C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 19/03 (2006.01) C22C 19/00 (2006.01) H01M 4/38 (2006.01)
Patent
CA 2318422
A hydrogen storage material which is an AB5 type hydrogen storage alloy having a CaCu5 type crystal structure represented by general formula: MmNi a Mn b Al c Co d wherein Mm denotes a misch metal, 4.0<a<=4.3, 0.25<=b<=0.4, 0.25<=c<=0.4, 0.3<=d<=0.5, and 5.05<=a+b+c+d<=5.25, or general formula: MmNi a Mn b Al c Co d X e wherein Mm denotes a misch metal, X is Cu and/or Fe, 4.0<a<=4.3, 0.25<=b<=0.4, 0.25<=c<=0.4, 0.3<=d<=0.5, 0<e<=0.1, and 5.05<=a+b+c+d+e<=5.25, characterized in that the lattice length on the c-axis is 404.9 pm or more.
La présente invention concerne un alliage de stockage d'hydrogène de type AB5 présentant une structure cristalline de type CaCu5 et qui est représenté par la formule générale MmNiaMnbAlcCod dans laquelle Mm est un métal réticulable, et où on a 4,0<a</=4,3, 0,25</=b</=0,4, 0,25</=c</=0,4, 0,3</=d</=0,5, et 5,05</=a+b+c+d</=5,25, ou par la formule générale MmNiaMnbAlcCodXe dans laquelle Mm est un métal réticulable, X est Cu et/ou Fe, et où on a 4,0<a</=4,3, 0,25 </=b</=0,4, 0,25</=c</=0,4, 0,3</=d</=0,5, 0,1<e</=0,1, et 5,05</=a+b+c+d+e</=5,25. Cet alliage est caractérisé en ce qu'il comporte une longueur de réseau selon l'axe C d'au moins 404,9 pm.
Kikugawa Shingo
Mukai Daisuke
Sakaguchi Yoshiki
Uchiyama Akira
Yasuda Kiyotaka
Borden Ladner Gervais Llp
Mitsui Mining & Smelting Company Ltd.
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