| 摘要 |
The battery has a hollow casing containing several cells having lead anode plates, lead oxide cathode plates and electrically nonconductive separators between them. Magnesium metal containing less than 0.010% (pref. less than 0.004%) Mn is disposed within the casing so as no to electrically connect anode and cathode. The magnesium has a surface area of 3-3,000 sq. centimeters per gram, and the mol ratio of magnesium to lead oxide is within the range of 0.10-0.20. It is preferably in the form of metal strips attached to the anode. The magnesium may be alloyed with less than 5% Na, Ca, Ba or Si or less than 6% Al. The battery will deliver its rated capacity; when activated at low temps. (below about 25 degrees C) as when dilute sulphuric acid is added. The mol ratio of magnesium metal to sulphuric acid should be in the range 0.05-0.15. |
