| 摘要 |
A hydrogen-absorbing alloy containing elements easily reacting with hydrogen, such as elements of Groups 1A, 2A, 3A, 4A, 5A, etc., as its constituent element, and having a quasi-crystal phase as at least a part of its constituent phases. The quasi-crystal phase includes elements of axial rotation symmetry such as five-fold axis of symmetry, eight-fold axis of symmetry, 10-fold axis of symmetry, 12-fold axis of symmetry, etc.. The hydrogen-absorbing alloy containing the quasi-crystal phase has excellent corrosion resistance, can effectively prevent pulverizing, and further provides excellent absorption/discharge amount of hydrogen in a practical application range. An alkaline secondary cell contains elements reacting easily with hydrogen as its constituent elements, and includes a negative electrode containing the hydrogen-absorbing alloy at least a part of the constituent phase of which is a quasi-crystal phase, a positive electrode of an Ni type, for example, and a separator separating the positive electrode from the negative electrode. This alkaline secondary cell provides both long service life and high capacity. <IMAGE> |
