| 简介 |
PROBLEM TO BE SOLVED : To provide an alkaline storage battery with high-temperature cycle life and high-temperature storage characteristics by making an assist output compatible with a regeneration output even in case of one with an opposed area of a cathode and an anode made increased. SOLUTION : With the alkaline storage battery, a ratio Y/X of a surface area Y (cm2) of a hydrogen storage alloy anode 10 to a nominal battery capacity X (Ah) is not less than 120 cm2/Ah (Y/X=120 cm2/Ah), and at the same time, the hydrogen storage alloy has a crystal structure of its alloy main phase of Ce2Ni7, and contains at least rare earth elements, nickel, magnesium, and aluminum, with stored hydrogen equilibrium pressure (Pa) of 0.02 MPa or more and 0.15 MPa or less when a hydrogen storage volume (H/M (an atomic ratio)) of the hydrogen storage alloy at 40°C is 0.5, and a hysteresis (Ln(Pa/Pd)) to release hydrogen equilibrium pressure (Pd) of 0.05 MPa or more and 0.15 MPa or less. COPYRIGHT : (C)2008, JPO&INPIT |
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