| 摘要 |
<P>PROBLEM TO BE SOLVED: To prolong the lifetime of a lead acid storage battery which uses a paste type negative electrode plate that is manufactured by filling a paste-like negative electrode active material into a current collector made of lead-calcium alloy. <P>SOLUTION: Fiber of synthetic resin having a hollow structure is immersed into a saturated water solution of lignin and dried, and a hollow synthetic resin fiber impregnated with lignin is manufactured. Dilute sulfuric acid and a proper quantity of water are added into a mixture of lead powder made mainly of lead monoxide, lignin powder, the hollow synthetic resin fiber impregnated with lignin, barium sulfate powder, and cut fiber, and by kneading, a paste-like active material is formed. The paste-like active material for negative electrode formed is filled in a current collector made of lead-calcium alloy, and matured and dried, thereby a paste type negative electrode plate of no-formation is manufactured. By combining the paste type negative electrode plate manufactured and a paste type positive electrode plate used conventionally, a lead acid storage battery is manufactured. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
