| 摘要 |
<p>Method of fabricating a titanium and silver complex-impregnated cellulosic separator for electrochemical cells involves impregnating a sheet of regenerated cellulose at elevated temperature in an aqueous environment sequentially with two different selected reagents. By the impregnations silver and titanium are separately introduced into the cellulose to improve the oxidation resistance of the cellulose when the cellulose is used as a separator in an electrochemical cell. In one embodiment, the cellulose is impregnated with aqueous silver nitrate solution at about 70-80 DEG C for about 30-60 minutes until the silver content of the cellulose reaches a level of about 1-2 weigth %. The silverized cellophane is then impregnated with an aqueous solution of titanium sulfur oxide at about the same temperature and for about the same length of time. In another ambodiment, the titaniumcontaining reagent is first utilized and thereafter the silverizing reagent. After the impregnations the sheet which has been silverized and titanized is washed with water and dried. The sheet exhibits improved resistance to penetration of silver when incorporated into an electrochemical cell having silver as one of the electrodes, zinc as the other electrode and an alkali hydroxide as the electrolyte.</p> |
