| 摘要 |
PURPOSE:To increase the mechanical strength of an unformed plate, to lengthen the life of a battery, and to make it possible to fill low density paste containing a large volume of sulfuric acid by containing germanium in an active material. CONSTITUTION:A positive plate for a battery is produced by adding germanium oxide(GeO2) in paste. The positive plate is aged, then a vibration coming-off test is conducted before a formation process. The test shows that the amount of the coming off of an active material is decreased with increase in germanium oxide content. As a result, the content of germanium oxide is limited to 0.5%. If the content exceeds 0.5%, the paste is rapidly solidified and its filling is made difficult. However, increase in the content of germanium oxide shows increase in the life of a battery. Metallic germanium powder shows the same effect as germanium oxide. By adding germanium oxide in paste and increasing the amount of sulfuric acid used for kneading, the initial capacity of a battery is increased. |
