| 摘要 |
A method of recycling a deteriorated nickel-hydrogen battery. Concentrated sulfuric acid containing at least one of Ni ions, Co ions and La ions is poured into the deteriorated nickel-hydrogen battery and the interior thereof is cleaned with the concentrated sulfuric acid. The state of the interior of the battery is maintained at a temperature of 60 +/- 10 DEG C, and an electric current is supplied in such a direction as to charge the nickel-hydrogen battery. Then, the interior of the nickel-hydrogen battery is cleaned and filled with an alkali electrolyte containing a reducing agent. Consequently, gamma -NiOOH changes to beta -NiOOH to restore the capacity of a positive electrode, and Mm(OH)3, Al(OH)3, Mn(OH)2 and Co(OH)2 dissolve in concentrated sulfuric acid to activate the surface of a negative electrode. In addition, the hydrophilic property of the separator is restored. |
