| abstract |
(57) [Problem] To provide a nickel-hydrogen secondary battery including a thin-film nickel positive electrode and a negative electrode having a high energy density. SOLUTION: By using a thin-film positive electrode, a negative electrode and a film separator, the capacity density of the electrode plate can be improved, and at the same time, the capacity of the nickel-hydrogen secondary battery can be easily increased. A nickel-hydrogen secondary battery is obtained. |