Patent ID: 9738952
Date: 2017-08-22
CPC Classifications: B22D,B22F,C22C,C22F,H01M,Y02E,Y02P

Claim:
1. A hydrogen storing alloy comprising an AB5-type crystal structure, having a general formula: MmNi a Mn b Al c Co d , where “Mm” represents a misch metal, “a” is more than 3.8 and less than 4.7, “b” is more than 0.1 and less than 0.6, “c” is more than 0.1 and less than 0.6, and “d” is more than 0.0 and less than 0.7, wherein the ratio, referred to as “ABx”, of the total number of moles of elements comprising the B-site to the total number of moles of elements comprising the A-site is 5.00<ABx≦5.40; the ratio of the number of moles of Co to the total number of moles of elements comprising the A-site is more than 0.0 and less than 0.7; and residual magnetization is more than 0 emu/g and 0.010 emu/g or less.