Patent ID: 9634324
Date: 2017-04-25
CPC Classifications: C22C,C22F,H01M,Y02E

Claim:
1. A nickel-metal hydride battery comprising a negative electrode, the negative electrode including an La—Mg—Ni based hydrogen absorbing alloy, wherein said hydrogen absorbing alloy has a crystal phase having Gd wherein said hydrogen absorbing alloy has a layered structure of a plurality of crystal phases layered in a c-axis direction of the crystal structure; wherein the content of the crystal phase having said Gd wherein the content of the magnesium in said hydrogen absorbing alloy is 3.3% by atom or higher and 5.6% by atom or lower; and wherein the content of said calcium in said hydrogen absorbing alloy is 0.7% by atom or higher and 9.5% by atom or lower.