US 12,435,397 B2
AB2 type-based hydrogen storage alloys, methods of preparation and uses thereof
Tai Sun, Laupen (CH); and Noris Gallandat, Schwarzsee (CH)
Assigned to GRZ TECHNOLOGIES SA, Avenches (CH)
Appl. No. 18/681,104
Filed by GRZ TECHNOLOGIES SA, Avenches (CH)
PCT Filed Aug. 2, 2022, PCT No. PCT/EP2022/071620
§ 371(c)(1), (2) Date Feb. 5, 2024,
PCT Pub. No. WO2023/012135, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 21189513 (EP), filed on Aug. 3, 2021.
Prior Publication US 2024/0263284 A1, Aug. 8, 2024
Int. Cl. C22C 30/02 (2006.01); B22F 1/05 (2022.01); B22F 1/068 (2022.01); B22F 9/08 (2006.01); C01B 3/00 (2006.01); C22C 1/02 (2006.01)
CPC C22C 30/02 (2013.01) [B22F 1/05 (2022.01); B22F 1/068 (2022.01); B22F 9/08 (2013.01); C01B 3/0057 (2013.01); C22C 1/02 (2013.01); B22F 2304/15 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); C22C 2202/04 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A hydrogen storage alloy consisting of single-phase alloy with an AB2 type crystal structure, wherein its A site consists of Ti and Zr, and its B site contains Cr, Mn, Fe, Ni and R elements, represented by the general Formula (I)
TixZryCraMnbFecNidCueVfRg   (I)
in which x, y, a, b, c and d are molar ratios; R is selected from La and Ce; 0.2≤x≤0.95; 0.05≤y≤0.45; 0.001≤a≤1; 0.3≤b≤2; 0.01≤c≤0.6; 0.005≤d≤1.5; 0≤e≤0.1; 0≤f≤0.5; 0.01≤g≤0.05; (a+b+c+d+e+f+g)/(x+y)=1.9−2.35.