HYDROGEN STORAGE ALLOY ELECTRODE AND NICKEL HYDROGEN SECONDARY BATTERY INCORPORATING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a hydrogen storage alloy electrode using spherical particle powders of hydrogen storage alloy and offers a hydrogen storage alloy electrode of which the nickel hydrogen secondary battery incorporating the same has a large discharging characteristics and excellent cycle life properties. SOLUTION: The hydrogen storing alloy electrode comprises hydrogen storing alloy powders carried on the current collector substrate 1. The hydrogen storing alloy powder is a spherical particle powder of the average size of 20-80 μm and the current collector substrate 1 has several openings 2 protruding from the metal sinter sheet of a thickness of 60 μm or less, and the periphery of the openings adjoining to each other is made a notched portion 3 protruding in the opposing direction each other.