B. The positive electrode comprises a principal active material 11 of argentic oxide and a secondary active material having a lower potential than the principal, the secondary active material comprising a thin layer 12 interposed between the argentic oxide layer 11 and a steel terminal 3 to form the sole electron path between the argentic oxide layer 11 and the terminal 3. The electrode may be made from a preformed layer 12 of argentous oxide interposed between a pellet of argentic oxide and the steel terminal. Alternatively the outer surface of argentic oxide layer 11 may be reduced to argentous oxide or completely to silver which is reoxidized to argentous oxide prior to insertion in terminal 3. Alternatively the steel electrode may be zinc plated and the argentous oxide layer formed in situ by reducing the surface of argentic oxide pellet to argentous oxide, the argentous oxide layer being then interposed between the argentic oxide pellet, and a layer of zinc oxide, zinc and finally the steel terminal. A zinc electrode 8 is spaced from silver electrode 11, 12 by a semi-permeable barrier or a polyelectrolyte dispersed in P.V.C. or polythene and an electrolyte absorbent layer 9 of matted cotton fibres. |
