| 摘要 |
<p>[PROBLEMS] To provide a primary battery and a secondary battery whose performance has been enhanced by means common thereto. [MEANS FOR SOLVING PROBLEMS] A thorium-containing substance capable of generating negative thorium ions in an amount of 30x10<4> or more, as measured in air, per cc is added to any member of a secondary battery or primary battery comprising at least a positive electrode, a negative electrode, an electrolyte and a separator for inter-electrode insulation. In a particular form of primary battery, negative electrode (2) of manganese dry cell (1) is composed of a mixture of manganese and a thorium-containing substance. As a result, the service life of primary battery or secondary battery can be prolonged, and further, high voltage can be generated thereby. Still further, the charging time for the secondary battery can be shortened.</p> |
