Japan Metals & Chemicals Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Jidoshokki

Takao Sawa

Katsuyuki Kudo

Saki Notoyama

Masashi Kodama

Tomoki Souma

Takuya Watanabe

Motoyoshi Okumura

Atsushi Minagata

Takuro Kikuchi

Masato Hozumi

Satoshi Kono

Hiroyuki Sasaki

Hiroshi Nishiyama

Makio Kon

Takeo Okanishi

Naoyoshi Terashita

Shuhei Mochida

A hydrogen storage alloy suitable for a negative electrode of an on-board alkaline storage battery, an alkaline storage battery using this hydrogen storage alloy, and a vehicle; wherein a fine-grained hydrogen storage alloy is used for an alkaline storage battery that has a crystal structure of an AB-type structure as a main phase and is represented by a general formula: (LaSm)MgNiAlCr(where suffixes a, b, c, d, and e meet the following conditions: 0≤a≤0.35, 0.15≤b≤0.30, 0.02≤d≤0.10, 0≤e≤0.10, 3.20≤c+d+e≤3.50, and 0<a+e), and an alkaline storage battery using this hydrogen storage alloy for a negative electrode. A vehicle also includes this alkaline storage battery as an electricity supply source for a motor.

Hydrogen storage alloy for alkaline storage battery, alkaline storage battery using the same as negative electrode, and vehicle

A hydrogen storage alloy suitable for a negative electrode of an alkaline storage battery is provided. The hydrogen storage alloy provided is a hydrogen storage alloy used for an alkaline storage battery that has, as a main phase, one or two crystal structures selected from an AB-type structure and an AB-type structure, and that is represented by a general formula: (LaCeSm)MgNiAlCr(where suffixes a, b, c, d, e, and f in this formula (1) meet the following conditions: 0<a≤0.15; 0≤b≤0.15; 0.17≤c≤0.32; 0.02≤e≤0.10; 0≤f≤0.05; and 2.95≤d+e+f≤3.50.

Hydrogen storage alloy for alkaline storage battery

A hydrogen storage alloy suitable for a negative electrode of an on-board alkaline storage battery, and an alkaline storage battery using the alloy, which has an AB-type crystal structure as a main phase, represented by: (SmLaR)MgTNiCoMe. (R is selected from Pr, Nd; T is selected from Ti, Zr, Hf; M is selected from V, Nb, Ta, Cr, Mo, W, Mn, Fe, Cu, Al, Si, P, B; the following conditions are met: 0<x<1.0, 0<y<1.0, 0.8≤x+y≤1.0, x+y+z=1.0; 0.93≤(x−y)·(1−a−b)+4.5(+b)≤1.62, 0<a≤0.45, 0≤b≤0.05, 0≤d≤0.7, 0≤e≤0.15, 2.85≤c+d+e≤3.15 and 0.01≤d+e).

Hydrogen storage alloy for alkaline storage battery and alkaline storage battery using the same

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Yamagata, Japan

Takao Sawa