JP2012509399A5

JP2012509399A5 -

Info

Publication number: JP2012509399A5
Application number: JP2011536727A
Authority: JP
Filing date: 2009-11-23
Publication date: 2015-04-16
Anticipated expiration: 2029-11-23

Description

ＲＥ−Ｆｅ−Ｂ水素貯蔵合金は、ＬａＮｉ_５相、並びにＬａ_３Ｎｉ_１３Ｂ_２相、（Ｆｅ、Ｎｉ）相及びＮｉ相のうちの１つ又は２つ又は３つを含めた多相構造である。組成中の元素の置換の差に起因して、他の相を含む構造が形成されていてもよい。 RE-Fe-B hydrogen storage alloys, LaNi ₅ phase, and La ₃ Ni ₁₃ B ₂ phase, (Fe, Ni) in one or two or three multi-phase structure including one of the phase and Ni phase is there. A structure including another phase may be formed due to a difference in substitution of elements in the composition.

Claims

RE-Fe-B hydrogen storage alloy having a chemical composition formula of RE ₁₇ (Fe, Ni) ₇₆ B ₇ , where RE is one of the rare earth elements La, Ce, Pr, Nd, and Sm be species or more; Fe and Ni, Mn, and may be part component substituted by the Cu; B is, Mn, Al, may be partially replaced by Si; the RE -Fe-B hydrogen storage alloy has a multi-phase structure including LaNi ₅ phase and one or two or three of La ₃ Ni ₁₃ B ₂ phase, (Fe, Ni) phase and Ni phase The above alloy.

RE-Fe-B hydrogen storage alloy having a chemical composition formula of RE ₁₅ (Fe, Ni) ₇₇ B ₈ , where RE is one of rare earth elements La, Ce, Pr, Nd, and Sm Fe and Ni may be partially substituted by Mn and Cu; B may be partially substituted by Mn, Al and Si ; the RE-Fe- The B hydrogen storage alloy is an alloy having a multi-phase structure including LaNi ₅ phase and one or two or three of La ₃ Ni ₁₃ B ₂ phase, (Fe, Ni) phase and Ni phase .

RE-Fe-B hydrogen storage alloy having a chemical composition formula of RE ₈ (Fe, Ni) ₂₇ B ₂₄ , where RE is one of the rare earth elements La, Ce, Pr, Nd, and Sm. Fe and Ni may be partially substituted by Mn and Cu; and B may be partially substituted by Mn, Al and Si.

RE-Fe-B hydrogen storage alloy having a chemical composition formula of RE ₈ (Fe, Ni) ₂₈ B ₂₄ , where RE is one of the rare earth elements La, Ce, Pr, Nd, and Sm Fe and Ni may be partially substituted by Mn and Cu; and B may be partially substituted by Mn, Al and Si.

A _{_{RE 5 (Fe, Ni) 18}} RE-Fe-B hydrogen storage alloy having a chemical composition formula of _{B 18,} wherein, RE is 1 is La, the Ce, Pr, Nd, and Sm rare earth element Fe and Ni may be partially substituted by Mn and Cu; and B may be partially substituted by Mn, Al and Si.

A _{RE 2 (Fe, Ni) RE} -Fe-B hydrogen storage alloy having a _{B 3} chemical composition formula, wherein, RE is, La is a rare earth element, Ce, Pr, Nd, and one of the Sm Or Fe and Ni may be partially substituted with Mn and Cu; B is the alloy as described above which may be partially substituted with Mn, Al and Si.

Use of a RE-Fe-B hydrogen storage alloy according to any one of claims 1 to 6 for the preparation of negative electrode materials for batteries or for hydrogen storage materials that occlude / desorb hydrogen gas. .