MANUFACTURE OF ADDITIVE FOR NEGATIVE ELECTRODE PLATE OF LEAD-ACID BATTERY AND NEGATIVE ELECTRODE PLATE FOR LEAD-ACID BATTERY

摘要

PURPOSE: To provide a lead-acid battery excellent in service life performance. CONSTITUTION: In a manufacturing method of additive for a negative electrode plate of a lead acid battery, the method is provided with a process to pressurize and work powder-like lignin and a process to pulverize the pressurized and worked powder-like lignin. Therefore, the high temperature degradation of a negative electrode active material of the lead-acid battery is prevented and service life performance at a high temperature is remarkably improved.