Abstract: A solid electrolyte comprising: LiBH4; and an alkali metal compound represented by the following formula (1): MX??(1) (in the formula (1), M represents an alkali metal atom, and X represents one selected from the group consisting of halogen atoms, NR2 groups (each R represents a hydrogen atom or an alkyl group) and N2R groups (R represents a hydrogen atom or an alkyl group)).

Abstract: An electrode alloy powder includes a hydrogen storage alloy and magnetic material clusters. The hydrogen storage alloy contains 20 to 70 wt % of Ni. The magnetic material clusters contain metal nickel, and have an average cluster size of 8 to 10 nm. A method for producing the electrode alloy powder includes an activation step of allowing a raw material powder including a hydrogen storage alloy to be in contact with an aqueous solution containing A wt % of sodium hydroxide and held at 100° C. or greater for B minutes. A and B satisfy 2410?A×B?2800.

Abstract: A solid electrolyte comprising: LiBH4; and an alkali metal compound represented by the following formula (1): MX??(1) (in the formula (1), M represents an alkali metal atom, and X represents one selected from the group consisting of halogen atoms, NR2 groups (each R represents a hydrogen atom or an alkyl group) and N2R groups (R represents a hydrogen atom or an alkyl group)).

Abstract: An electrode alloy powder includes a hydrogen storage alloy and magnetic material clusters. The hydrogen storage alloy contains 20 to 70 wt % of Ni. The magnetic material clusters contain metal nickel, and have an average cluster size of 8 to 10 nm. A method for producing the electrode alloy powder includes an activation step of allowing a raw material powder including a hydrogen storage alloy to be in contact with an aqueous solution containing A wt % of sodium hydroxide and held at 100° C. or greater for B minutes. A and B satisfy 2410?A×B?2800.

Abstract: A hydrogen occlusive alloy has a cubic structure and a composition represented by the following general formula (1): (Mg1-XLX)(Ni1-Y-ZMYLiZ)m??(1) where the element L is at least one element selected from the group consisting of Na, Cs, Ca, Sr, Ba, Sc, Ti, Zr, Hf, V, Nb, Ta, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, the element M is at least one element selected from the group consisting of Cr, Mo, W, Mn, Fe, Co, Pd, Pt, Cu, Ag, Zn, Cd, B, Al, Ga, In, Si, Ge, Sn, Pb, Sb and Bi, and mole ratios X, Y, Z and m are 0<X?0.5, 0<Y?0.5, 0.1?Z?0.9, and 1.8?m?2.2, respectively.

Abstract: A hydrogen occlusive alloy has a cubic structure and a composition represented by the following general formula (1): (Mg1-XLX)(Ni1-Y-ZMYLiZ)m ??(1) where the element L is at least one element selected from the group consisting of Na, Cs, Ca, Sr, Ba, Sc, Ti, Zr, Hf, V, Nb, Ta, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, the element M is at least one element selected from the group consisting of Cr, Mo, W, Mn, Fe, Co, Pd, Pt, Cu, Ag, Zn, Cd, B, Al, Ga, In, Si, Ge, Sn, Pb, Sb and Bi, and mole ratios X, Y, Z and m are 0<X?0.5, 0<Y?0.5, 0.1?Z?0.9, and 1.8-?m?2.2, respectively.

Abstract: The present invention provides a complex hydride (such as LiBH4 or LiNH2) of a lightweight metal thin film having a low melting point, and to a method for manufacturing the same, and the present invention relates to a method for manufacturing a thin film of a complex hydride having a nano structure, by vapor deposition, using as raw materials one or more metals selected from among lightweight metals having a low melting point (such as Li, Na, Mg, K, and Ca) and one or more elements selected from among nitrogen, carbon, boron, and aluminum, and to a light element complex hydride thin film, and with the method of the present invention, it is possible conveniently to form a thin film of a complex hydride of a lightweight metal having a low melting point, and a complex hydride thin film thus formed is useful, for example, as a multi-functional material having superconductivity, optical characteristics, hydrogen storage characteristics, and the like.