The invention provides a catalyst enhanced MgAl-based hydrogen storage material, which is prepared by the following method: provide Mg and Al metal raw materials: weigh the Mg and Al metal raw materials according to a molar ratio of Mg: Al=(16-18): (11-13); perform the first vacuum melting on the Mg and Al metal raw materials; and crush the primary Mg alloy ingots to obtain the primary Mg alloy blocks; provide Ti, Zr and V metal raw materials weigh the primary Mg alloy blocks, and the Ti, Zr and V metal raw materials; perform ball milling treatment to obtain composite metal powder; press the composite metal powder into the loose alloy ingots; perform hot pressing treatment on the loose alloy ingots to obtain the dense alloy ingots, perform heat treatment on the dense alloy ingot; and wire cut the dense alloy ingots after heat treatment.

The invention provides a catalyst enhanced MgAl-based hydrogen storage material, which is prepared by the following method: provide Mg and Al metal raw materials: weigh the Mg and Al metal raw materials according to a molar ratio of Mg: Al=(16-18): (11-13); perform the first vacuum melting on the Mg and Al metal raw materials; and crush the primary Mg alloy ingots to obtain the primary Mg alloy blocks; provide Ti, Zr and V metal raw materials weigh the primary Mg alloy blocks, and the Ti, Zr and V metal raw materials; perform ball milling treatment to obtain composite metal powder; press the composite metal powder into the loose alloy ingots; perform hot pressing treatment on the loose alloy ingots to obtain the dense alloy ingots, perform heat treatment on the dense alloy ingot; and wire cut the dense alloy ingots after heat treatment.

The present invention relates to a hydrogen storage alloy, an electrode for a Ni-MH battery, a secondary battery, and a method for preparing the hydrogen storage alloy. The chemical composition of the hydrogen storage alloy is expressed by the general formula La.sub.(3.03.2)xCe.sub.xZr.sub.ySm.sub.(1-(4.114.2)x-y)Ni.sub.zCo.sub.uMn.sub.vAl.sub.w, where x, y, z, u, v, w are molar ratios, and 0.14x0.17, 0.02y0.03, 4.60z+u+v+w5.33, 0.10u0.20, 0.25v0.30, and 0.30w0.40. The atomic ratio of the metal lanthanum (La) to the metal cerium (Ce) is fixed at 3.0 to 3.2, which satisfies the requirements of the overcharge performance of the electrode material. A side elements are largely substituted by samarium (Sm) element, that is, the atomic ratio of Sm on the A side is 25.6% to 42%, so as to solve the problem of shortened cycle life caused by the small amount of cobalt (Co) atoms. The equilibrium pressure is adjusted by the change in the ratio of Sm to La and Ce to satisfy the requirements of the charge and discharge dynamic performance of the electrode material. The nucleation rate of the solidification process is improved by the addition of zirconium (Zr) to the A side at an atomic ratio of 2% to 3%. The Ni-MH battery negative-electrode material obtained from the hydrogen storage alloy has high overcharge resistance, and good high-rate discharge performance and cycle stability.

An integrated energy storage device, including: an electrolyser for generating hydrogen through electrolysis of water; a metal hydride store fluidly coupled to the electrolyser, for receiving and converting the hydrogen from a gaseous form to solid state metal hydrides and back to hydrogen when required, and one or more fuel cells coupled to the metal hydride store, for generating electricity from hydrogen generated from the metal hydride store.

To provide a rare earth magnet ensuring excellent magnetic anisotropy while reducing the amount of Nd, etc., and a manufacturing method thereof.

