NICKEL HYDROGEN SECONDARY CELL, MANUFACTURING METHOD OF NICKEL HYDROGEN SECONDARY CELL AND MANUFACTURING METHOD OF NICKEL POROUS BODY

摘要

PROBLEM TO BE SOLVED: To prevent lowering of capacity at high-current discharge in a nickel hydrogen secondary cell. SOLUTION: A nickel porous body, positive pole substance at least including positive pole active substance arranged in each pore of the porous body, a separator impregnated with electrolyte, negative substance, and a negative pole plate are provided, of which, the positive substance is so structured as to include hollow particles 20 having notches at least partially. With this, high current can be discharged without degradation of capacity.