US 12,272,819 B2 · Hydrogen storage alloy for alkaline storage battery, alkaline storage battery using the same as negative electrode, and vehicle

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

AssigneesJapan Metals & Chemicals Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Jidoshokki

InventorsTakao Sawa, Saki Notoyama, Tomoki Souma, Katsuyuki Kudo, Takuya Watanabe, Masato Hozumi, Motoyoshi Okumura, Masashi Kodama, Takuro Kikuchi, Takeo Okanishi, Atsushi Minagata, Shuhei Mochida, Hiroyuki Sasaki, Satoshi Kono

Life of this patent

Estimating the term…

Abstract

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 A2B7-type structure as a main phase and is represented by a general formula: (La1-aSma)1-bMgbNicAldCre (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.

Claims17

Dependent claims

A hydrogen storage alloy for an alkaline storage battery that is a hydrogen storage alloy used for an alkaline storage battery, wherein a main phase of the hydrogen storage alloy has a crystal structure of an A2B7-type structure, and that the hydrogen storage alloy is represented by the following general formula (1):

(La1-aSma)1-bMgbNicAldCre (1),
wherein 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.

6 more elements

Dependencies are inferred from the claim text.