A rare earth magnet comprising a crystal grain having an overall composition of (R2.sub.(1-x)R1.sub.x).sub.yFe.sub.100-y-w-z-vCo.sub.wB.sub.zTM.sub.v (wherein R2 is at least one of Nd, Pr, Dy and Tb, R1 is an alloy of at least one or two or more of Ce, La, Gd, Y and Sc, TM is at least one of Ga, Al, Cu, Au, Ag, Zn, In and Mn, 0<x<1, y=12 to 20, z=5.6 to 6.5, w=0 to 8, and v=0 to 2), wherein the average grain size of the crystal grain is 1,000 nm or less, the crystal grain consists of a core and an outer shell, the core has a composition of R1 that is richer than R2, and the outer shell has a composition of R2 that is richer than R1.

A hydrogen storage alloy suitable for prescribed pretreatment, that is, pretreatment wherein mechanical pulverization is performed after pulverizing a hydrogen storage alloy and absorbing/desorbing hydrogen is provided. The hydrogen storage alloy comprises a parent phase having a CaCu.sub.5-type, that is, an AB.sub.5-type crystal structure, wherein the A site is constituted from a rare earth element containing La; and the B site does not contain Co and contains at least Ni, Al, and Mn, with the ratio (Mn/Al) of the content of Mn (molar ratio) to the content of Al (molar ratio) being 0.60 or more and less than 1.56, and the ratio (La/(Mn+Al)) of the content of La (molar ratio) to the total content of the content of Al (molar ratio) and the content of Mn (molar ratio) being more than 0.92.

To provide a rare earth magnet ensuring excellent magnetic anisotropy while reducing the amount of Nd, etc., and a manufacturing method thereof. A rare earth magnet comprising a crystal grain having an overall composition of (R2.sub.(1-x)R1.sub.x).sub.yFe.sub.100-y-w-z-vCo.sub.wB.sub.zTM.sub.v (wherein R2 is at least one of Nd, Pr, Dy and Tb, R1 is an alloy of at least one or two or more of Ce, La, Gd, Y and Sc, TM is at least one of Ga, Al, Cu, Au, Ag, Zn, In and Mn, 0<x<1, y=12 to 20, z=5.6 to 6.5, w=0 to 8, and v=0 to 2), wherein the average grain size of the crystal grain is 1,000 nm or less, the crystal grain consists of a core and an outer shell, the core has a composition of R1 that is richer than R2, and the outer shell has a composition of R2 that is richer than R1.

A method for preparing a rare earth anisotropic bonded magnetic powder, comprises the following steps: (1) preparing raw powder with RTBH as the main component, wherein, R is Nd or Pr/Nd, and T is a transition metal containing Fe; (2) adding La hydride or Ce hydride and copper powder to the raw powder to form a mixture; (3) subjecting the mixture to atmosphere diffusion heat treatment to give the rare earth anisotropic bonded magnetic powder.

A caster assembly configured to process and store a material includes a reaction chamber, a storage assembly configured to store material processed in the reaction chamber, and a blower configured to process and store the material. The reaction chamber includes a vessel configured to hold the material in a melted state prior to processing and a powder generating assembly configured to receive the material from the melting vessel. The powder generating assembly includes a feeding chamber and a feeding device disposed at least partially within the feeding chamber. The feeding device includes at least one nozzle configured to inject inert fluid, where the fluid is a gas, liquid, or combination of the two into the feeding chamber and a material inlet through which the material is configured to flow into the feeding chamber to be exposed to the inert fluid, where the fluid is a gas, liquid, or combination of the two.

A caster assembly configured to process and store a material includes a reaction chamber, a storage assembly configured to store material processed in the reaction chamber, and a blower configured to process and store the material. The reaction chamber includes a vessel configured to hold the material in a melted state prior to processing and a powder generating assembly configured to receive the material from the melting vessel. The powder generating assembly includes a feeding chamber and a feeding device disposed at least partially within the feeding chamber. The feeding device includes at least one nozzle configured to inject inert fluid, where the fluid is a gas, liquid, or combination of the two into the feeding chamber and a material inlet through which the material is configured to flow into the feeding chamber to be exposed to the inert fluid, where the fluid is a gas, liquid, or combination of the two.